Artigos 2018

Site-selective photoinduced cleavage and profiling of DNA by chiral semiconductor nanoparticles Abstract: Gene editing is an important genetic engineering technique that enables gene manipulation at the molecular level. It mainly relies on engineered nucleases of biological origin, […]

Laser/Electron Irradiation on Indium Phosphide (InP) Semiconductor: Promising Pathways to In Situ Formation of Indium Nanoparticles Abstract: In the current study, whether femtosecond laser and electron beam irradiation of indium phosphide (InP) are “green,” fast, and […]

ZnWO4 nanocrystals: synthesis, morphology, photoluminescence and photocatalytic properties Abstract: The present joint experimental and theoretical work provides in-depth understanding on the morphology and structural, electronic, and optical properties of ZnWO4nanocrystals. Monoclinic ZnWO4 nanocrystals were prepared at three different […]

Yolk-shelled ZnCo2O4 microspheres: Surface properties and gas sensing application Abstract: The need to improve the sensitivity, selectivity and stability of ozone gas sensors capable of monitoring the environment to prevent hazard to humans has sparked research […]

Thermosensitive poly(N-vinylcaprolactam) as a transmission light regulator in smart windows Abstract: Upcoming generation of smart windows requires simple design, fast stimulus response and cost-effective production. Aiming these features, we reported a new approach of switchable devices […]

Towards the scale-up of the formation of nanoparticles on alpha-Ag2WO4 with bactericidal properties by femtosecond laser irradiation Abstract: In recent years, complex nanocomposites formed by Ag nanoparticles coupled to an alpha-Ag2WO4 semiconductor network have emerged as […]

Systematic evaluation of amorphous silica production from rice husk ashes Abstract: Amorphous silica (SiO2) was extracted from the rice husk ashes (RHAs) of the agulhinha and cateto varieties. Optimized time, temperature, extractor concentration, and reaction time […]

Sodium trimetaphosphate and hexametaphosphate impregnated with silver nanoparticles: characteristics and antimicrobial efficacy Abstract: This study aimed to synthesize and characterize materials containing silver nanoparticles (AgNP) with polyphosphates (sodium trimetaphosphate (TMP) or sodium hexametaphosphate (HMP), and evaluate […]

Surfactant-Mediated Morphology and Photocatalytic Activity of alpha-Ag2WO4 Material Abstract: In the present work, the morphology (hexagonal rod-like vs cuboid-like) of an alpha-Ag2WO4 solid-state material is manipulated by a simple controlled-precipitation method, with and without the presence […]

Role of crystallinity on the optical properties of Na2V6O16 center dot 3H(2)O nanowires Abstract:  It is known that optical properties depend on crystalline structures, feature that can significantly affect materials such as vanadates, since their lamellar […]

Photoelectrocatalytic reduction of nitrobenzene on Bi-doped CuGaS2 films Abstract: Nitrobenzene, a toxic nitroaromatic, a feedstock compound to the production of many commercially relevant chemicals were photoelectrocatalytically reduced into aniline on a photoelectrode comprised by a bismuth-doped […]

The methanol and CO electro-oxidation onto Pt-pc/Co/Pt metallic multilayer nanostructured electrodes: An experimental and theoretical approach Abstract: We developed Pt-pc/Co/Pt nanostructured metallic multilayers (MM) electrodes for methanol and carbon monoxide electro-oxidation. This material uses as an […]

Magnetism and multiferroic properties at MnTiO3 surfaces: A DFT study Abstract: The present study illustrates how density functional theory calculations can rationalize the surface structure and magnetism for the low-index (1 1 0), (1 0 1), (1 0 0), (0 0 1), (1 1 1), and […]

Investigation of the Fe-Mo electrodeposition from sorbitol alkaline bath and characterization of the films produced Abstract: The electrodeposition of Fe-Mo alloys from an alkaline solution containing sorbitol as the complexing agent for Fe(III) ions was studied. XRD […]

Electrochemical biosensor made with tyrosinase immobilized in a matrix of nanodiamonds and potato starch for detecting phenolic compounds Abstract: The envisaged ubiquitous sensing and biosensing for varied applications has motivated materials development toward low cost, biocompatible […]

The effect of TiO2 nanotube morphological engineering and ZnS quantum dots on the water splitting reaction: A theoretical and experimental study Abstract: Ordered arrays of TiO2 nanotubes with smooth and rippled morphologies were prepared by one-step titanium oxidation in […]

Dielectric and Magnetic Properties of NixPb1-xTiO3 Solid Solution and Composite: Coexistence of Ferroelectric and Antiferromagnetic Order Abstract: A complete serie of NixPb1-xTiO3 samples were synthesized by solid state reaction and their structural, vibrational, dielectric and magnetic properties were […]

Contrasting transient photocurrent characteristics for thin films of vacuum-doped “grey” TiO2 and “grey” Nb2O5 Abstract:  Photo-catalytic performance for oxide films, here for inkjet-printed TiO2 (ca. 1 mu m thickness on PTO) and for spray-pyrolysis-coated Nb2O5 (ca. […]

Theoretical Insights into 1D Transition-Metal Nanoalloys Grown on the NiAl(110) Surface Abstract: Metallic nanoalloys are essential because of the synergistic effects rather than the merely additive effects of the metal components. Nanoscience is currently able […]

Packing Defects in Fatty Amine Self-Assembled Monolayers on Mica as Revealed from AFM Techniques Abstract: Self-assembled monolayers of n-octadecylamine (ODA-SAMs) on mica have been prepared and studied by contact and jumping mode atomic force microscopy (AFM). Adhesion and friction data show that the compactness of the monolayers spontaneously increases as they are allowed to ripen. Molecular packing can also […]

White light emission from single-phase Y2MoO6: xPr(3+) (x=1, 2, 3 and 4 mol%) phosphor Abstract:  A series of Pr3+ doped with Y2MoO6 was synthesized using the co-precipitation method and the structural, photoluminescent and morphological properties of […]

Titanium surface bio-functionalization using osteogenic peptides: Surface chemistry, biocompatibility, corrosion and tribocorrosion aspects Abstract: Ti was modified with TiO2, two different spacers, 3-(4-aminophenyl) propionic acid (APPA) or 3-mercaptopropionic acid (MPA) and dentin matrix protein 1 (DMP1) […]

A theoretical and experimental investigation of Eu-doped ZnO nanorods and its application on dye sensitized solar cells Abstract: This paper describes the electrodeposition of Europium-doped Zinc Oxide (ZnO) nanorods as well its application as photoanodes in dye sensitized solar cells(DSSCs). The incorporation of […]

Structure, morphology and photoluminescence emissions of ZnMoO4: RE (3+) = Tb3+ – Tm3+ – X Eu3+ (x=1, 1.5, 2, 2.5 and 3 mol%) particles obtained by the sonochemical method Abstract: ZnMoO4 and ZnMoO4: RE3+ 1% Tb3+, […]

Smart Fertilization Based on Sulfur-Phosphate Composites: Synergy among Materials in a Structure with Multiple Fertilization Roles Abstract: Sulfur is currently a bottleneck for agronomic productivity. Many products are based on the application of elemental sulfur (S […]

A quantum-mechanical investigation of oxygen vacancies and copper doping in the orthorhombic CaSnO3 perovskite Abstract: In this study we explore the implications of oxygen vacancy formation and of copper doping in the orthorhombic CaSnO3 perovskite, by […]

Laser-Induced Formation of Bismuth Nanoparticles Abstract: In the current communication, the synthesis of metallic Bi nanoparticles with coexisting crystallographic structures (rhombohedral, monoclinic, and cubic) obtained by direct femtosecond laser irradiation of NaBiO3, is demonstrated for […]

Tuning Electrochemical Bistability by Surface Area Blocking in the Cathodic Deposition of Copper Abstract: We report herein a precise control of the electrochemical bistability induced by surface area changes during the cathodic deposition of copper. Small […]

Synthesis and characterization of SnO2 center dot Nb catalysts supported on Maranhao clay Abstract: The development and optimization of heterogeneous catalysts is a fundamental step to ensure the technical and economic feasibility of new materials created […]

Influence of Chromium (III) Insertion on the Thermal Stability of Carbonated Magnesium and Aluminum Hydrotalcites Synthesized by the Hydroxide Coprecipitation Method Abstract: Anionic clays are structures capable of adsorbing large quantities of water and other polar […]

Synthesis of Lamellar Structures of Magnesium (II), Aluminum (III) and Iron (III) Hydroxides Interchanged with Carbonate Ion through Precipitation in pH 11 Abstract: The synthesis of layered double hydroxides has been investigated aiming innumerous applications, mainly […]

Insights into the photocatalytic performance of Bi2O2CO3/BiVO4 heterostructures prepared by one-step hydrothermal method Abstract: This paper describes the synthesis of Bi2O2CO3/BiVO4 heterostructures through a one-step method based on the difference in solubility between two semiconductors that […]

Nb-Doped TiO2 Photocatalysts Used to Reduction of CO2 to Methanol Abstract:  In pursuit of higher photoactivity, Nb-doped TiO2 powders were evaluated in the reduction of CO2. The replacement of Ti by Nb in the crystalline structure […]

Influence of pH in Obtaining Indium Tin Oxide Nanoparticles by Microwave Assisted Sovothermal Method Abstract: A systematic study about synthesis of In1-xSnxO2 (ITO) n) nno structured crystals by microwaveassistd solvothermal method is repor.ted Different solutionsinusmg In.l(3) […]

Electrical properties of calcium doped BiFeO3 films on LaNiO3 coated Pt substrates Abstract:  Pure and calcium-modified (CaxBi1-xFeO3, x = 0.0, 0.1, 0.2, 0.30) thin films were fabricated on Pt(111)/Ti/SiO2/Si substrates by the soft chemical method using […]

Conducting Behavior of Crystalline alpha-pbo(2) as Revealed by DFT Calculations Abstract: PbO2 is one material that has recently emerged as potential transparent conducting oxide for applications in the modern opto-electronic industry. In this work the electronic […]

Preparation of transparent hydrophobic polymeric films spray-deposited on substrates Abstract: This paper describes the production of transparent hydrophobic polymeric filmsmade of poly(vinyl chloride) and paraffin wax. A liquid polymeric solution was prepared and spray-deposited on silica […]

Pristine carbon nitride as active material for high-performance metal-free supercapacitors: simple, easy and cheap Abstract: Understanding the basic properties of pristine carbon nitride electrodes is of great importance for their further applications as supercapacitor materials. To […]

New Approach of the Oxidant Peroxo Method (OPM) Route to Obtain Ti(OH)(4) Nanoparticles with High Photocatalytic Activity under Visible Radiation Abstract: Environmental problems related to the generation of wastewater contaminated with organic compounds and the emissions […]

Calibration of Passive UHF RFID Tags Using Neural Networks to Measure Soil Moisture Abstract: This paper presents a system to monitor soil moisture using standard UHF RFID tags buried on the soil. An autonomous mobile […]

Aerial Manipulation with Six-Axis Force and Torque Sensor Feedback Compensation Abstract:  This paper presents a framework for aerial manipulation based on the feedback compensation of torques and forces measured by a six-axis F/T sensor, placed between […]

Residual Energy Harvesting from Light Transients Using Hematite as an Intrinsic Photocapacitor in a Symmetrical Cell Abstract: Hematite as a sustainable photoabsorber material offers a band gap close to 2 eV and photoanode characteristics, but usually […]

Structural and microstructural analyses on Sm-modified BaTiO3 obtained from the Pechini’s method Abstract: Barium titanate (BaTiO3) ceramics, prepared by the Pechini’s method, were investigated considering the influence of the samarium-modifier concentration. Nanosized crystallites in the order […]

Increased photocatalytic activity induced by TiO2/Pt/SnO2 heterostructured films Abstract:  In this work, a high photocatalytic activity was attained by intercalating a Pt layer between SnO2 and TiO2 semiconductors, which yielded a TiO2/Pt/SnO2 – type heterostructure used […]

Comparative Analysis of Photoluminescence and Upconversion Emission from Individual Carbon Nanotubes for Bioimaging Applications Abstract: Luminescent single-walled carbon nanotubes (SWCNTs) are unique nanoemitters that allow near-infrared single-molecule detection within biological tissues. Interestingly, the recent discovery of […]

Effect of surface characteristics of soft liners and tissue conditioners and saliva on the adhesion and biofilm formation Abstract: Purpose: To investigate the influence of surface characteristics and saliva on the adhesion and biofilm formation of […]

Electric field-assisted pressureless sintering of zirconia-scandia-ceria solid electrolytes Abstract: Electric field-assisted (flash) pressureless sintering experiments were carried out in ZrO2 ceramics doped with 10 mol% Sc2O3 and 1 mol% CeO2 (10Sc1CeSZ). All experiments were conducted isothermally […]

Effects of Y-TZP blank manufacturing control and addition of TiO2 nanotubes on structural reliability of dental materials Abstract: Titanium dioxide (TiO2) nanotubes have been applied to enhance the mechanical and biological properties of dental materials. Yttria-stabilized […]

Synthesis of cobalt(II)-alpha-diimines complexes and their activity as mediators in organometallic mediated radical polymerization of vinyl acetate Abstract:  This study describes the synthesis and characterization of three alpha-diimine-cobalt complexes of the type [CoCl2(R-DAB)] (R-DAB = R-N=CH-CH=N-R; […]

Photocatalytic evaluation of the magnetic core@shell system (Co,Mn) Fe2O4@TiO2 obtained by the modified Pechini method Abstract: TiO2 is a highly active photocatalyst, sometimes obtained with nanometric particle size, which improves its behavior but makes its removal […]

Some effects of the doping alpha-Al2O3 nanoparticles in the transport properties of Bi1.65Pb0.35Sr2Ca2Cu3Oy ceramic superconductors Abstract: We present a preliminary study on the effects of nano-size alpha-Al2O3 (40 nm) in the transport properties of Bi1.65Pb0.35Sr2Ca2Cu3Oy ((Bi, […]

Transcriptional Response to Lactic Acid Stress in the Hybrid Yeast Zygosaccharomyces parabailii Abstract: Lactic acid has a wide range of applications starting from its undissociated form, and its production using cell factories requires stress-tolerant microbial hosts. […]

Flexible room-temperature volatile organic compound sensors based on reduced graphene oxide-WO3 center dot 0.33H(2)O nano-needles Abstract: Flexible sensors have attracted significant attention due to their currently desirable properties and possibility to be applied to any surface […]

Ploidy Variation in Kluyveromyces marxianus Separates Dairy and Non-dairy Isolates Abstract:  Kluyveromyces marxianus is traditionally associated with fermented dairy products, but can also be isolated from diverse non-dairy environments. Because of thermotolerance, rapid growth and other […]

Hybrids membranes with potential for fuel cells – Part 3: extruded films of nanocomposites based on sepiolite and PC/sulfonated PC blends Abstract: Fuel Cells based in polymers are an alternative for the conventional energetic matrices. However, […]

Voltage relaxation and Abrikosov-Josephson vortices in Bi-2223 superconductors doped with alpha-Al2O3 nanoparticles Abstract: We have observed a change in the behaviour of voltage-relaxation curves with remnant magnetic flux, when the maximum magnetic field applied before starting […]

Microstructural and electrical transport properties of uniaxially pressed ceramic superconductors Abstract: We have studied the effect of the pelletization pressure on microstructural and electrical transport properties of superconducting ceramics with starting composition given by the formula […]

Alpha- and beta-AgVO3 polymorphs as photoluminescent materials: An example of temperature-driven synthesis Abstract: Controlling the synthesis of a given polymorph of an inorganic material is a further step in the design of property and function. In […]

FUS Phase Separation Is Modulated by a Molecular Chaperone and Methylation of Arginine Cation-pi Interactions Abstract: Reversible phase separation underpins the role of FUS in ribonucleoprotein granules and other membrane-free organelles and is, in part, driven […]

Optical Structural Analysis of Individual alpha-Synuclein Oligomers Abstract:  Small aggregates of misfolded proteins play a key role in neurodegenerative disorders. Such species have proved difficult to study due to the lack of suitable methods capable of […]

Phosphate glasses via coacervation route containing CdFe2O4 nanoparticles: structural, optical and magnetic characterization Abstract:  CdFe2O4 nanoparticles of around 3.9 nm were synthesized using the coprecipitation method and protected by a silica layer. The nanoparticles were mixed […]

Theoretical approach for determining the relation between the morphology and surface magnetism of Co3O4 Abstract: Precisely controlling the different aspects of the morphology and magnetic properties of metal oxides are fundamental to materials design. A theoretical […]

Structural and optical properties of soluble melanin analogues with enhanced photoluminescence quantum efficiency Abstract: Melanin is a functional material of growing interest for bioelectronics. Several melanin analogues have been employed in order to fully explore its […]

Electrodeposition of Fe-doped Sb2Se3 thin films for photoelectrochemical applications and study of the doping effects on their properties Abstract:  Sb2Se3 (SSe) has been highlight as a low-cost, less complex, low toxicity, and earth-abundant photovoltaic (PV) […]

The iron oxyhydroxide role in the mediation of charge transfer for water splitting using bismuth vanadate photoanodes Abstract: The water photo-oxidation to oxygen on iron oxyhydroxide (FeOOH) deposited on a surface of semiconductor materials play a […]

Genome editing in Kluyveromyces and Ogataea yeasts using a broad-host-range Cas9/gRNA co-expression plasmid Abstract: While CRISPR-Cas9-mediated genome editing has transformed yeast research, current plasmids and cassettes for Cas9 and guide-RNA expression are species specific. CRISPR tools […]

Formation of Ag nanoparticles under electron beam irradiation: Atomistic origins from first-principles calculations Abstract: The formation of Ag nanoparticles is currently a topic subject to a great deal of research because they are excellent materials with […]

Nanocrystals self-assembled in superlattices directed by the solvent-organic capping interaction (vol 5, pg 5602, 2013) Abstract: Correction for ‘Nanocrystals self-assembled in superlattices directed by the solvent–organic capping interaction’ by Cleocir José Dalmaschio et al., Nanoscale, 2013, […]

Surface free energy of enamel treated with sodium hexametaphosphate, calcium and phosphate Abstract: Objective: This study evaluated the capacity of sodium hexametaphosphate (HMP) at different concentrations to alter the surface properties of dental enamel in order […]

Ketoprofen Loaded in Natural Rubber Latex Transdermal Patch for Tendinitis Treatment Abstract: Ketoprofen is an analgesic with potent anti-inflammatory activity against acute inflammation, subacute inflammation, for the acute and long-term treatment of various inflammatory pathologies, as […]

ZnO Nanoparticles with Different Sizes and Morphologies for Medical Implant Coatings: Synthesis and Cytotoxicity Abstract: Zinc oxide (ZnO) has been used in a large range of technological applications, from light-emitting diodes (LEDs) and solar cells to […]

Characterization of PZT/PVDF Composite Film as Functional Material Abstract: !In this paper, we obtained and characterized a composite film made of lead zirconate titanate (PZT) piezoelectric ceramic and nonpolar polyvinylidene fluoride (alpha-PVDF) as a functional material. […]

Blocking effect in promising proton conductors based on Ba(3)Ca(1.18)Nb1.82-xRxO(9-delta) (R = Y3+, Gd3+, Sm3+, Nd3+) ordered perovskites for PC-SOFCs Abstract: High proton conductivity and good chemical stability are keys to development of new electrolytes for PC-SOFCs […]

Influence of ionic liquid on the photoelectrochemical properties of ZnO particles Abstract: ZnO particles synthesized by the microwave-assisted hydrothermal method were sensitized with different amounts of ionic liquid (IL) 1.3-dimethylimidazolium iodide (MMI.I). The structure of the […]

Photocurrent enhancement and magnetoresistance in indium phosphide single nanowire by zinc doping Abstract: We report the fabrication of intrinsic and Zn-doped InP single nanowire devices by the vapor-liquid-solid and photolithography techniques. Nanowires with a zincblend structure […]

Influence of the addition of phosphogypsum on some properties of ceramic tiles Abstract: Phosphogypsum (PG) is a waste from phosphoric acid production, and this work evaluates the use of PG as an additive in ceramic manufacturing. […]

Synthesis of poly(ethyl methacrylate-co-methyl methacrylate) obtained via ATRP using ruthenium benzylidene complexes Abstract: Atom-Transfer Radical Copolymerization (ATRP) of methyl methacrylate (MMA) and ethyl methacrylate (EMA) under different reaction conditions was conducted using Grubbs 1st (1) and […]

Non-isothermal decomposition kinetics of conductive polyaniline and its derivatives Abstract: The non-isothermal decomposition kinetics of conductive polyaniline (PANI) and its derivatives, poly(o-methoxyaniline) (POMA) and poly(o-ethoxyaniline) (POEA), was investigated by thermogravimetric analysis (TGA), under inert and oxidative […]

Wettability Study on Natural Rubber Surfaces for Applications as Biomembranes Abstract: This manuscript reports an experimental study on surfaces of natural rubber membranes modified by incorporation of calcium phosphate particles. In particular, we focused on the […]

Thermal and electrical properties of CaCu3Ti4O12 synthesized by soft chemistry route Abstract:  Calcium copper titanate powders were synthesized by a soft chemistry route, aiming to establish a cost-effective solution method to obtain sintered ceramics with giant […]

Electrical effective parameters of the grains and the Montgomery’s method in ceramics Abstract:  In this paper we have applied the Montgomery’s measurement method to ceramic samples, to study the behavior of the grains’ electrical effective parameters, […]

Theoretical methods for calculations of optical phonons in BiOBr: Analysis and correction of propagated errors Abstract: Theoretical and experimental methods were employed to investigate the vibrational modes of BiOBr. Wavenumber prediction and assignments of the infrared […]

Development of Co-3[Co(CN)(6)](2)/Fe3O4 Bifunctional Nanocomposite for Clinical Sensor Applications Abstract: In this study, a magnetically separable three-dimensional (3D) Co-3[Co(CN)(6)](2)/Fe3O4 nanocomposite comprising magnetic nanoparticles (NPs) adsorbed on the nanocubes of a cobalt Prussian blue analogue was prepared. […]

Development and characterization of a 3D oral mucosa model as a tool for host-pathogen interactions Abstract:  The aim of this study was to (i) design, develop and validate a practical and physiologically relevant reconstituted in vitro […]

Effect of the doping time of the 1-butyl-3-methylimidazolium ionic liquid cation on the Nafion membrane proprieties Abstract: Nafion membranes were prepared by incorporating in the polymer matrix the 1-butyl-3-methylimidazolium (BMI+) ionic liquid cation at different doping […]

Nanosynthesis of Silver-Calcium Glycerophosphate: Promising Association against Oral Pathogens Abstract: Nanobiomaterials combining remineralization and antimicrobial abilities would bring important benefits to control dental caries. This study aimed to produce nanocompounds containing calcium glycerophosphate (CaGP) and silver […]

A Synaptic Electrochemical Memristor Based on the Cu2+/Zn2+ Cation Exchange in Zn:CdS Thin Films Abstract: Neuromorphic hardware systems that simulate functions of biological brain synapses have been widely investigated due to their possible application in brain-inspired […]

Promising effects of silver tungstate microcrystals on fibroblast human cells and three dimensional collagen matrix models: A novel non-cytotoxic material to fight oral disease Abstract: Silver tungstate (alpha-Ag2WO4) microcrystals have shown encouraging results regarding their antimicrobial […]

The effect of solution pH on the oscillatory electro-oxidation of methanol Abstract: The methanol electro-oxidation reaction (MER) was studied in a wide pH range under voltammetric and oscillatory regimes. Employing buffered hydrogen phosphates solutions, it was […]

Nanocomposites of polyethylene/polyaniline/graphite with special morphology Abstract: Nanofillers of polyaniline nanofibers (PANI) with graphite oxide (GO) or reduced graphite oxide (rGO) were synthesized and characterized. Four samples of PANI/graphite with 10% and 30% of GO or […]

Incorporation of TiO2 nanotubes in a polycrystalline zirconia: Synthesis of nanotubes, surface characterization, and bond strength Abstract: Material and method. TiO(2 )nanotubes were produced by alkaline synthesis, mixed with isopropyl alcohol (50 wt%) and applied on […]

Investigation of charge recombination lifetime in gamma-WO3 films modified with Ag-0 and Pt-0 nanoparticles and its influence on photocurrent density Abstract: In this communication, we report the growth of pure gamma-phase tungsten oxide (gamma-WO3) films on […]

Electrical transport properties and complex impedance investigation of Fe3+ and La3+ co-doping (Pb,Sr)TiO3 thin films Abstract:  This work investigates the impact of Fe3+ and La3+ co-doping on the structural, electrical transport and dielectric relaxation properties of […]

Direct photo-oxidation and superoxide radical as major responsible for dye photodegradation mechanism promoted by TiO2-rGO heterostructure Abstract: The increase in photocatalytic activity of reduced graphene oxide-TiO2 heterostructures under ultraviolet and visible illumination is already well known, […]

Red phosphor based on Eu3+-doped Y-2(MoO4)(3) incorporated with Au NPs synthesized via Pechini’s method Abstract: Structural, morphological and spectroscopic characterization of the Eu3+-doped Y-2(MoO4)(3) red phosphor incorporated with Au nanoparticles (Au NPs) synthesized via Pechini’s method […]

Magnetic anisotropy enhancing by remanent electric polarization in 0.675(Pb(Mg1/3Nb2/3)O-3-0.325PbTiO(2)/CoFe2O4 particulate composites Abstract: It is well known that the performance of magnetoelectric properties in multiferroic materials is dependent on the electric poling conditions. Few reports, however, have […]

Experimental and theoretical study of the energetic, morphological, and photoluminescence properties of CaZrO3:Eu3+ Abstract: In this study, we present a combined experimental and theoretical study of the geometry, electronic structure, morphology, and photoluminescence properties of CaZrO3:Eu3+ […]

Phase composition and ionic conductivity of zirconia stabilized with scandia and europia Abstract: Sintered specimens of zirconia-10 mol% scandia pure and codoped (up to 1.25 mol%) with europium sexquioxide were prepared by solid-state synthesis, aiming to […]

Poly(vinyl pyrrolidone) sub-microfibers produced by solution blow spinning Abstract: In this study, poly(vinyl pyrrolidone) (PVP) polymeric fibers were obtained by the solution blow-spinning (SBS) technique using PVP of low molecular weight. The fabrication of nano-microfibers of […]

Microwave-hydrothermal synthesis of Y3Fe3.35Al1.65O12 nanoparticles for magneto-hyperthermia application Abstract: Crystalline aluminum substituted yttrium iron garnet nanoparticles Y3Fe3.35Al1.65O12 (YIG) was synthesized by hydrothermal microwave synthesis at 140 degrees C with soaking times ranging from 15 to 60min. […]

Sol-gel synthesis of triclinic CoV2O6 polycrystals Abstract:  In this paper, a new chemical route synthesis for gamma-CoV2O6 is proposed. Based on the CoO-V2O5 phase diagram a study of temperature and calcination times for pure gamma-CoV2O6 obtainment […]

Electric field-assisted pressureless sintering gadolinium-, yttrium- and samarium-doped barium cerate Abstract: Gadolinium-, yttrium- and samarium-doped barium cerate compounds were sintered either conventionally at 1500 degrees C or applying an electric field at 1200 degrees C. The […]

Electrocatalytic Study of the Thin Metallopolymer Film of [2,2 ‘-{1,2-Ethanediylbis[Nitrilo(1E)-1-Ethyl-1-Ylidene]}Diphenolate]-Nickel(II) for Ethanol Electrooxidation Abstract: The present paper describes the electrochemical activity of a Ni(II)-Schiff base metallopolymer electrode for the oxidation of ethanol in alkaline media. The […]

Fabrication of waveguides by fs-laser micromachining in Dy3+/Eu3+ doped barium borate glass with broad emission in the visible spectrum Abstract: Boron-based glasses are relevant materials for optical applications on account its ability to hold large amount […]

Organometallic-mediated radical polymerization using well-defined Schiff base cobalt(II) complexes Abstract: A series of new cobalt(II) complexes of Schiff base derived from salicylaldehyde and different cycloalkylamines (cycloalkyl = cyclopentyl-1a, cyclohexyl-1b, and cycloheptyl-1c) was synthesized: [Co(CyPen-Salicyl)(2)] (2a), [Co(CyHex-Salicyl)(2)] […]

Lithium lanthanum titanate perovskite ionic conductor: Influence of europium doping on structural and optical properties Abstract: The present study reports the insertion of europium ions into the network of lithium lanthanum titanate, La0.5Li0.5TiO3, powders. The materials […]

A chemiresistor sensor based on a cobalt(salen) metallopolymer for dissolved molecular oxygen Abstract:  A resistance detection device for dissolved molecular oxygen in aqueous solutions is prepared using a chemiresistor material as sensor platform. The chemiresistive circuit […]

Electrochemical Deposition of the Single Phase TlxCu3-xSe2 Thin Films Abstract: In spite of selenide semiconductors having a wide application area, TlCu2Se2(TCSe) is poorly studied and its synthesis by non-vacuum or thermic methodology in film form is […]

Dentinal tubule obliteration using toothpastes containing sodium trimetaphosphate microparticles or nanoparticles Abstract: ObjectivesThis in vitro study evaluated the effect of microparticles (TMPmicro) or nanoparticles (TMPnano) TMP associated with fluoride (F) in toothpaste formulations on the obliteration […]

Physicochemical, osteogenic and corrosion properties of bio-functionalized ZnO thin films: Potential material for biomedical applications Abstract: Nano-sized zinc oxide (ZnO) is well known for its antibacterial activity and biocompatibility, which make this material a promising candidate […]

Zn1-xMgxO nanoparticles prepared by the polymeric precursor method: Correlation between photoluminescence and local structure Abstract: ZnO is an n-type semiconductor having a wide band gap which has been studied as green phosphors because of its luminescence […]

Photocurrent Response and Progesterone Degradation by Employing WO3 Films Modified with Platinum and Silver Nanoparticles Abstract: The effect of silver (Ag-0) and platinum (Pt-0) metallic nanoparticles (NPs) on WO3 film was investigated by studying the photocurrent […]

Influence of La substitution on local structural and photoluminescence properties of SrTiO3:Pr phosphor Abstract: Pr3+-doped perovskite-based SrTiO3 phosphors have been developed as a potential red phosphor. In this paper, we report the substitution of La3+ ions […]

First-principles calculations and Raman scattering evidence for local symmetry lowering in rhombohedral ilmenite: temperature- and pressure-dependent studies Abstract: ATiO(3)-type materials may exist in two different crystalline forms: the perovskite and ilmenite. While many papers have devoted […]

Computational Chemistry Meets Experiments for Explaining the Geometry, Electronic Structure, and Optical Properties of Ca10V6O25 Abstract: In this paper, we present a combined experimental and theoretical study to disclose, for the first time, the structural, electronic, […]

Piezoelectric Response of Porous Nanotubes Derived from Hexagonal Boron Nitride under Strain Influence Abstract: A computational study via periodic density functional theory of porous nanotubes derived from single-layer surfaces of porous hexagonal boron nitride nanotubes (PBNNTs) […]

Investigation of defects dependence of local piezoelectric response on Fe, La-modified (Pb,Sr)TiO3 thin films: A piezoresponse force microscopy study Abstract:  In this study, undoped-(Pb,Sr)TiO3 and Fe3+, La3+ co-doped (Pb,Sr)TiO3 thin films were investigated at the nanoscale […]

Computational simulations of ZnO@GaN and GaN@ZnO core@shell nanotubes Abstract:  The structural, electronic, and mechanical properties of armchair and zigzag chiralities double-walled and core@shell ZnO@GaN and GaN@ZnO nanotubes were investigated by periodic DFT/B3LYP calculations with an all-electron […]

Role of the reactive sputtering deposition power in the phase control of cobalt oxide films Abstract: The influence of the reactive magnetron sputtering deposition power on determining the stoichiometry and structure of cobalt oxide polycrystalline films […]

A DFT investigation of the role of oxygen vacancies on the structural, electronic and magnetic properties of ATiO(3) (A = Mn, Fe, Ni) multiferroic materials Abstract: In order to achieve deep insight into the multiferroic behavior […]

Influence of small amounts of gallium oxide addition on ionic conductivity of La0.9Sr0.1Ga0.8Mg0.2O3-delta solid electrolyte Abstract: The effects of small amounts of gallium oxide on intragrain and intergrain conductivity of La0.9Sr0.1Ga0.8Mg0.2O3.delta are investigated by impedance spectroscopy […]

Novel gas sensor with dual response under CO(g) exposure: Optical and electrical stimuli Abstract: In this work, a lanthanum (La) doped ceria (CeO2) film, which depicted a dual gas sensing response (electric and optical) for CO(g) […]

Multifunctional nanostructured Co-doped ZnO: Co spatial distribution and correlated magnetic properties   Abstract:  In this report we present a systematic structural and magnetic analysis of Co-doped ZnO nanoparticles prepared via a microwave-assisted hydrothermal route. The structural […]

Calculation of the optical phonons in ordered Ba2MgWO6 perovskite using short-range force field model Abstract: Ba2MgWO6 is a double perovskite tungstate presenting a cubic structure with cubic space group Oh5. This B-site ordered system has potential […]

Systematic evaluation of amorphous silica production from rice husk ashes Abstract: Amorphous silica (SiO2) was extracted from the rice husk ashes (RHAs) of the agulhinha and cateto varieties. Optimized time, temperature, extractor concentration, and reaction time […]

From Complex Inorganic Oxides to Ag-Bi Nanoalloy: Synthesis by Femtosecond Laser Irradiation Abstract: Bimetallic nanoalloys with a wide variety of structures and compositions have been fabricated through many diverse techniques. Generally, various steps and chemicals are […]

Influence of order-disorder effects on the magnetic and optical properties of NiFe2O4 nanoparticles Abstract:  In this study, we focused on the influence of structural order-disorder effects on the magnetic and optical properties of single-phase nickel ferrite […]

Simple and Fast Approach for Synthesis of Reduced Graphene Oxide-MoS(2 )Hybrids for Room Temperature Gas Detection Abstract: The combination of two highly versatile materials as reduced graphene oxide (rGO) and molybdenum disulfide (MoS2) forms the layered […]

Improving the ozone gas-sensing properties of CuWO4 nanoparticles Abstract: This paper consists of an experimental investigation on the effects of annealing temperature on the structural, surface and ozone gas-sensing properties of CuWO4 nanoparticles prepared via a […]

Characterization and electrochemical performance of CeO2 and Eu-doped CeO2 films as a manganese redox flow battery component Abstract: Hexagonal CeO2 and Eu-doped CeO2 nanoparticles were obtained using a facile microwave-hydrothermal method under mild conditions and their […]

Electronic structure, growth mechanism, and sonophotocatalytic properties of sphere-like self-assembled NiWO4 nanocrystals Abstract: In this communications, we report the synthesis of nickel tungstate (NiWO4) nanocrystals by controlled co-precipitation at 95 °C for 2 h, followed by heat treatment at 600 °C for 2 h. The structure of the […]

An approach for photodegradation mechanism at TiO2/SrTiO3 interface Abstract: TiO2/SrTiO3 heterojunction powders were obtained and characterized, and their photocatalytic potential was evaluated. The formation of the solid–solid interface was evidenced by secondary-phase formation in the interface […]

Connecting structural, optical, and electronic properties and photocatalytic activity of Ag3PO4:Mo complemented by DFT calculations Abstract: The present join experimental and theoretical work provides in-depth understanding on the relationship among structural, optical, and electronic properties and […]

The Role of Nb Addition in TiO2 Nanoparticles: Phase Transition and Photocatalytic Properties Abstract: This paper reports an experimental investigation on the effects of adding Nb on the thermal, structural, and photocatalytic properties of the TiO2 nanoparticles. It […]

Anomalous remnant magnetization in dilute antiferromagnetic Gd1−xYxB4 Abstract: Magnetic properties of dilute single crystals of Gd1−xYxB4 (x=0, 0.2, and 0.4) were systematically studied. These antiferromagnetic Shastry-Sutherland compounds display a remnant magnetization MRwhen field cooled below the Néel temperature TN. The […]

Synthesis of ZnO rod arrays on aluminum recyclable paper and effect of rod size on power density of eco-friendly nanogenerators Abstract: In this work, we demonstrated a novel and effective approach on the use of low-cost […]

Structural and electrical characterization of glasses in the Li2O-CaO-B2O3 system Abstract: Glasses in the ternary xLi2O + (33-x)CaO + 67B2O3 tetraborate system, with x = 0, 5, 10, 15, 20, 25, 30 and 33 mol%, were prepared by melting and casting. […]

Direct preparation of standard functional interfaces in oxide heterostructures for 2DEG analysis through beam-induced platinum contacts Abstract: Two-dimensional electron gas (2DEG) in SrTiO3/LaAlO3 heterostructures has been extensively studied in the last few years; however, little […]

Ion transport and capacitive properties of RuO2-SnO2 binary films Abstract: This paper reports the RuO2-SnO2 binary film synthesis and the influence of the SnO2composition increase in the ion transport and pseudocapacitive properties of RuO2. The binary oxide was […]

Investigation of trapping levels in p-type Zn(3)P(2 )nanowires using transport and optical properties Abstract: Here, we report the synthesis and structural characterization of high-quality Zn3P2 nanowires via chemical vapour deposition. Structural and morphological characterization studies […]

Effect of inhomogeneous Schottky barrier height of SnO2 nanowires device Abstract: The current–voltage (I–V) characteristics of metal–semiconductor junction (Au–Ni/SnO2/Au–Ni) Schottky barrier in SnO2 nanowires were investigated over a wide temperature range. By using the Schottky–Mott model, the […]

Dynamic magnetization on the low temperature magnetoelectric effect in multiferroic composites Abstract: The dependence of frequency and applied magnetic field in the magnetoelectric effect (ME) of the composites 0.68Pb(Mg1/3Nb2/3)-0.32PbTiO3/CoFe2O4 (PMN-PT/CFO) and 0.68Pb(Mg1/3Nb2/3)-0.32PbTiO3/NiFe2O4 (PMN-PT/NFO) are investigated. […]

Bismuth doping on CuGaS2 thin films: structural and optical properties Abstract: In this work, we present a solvothermal method to prepare bismuth (Bi)-doped CuGaS2 chalcopyrite nanocrystals ink and apply it to an allsolution-processed approach for […]

Study of thermal and mechanical properties of a biocomposite based on natural rubber and 45S5 BioglassA (R) particles Abstract: Biocomposites based on natural rubber (NR) reinforced with 45S5 Bioglass® (BG) particles were obtained by casting/evaporation […]

Photocatalytic activity and photoluminescence properties of TiO2, In2O3, TiO2/In2O3 thin films multilayer Abstract: This study evaluated the effect of crystallization temperature (300, 500 and 700 °C) on the photocatalytic and photoluminescent properties of the multilayer thin films […]

Separation technology meets green chemistry: development of magnetically recoverable catalyst supports containing silica, ceria, and titania Abstract: Magnetic separation can be considered a green technology because it is fast, efficient, consumes low energy, and minimizes the […]

Novel Route for Fabrication of ZnO nanorods-Au Nanoparticles Hybrids Directly Supported on Substrate and their Application as Gas Sensors Abstract: The aim of this study was to develop a novel, simple and fast route to prepare […]

Accessible ring opening metathesis and atom transfer radical polymerization catalysts based on dimethyl sulfoxide ruthenium(II) complexes bearing N-heterocyclic carbene ligands Abstract: Dimethyl sulfoxide ruthenium(II) complexes of N-heterocyclic carbenes derived from cycloalkylamines (cycloalkyl = cyclopentyl (1a), cyclohexyl (1b), cycloheptyl (1c), and […]

Influence Ca-doped SrIn2O4 powders on photoluminescence property prepared one step by ultrasonic spray pyrolysis Abstract: Crystalline Ca-doped SrIn2O4 structures were prepared by a rapid and efficient Ultrasonic Pyrolysis Spray (USP) method. The Sr1-xCaxIn2O4 (x = 0, 0.1, 0.2, 0.3, […]

X-ray Absorption Fine Structure (XAFS) Studies of Oxide GlassesA 45-Year Overview Abstract: X-ray Absorption Fine Structure (XAFS) spectroscopy has been widely used to characterize the short-range order of glassy materials since the theoretical basis was […]

Synthesis and structural evolution of partially and fully stabilized ZrO2 from a versatile method aided by microwave power Abstract: We propose a simple, fast, and economical method to obtain ZrO2 powders aided by microwave heating. […]

Red-light-emitting polymer composite based on PVDF membranes and Europium phosphor using Buriti Oil as plasticizer Abstract: Rare-earth-doped phosphors immobilized in polymeric matrices find many applications like LEDs. However, little emphasis has been paid to the phosphor […]

Orthorhombic SnO2 phase observed composite (Sn1-xCex)O-2 synthesized by sol-gel route Abstract: Semiconductor oxides are a class of materials used in many different applications, such as catalysis, solar cells and magnetic devices. In particular, composites with different […]

Photoluminescent properties of the Ba1-xZnxMoO4 heterostructure obtained by ultrasonic spray pyrolysis Abstract: In this study, Ba1−xZnxMoO4 (x = 0, 0.25, 0.5, 0.75 and 1) microspheres were the first time described in the literature the by ultrasonic […]

Luminescent and gas sensor properties of the ZrO2:Hhpa:Eu3+ Hybrid Compound Abstract: Luminescent complexes of rare earth have been extensively studied in different fields of research improving the industrial development of these materials for their utilization as […]

Development of a nanocomposite chemiresistor sensor based on pi-conjugated azo polymer and graphene blend for detection of dissolved oxygen Abstract: The present paper describes the electrochemical impedance activity of a hybrid film with graphene and […]

Bone repair with raloxifene and bioglass nanoceramic composite in animal experiment ABSTRACT Objective: This study proposes to evaluate, by means of microtomographic analysis, the topical potential of raloxifene combined with BioGran® through the sonochemical method in […]

Surface Physicochemical and Structural Analysis of Functionalized Titanium Dioxide Films Abstract: Titanium and its alloys are recognized as acceptable materials for many applications. The properties of titanium dioxide (TiO2) thin films are directly related to the structural characteristics of […]

Preparation of dense La0.9Sr0.1Ga0.8Mg0.2O3-delta with high ionic conductivity by solid-state synthesis Abstract: The results of a systematic investigation on the effects of processing steps, via solid-state reactions, on structural phase characteristics and ionic conductivity of La0.9Sr0.1Ga0.8Mg0.2O3-δsolid […]

Photoluminescence behavior on Sr2+ modified CaCu3Ti4O12 based ceramics Abstract: Sr2+ modified CaSrxCu3-xTi4O12ceramic powders with x = ranging from 0.00 to 3.00 were prepared by solid-state reaction. The effects of Sr2+ CCTO powders were evaluated by X-ray diffraction (XRD) with Rietveld refinement revealing a […]

Effect of Different Synthesis Methods on the Textural Properties of Calcium Tungstate (CaWO4) and Its Catalytic Properties in the Toluene Oxidation  Abstract: Calcium tungstate (CaWO4) crystals were prepared by microwave-assisted hydrothermal (MAH) and polymeric precursor methods […]

Influence of Cu substitution on the structural ordering, photocatalytic activity and photoluminescence emission of Ag3-2xCuxPO4 powders   Abstract: Materials presenting high photocatalytic performance and interesting photoluminescence emissions are promising candidates for photodegradation of organic pollutants […]

Cashew nut shell liquid, a valuable raw material for generating semiconductive polyaniline nanofibers Abstract: Cashew nut shell liquid (CNSL) is an abundant and renewable by-product of the cashew nut industry. It appears to be a […]

Sb doping of VLS synthesized SnO2 nanowires probed by Raman and XPS spectroscopy Abstract: We here report the growth and structural characterization of Sb-doped SnO2 nanowires synthesized by Vapor-Liquid-Solid technique using X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray […]

Electrostatic immobilization of antimicrobial peptides on polyethylenimine and their antibacterial effect against Staphylococcus epidermidis Abstract: Staphylococcus epidermidis is a gram-positive bacterium, and one of the most prevalent causes of nosocomial infections due to its strong […]

AC Electric Field Assisted Pressureless Sintering Zirconia: 3mol% Yttria Solid Electrolyte Abstract: 3 mol% yttria ionic conductors are sintered by applying AC electric fields with frequencies in the 0.5–1.0 kHz range at 1100 °C. The sintering experiments are […]

A versatile approach for the preparation of ceramics with porosity gradient: by using manganese and tin oxides as a model. Abstract: Porous ceramics that exhibit porosity gradient are considered promising materials from the industrial point […]

Chemical composition and morphology study of bovine enamel submitted to different sterilization methods Abstract: The morphology and chemical composition of enamel submitted to different sterilization methods was studied. X-ray photoelectron spectroscopy (XPS), field emission gun […]

Low Temperature Synthesis of Several Titanium Dioxide Solid Solutions through the Sol-Gel Method Abstract: Titanium dioxide powders constituted by anatase single phase are very useful to understand several properties of that semiconductor applied as photocatalyst […]

A novel WO3/MoS2 photocatalyst applied to the decolorization of the textile dye Reactive Blue 198 Abstract: A novel FTO/WO3 electrode decorated with MoS2 was constructed using two simple and low-cost techniques involving a modified single-step […]

Analysis of the sintering process in gadolinia-doped ceria by thermodilatometry and correlation with microstructure evolution Abstract: The non-isothermal sintering process of cerium dioxide containing gadolinium sesquioxide powders within a wide range of specific surface area was […]

A versatile approach for the preparation of ceramics with porosity gradient: by using manganese and tin oxides as a model Abstract: Porous ceramics that exhibit porosity gradient are considered promising materials from the industrial point of view, […]

Synergic effect of silver nanoparticles and carbon nanotubes on the simultaneous voltammetric determination of hydroquinone, catechol, bisphenol A and phenol Abstract: A glassy carbon electrode (GCE) was modified with multi-walled carbon nanotubes (MWCNT) and silver nanoparticles (AgNPs) and applied […]

Theoretical study of porous surfaces derived from graphene and boron nitride Abstract: Porous graphene (PG), graphenylene (GP), inorganic graphenylene (IGP-BN), and porous boron nitride (PBN) single-layer have been studied via periodic density functional theory with a […]

Zinc oxide surface functionalization and related effects on corrosion resistance of titanium implants Abstract: Important clinical concerns in orthopedics and dental implantology are associated with a significant release of titanium (Ti) metal ions and debris due to the […]

Experimental and theoretical study to explain the morphology of CaMoO4 crystals Abstract: CaMoO4 crystals were prepared by a controlled co-precipitation method and processed in a domestic microwave-assisted hydrothermal system with two different surfactants (ethyl 4-dimethylaminobenzoate […]

High-performance ultraviolet-visible driven ZnO morphologies photocatalyst obtained by microwave-assisted hydrothermal method Abstract: The use of extensive, time-consuming synthesis and the cost of an additional element in synthesis makes difficult the synthesis of photocatalyst active under a […]

Green synthesis of silver nanoparticles combined to calcium glycerophosphate: antimicrobial and antibiofilm activities Abstract: To synthesize, characterize and evaluate the antimicrobial and antibiofilm activities of novel nanocomposites containing silver nanoparticles (AgNPs) associated or not to β-calcium […]

Electrosteric colloidal stabilization for obtaining SrTiO3/TiO2 heterojunction: Microstructural evolution in the interface and photonics properties Abstract: Researches on solids heterojunctions has proven to be an important field for technological applications due to synergism achieved by interface phenomena. […]

A versatile approach for the preparation of ceramics with porosity gradient: by using manganese and tin oxides as a model Abstract: Porous ceramics that exhibit porosity gradient are considered promising materials from the industrial point of […]

Silver-controlled evolution of morphological, structural, and optical properties of three-dimensional hierarchical WO3 structures synthesized from hydrothermal method Abstract: Hierarchical structures of self-assembled three-dimensional (3D) WO3–Ag were synthesized via hydrothermal growth using precursor solutions of peroxopolytungstic acid […]

PVDF/Ni fibers synthesis by solution blow spinning technique Abstract: The development of polymeric fibers incorporated with nickel (Ni) nanoparticles (NPs) has gained broad interest due to its applications, mainly for impurities removal from oil with the […]

Porous silicene and silicon graphenylene-like surfaces: a DFT study Abstract: Nanoporous single-layers surfaces derived from silicene, named porous silicene (PS) and silicenylene (SC) have been studied via periodic density functional theory with a modified B3LYP functional […]

Microwave-assisted hydrothermal synthesis followed by heat treatment: A new route to obtain CaZrO3 Abstract: CaZrO3 nanoparticles were obtained by a new synthesis route: nucleation using the microwave-assisted hydrothermal method (MAH) and crystallization by heat treatment. Structural characterization […]

Dielectric and non-ohmic properties of Ca2Cu2Ti4-xSnxO12 (0.0 <= x <= 4.0) multiphasic ceramic composites Abstract: Multiphasic Sn4+ substituted Ca2Cu2Ti4-xSnxO12 (0.0 ≤ x ≤ 4.0) ceramic composites were prepared by solid-state reaction. Their crystalline structure, microstructure, dielectric and non-ohmic properties were investigated. The […]

Calcium doped BiFeO3 films: Rietveld analysis and piezoelectric properties Abstract: Pure and calcium modified CaxBi(1−x)FeO3 (x = 0.0, 0.1, 0.2, 0.30) thin films were fabricated on Pt(111)/Ti/SiO2/Si substrates by the soft chemical method. The crystal structure and physical […]