Artigos 2022

α-Ag2WO4 under microwave, electron beam and femtosecond laser irradiations: Unveiling the relationship between morphology and photoluminescence emissions Abstract: In this study, the α-Ag2WO4 samples were successfully synthesized combined two methods, co-precipitation and microwave-assisted hydrothermal. Later, […]

A TD-DFT-Based Study on the Attack of the OH· Radical on a Guanine Nucleotide Abstract: Heavy charged particles induce severe damage in DNA, which is a radiobiological advantage when treating radioresistant tumors. However, these particles […]

Chemoselective Ru-Catalyzed Oxidative Lactamization vs Hydroamination of Alkynylamines: Insights from Experimental and Density Functional Theory Studies Abstract: The Ru-catalyzed intramolecular oxidative amidation (lactamization) of aromatic alkynylamines with 4-picoline N-oxide as an external oxidant has been […]

Effect of Eu3+ on the Structural, Magnetic and Mössbauer Spectroscopy Studies of Copper Ferrite Abstract: Here, theoretical and practical methods were used to study the impact of Eu3+ substitution on copper ferrites. The spinel cubic […]

Thermosensitive and Biocompatible Nanocomposites of Poly(N-vinylcaprolactam) and Hydroxyapatite with Potential Use for Bone Tissue Repair Abstract: Thermosensitive nanocomposites of poly(N-vinylcaprolactam) and hydroxyapatite nanoparticles synthesized by hydrothermal processing were prepared by in situ polymerization in dimethyl […]

An accurate computational model to study the Ag-doping effect on SrTiO3 Abstract: Computational simulations via Density Functional Theory were carried out to study the effect of Ag-doping on SrTiO3 and its properties. For accurate results, […]

The endocannabinoid system in zebrafish and its potential to study the effects of Cannabis in humans Abstract: Zebrafish is considered an unprecedented animal model in drug discovery. A review of the literature presents highlights and […]

Calcium Chloride Toxicology for Food Safety Assessment Using Zebrafish (Danio rerio) Embryos Abstract: The salt calcium chloride (CaCl₂) is widely used in industry as a food additive; levels for human consumption are regulated by international […]

Rising atmospheric CO2 concentration affect weedy rice growth, seed shattering and seedbank longevity Abstract: Weedy rice (Oryza sp.) is one of the most troublesome global weeds in cultivated rice. Its troublesome status is associated with […]

Impedance Spectroscopy as a Methodology to Evaluate the Reactivity of Metakaolin Based Geopolymers Abstract: The aim of this study was to use the electrical impedance spectroscopy technique (IS) to carry out a systematic study on […]

Microbiological Properties and Cytotoxicity of PNVCL Hydrogels Containing Flavonoids as Intracanal Medication for Endodontic Therapy Abstract: This study aimed to evaluate the cytotoxicity and microbiological properties of poly (N-vinylcaprolactam)—PNVCL hydrogels containing flavonoids as intracanal medication […]

Ethanol Oxidation Reaction Mechanism on Gold Nanowires from Density Functional Theory Abstract: Thin gold nanowires (NWs) are materials that could be used as support in different chemical reactions. Using density functional theory (DFT) it was […]

Evolution of the Fe-Co magnetism and magnetic proximity effects in alternate Fe/Co monolayers on nonmagnetic Cu3Au(001) Abstract: Magnetic heterostructures with ferromagnetic/nonmagmetic interfaces are very interesting materials due to the possibility to switch the magnetization, to […]

Siloxane-modified bacterial cellulose as a promising platform for cell culture Abstract: Cellulose is a versatile tunable material that finds application in the biomedical field as substrate for cell culture. However, few studies have been done […]

Ru/Pd Complex and Its Monometallic Fragments as Catalysts for Norbornene Polymerization via ROMP and Addition Abstract: The [Ru(PPh3)2Cl-piperidine(4-aminomethyl)] complex (mono-Ru) was synthesized from [Ru(PPh3)3Cl2] and 4-(aminomethyl)piperidine, whereas the [(PPh3)PdCl(Shiff-pip)] complex (mono-Pd) was obtained by reacting […]

Online near-infrared spectroscopy for automatic polymeric material identification Abstract: Additive manufacturing (AM) offers several advantages for transforming productive chains, such as generation of complex geometries on demand. However, challenges must be overcome toward increasing manufacturing […]

Effect of calcination temperature and pressure-assisted heat treatment on the dye degradation performance of SnO2 photocatalyst obtained by a simple synthesis method Abstract: SnO2 particles were synthesized by the co-precipitation method. The effect of annealing […]

Graphite-Based Multianalyte VOC Gas Detection on Multichannel PCB IDE Sensor Abstract: In this article, we present the development of a volatile organic compound (VOC) gas sensor based on graphite on a printed circuit board (PCB) […]

Formation of craze-like pattern in polypropylene UV-induced surface cracking Abstract: Polypropylene (PP) samples were exposed to accelerated aging with UV-C light and showed a morphology inside the crackings like that of thermoplastic polymers under stress, […]

Hybrid exchange–correlation functionals for van der Waals TiSe2 material: Parametrization versus a posteriori D3 dispersion corrections Abstract: Superconductivity is one of the most interesting electrical phenomena found in Physical Science. The null electrical resistance provides […]

Recent advances on nanohybrid systems constituting clay–chitosan with organic molecules – A review Abstract: Bionanocomposites include matrices and dispersed phases that combine two or more biomolecules on a nanometric scale to enhance some nanomaterial properties such as biocompatibility and biodegradability. […]

The Influence of Magnetic Field and Nanoparticle Concentration on the Thin Film Colloidal Deposition Process of Magnetic Nanoparticles: The Search for High-Efficiency Hematite Photoanodes Abstract: Hematite is considered a promising photoanode material for photoelectrochemical water […]

DFT Calculations for Structural, Electronic, and Magnetic Properties of ZnFe2O4 Spinel Oxide: The Role of Exchange-Correlation Functional Abstract: In this study, quantum-mechanical calculations in the framework of the Density Functional Theory (DFT) were performed to […]

Particleboards manufactured from Tectona grandis wood waste with homogeneous and three-layer heterogeneous compositions for commercial purposes Abstract: Tectona grandis wood presents decent dimensional stability as well as highly suitable physical and mechanical properties. These characteristics […]

Disclosing the Biocide Activity of α-Ag2−2xCuxWO4 (0 ≤ x ≤ 0.16) Solid Solutions Abstract: In this work, α-Ag2−2xCuxWO4 (0 ≤ x ≤ 0.16) solid solutions with enhanced antibacterial (against methicillin-resistant Staphylococcus aureus) and antifungal (against […]

Multivariate approaches applied to optimization of an ultrasound-assisted extraction procedure for determination of essential elements in guarana samples by ICP OES Abstract: In the present work, a simple and high-throughput analytical procedure based on ultrasound-assisted […]

PAAm/CMC/nanoclay nanocomposite hydrogel: understanding the influence of initiators on the chain-growth mechanisms Abstract: In this study, heat measurements were used to investigate the influence of three initiators on the chain-growth mechanisms of polyacrylamide/carboxymethylcellulose/nanoclay nanocomposite hydrogels. […]

The role of Nb2O5 deposition process on perovskite solar cells Abstract: Two different methods are used to deposit Nb2O5 as compact electron transport layers in n-i-p double cation mixed-halide perovskite Cs0.17FA0.83Pb(I0.83Br0.17)3 solar cells: reactive sputtering […]

Transgenerational Effect of Drought Stress and Sub-Lethal Doses of Quizalofop-p-ethyl: Decreasing Sensitivity to Herbicide and Biochemical Adjustment in Eragrostis plana Abstract: (1) Background: Eragrostis plana Ness is a invasive C4 perennial grass in South America […]

Stability and Rupture of an Ultrathin Ionic Wire Abstract: Using a combination of in situ high-resolution transmission electron microscopy and density functional theory, we report the formation and rupture of ZrO2 atomic ionic wires. Near […]

Photoluminescence and X-ray induced scintillation in Gd3+-modified fluorophosphate glasses doped with Ce3+ Abstract: In this work, we report the fabrication of Gd3+-modified fluorophosphate glasses doped with Ce3+ with the new compositions 50NaPO3–20BaF2-(10-x)CaF2-20GdF3-xCeCl3, x = 0.3; […]

Titanium dioxide nanotubes in a hydrogen peroxide-based bleaching agent: physicochemical properties and effectiveness of dental bleaching under the influence of a poliwave led light activation Abstract: ObjectivesThe effects of different concentrations of titanium dioxide (TiO2) […]

Chemometric Evaluation of Poly(3-hexylthiophene) Electrochemical Aging Path as a Function of Electrochemical Synthesis Variables Abstract: Conductive polymers are versatile materials that can be applied in many different technology fields, especially green energy. They have several […]

Effect of Zr content on the physicochemical, electrochemical, and biological properties of Ti80Nb20-based alloys Abstract: The β-Ti alloys have become very attractive in the area of biomedical materials due to their corrosion resistance, biocompatibility, and […]

Morphological transformations mapping of CaXO4 (X = Mo or W) and their surface stability Abstract: The knowledge about the mechanisms of the morphological control of nanoparticles (NPs) is directly correlated with the atomic configurations of […]

Influence of processing parameters variation on the development of geopolymeric ceramic blocks with calcined kaolinite clay Abstract: The cement industry is responsible for a considerable part of the emission of gases that cause the greenhouse […]

Graphite nanosheet/polyaniline nanocomposites: Effect of in situ polymerization and dopants on the microstructure, thermal, and electrical conduction properties Abstract: This work proposed a study of in situ polymerization of polyaniline (Pani) in the presence of […]

Unveiling photoluminescent response of Ce-doped CaCu3Ti4O12: An experimental-theoretical approach Abstract: CaCu3Ti4O12: x% Ce (x = 0.00, 0.25, 0.50, 0.75, and 1.00) ceramic composites were prepared via solid-state reaction. Theoretical atomistic simulations were combined with experimental […]

Thermal annealing of natural rubber films controls wettability and enhances cytocompatibility Abstract: In spite of the widespread use of natural rubber in regenerative therapies, thermally induced modifications of its complex chemical structure and their effect […]

Graphene oxide-safranin modified@polyacrylonitrile membranes for water purification: Reuse and mechanism based on theoretical calculations and XPS analysis Abstract: The difficulty in metabolizing and degrading complex dyes containing three or more aromatic rings ascends new alternatives […]

New graphene oxide-safranin modified@polyacrylonitrile membranes for removal of emerging contaminants: The role of chemical and morphological features Abstract: Polymeric membranes incorporated with graphene oxide (GO) are promising materials for treating contaminated water, but few studies […]

Buffer Zones for 2,4-D Applications Nearby Tobacco Fields Abstract: An increase in 2,4-D use is expected as tolerant crops have been approved to use in Brazil, which may negatively affect important crops such as tobacco. […]

Femtosecond-laser processing incubation in Diamond-like carbon Abstract: Diamond-like carbon (DLC) has been commercialized as an advanced material for combining diamond and graphite properties with other material systems, with ease of processing and reduced costs. DLC […]

Role of anion size in the electrochemical performance of a Poly(thionine) redox conductive polymer using electrochemical impedance spectroscopy Abstract: Thionine is one of the most studied monomers for the synthesis of conductive polymer films by […]

Hydrophobization and odorization of wood for use in civil construction by immersion in nanoemulsions of tea tree and copaiba essential oil Abstract: Wood is a raw material from renewable source widely used by the construction […]

CuO nanoparticles decorated on hydroxyapatite/ferrite magnetic support: photocatalysis, cytotoxicity, and antimicrobial response Abstract: Photocatalysts supported in magnetic nanocomposites for application in environmental remediation processes have been evaluated for removing contaminants due to easy recovery and […]

Eumelanin-based multisensory platform: A case of study for photolithographic patterning Abstract: Eumelanin, the most abundant brown-black pigment found in humans, is an ideal candidate for bioelectronics and eco-design technologies due to its biocompatibility, biodegradability, and […]

SlS5H silencing reveals specific pathogen-triggered salicylic acid metabolism in tomato Abstract: BackgroundSalicylic acid (SA) is a major plant hormone that mediates the defence pathway against pathogens. SA accumulates in highly variable amounts depending on the […]

β-Cyclodextrin PAMAM Dendrimer Surface Doped with Silver and Hexacyanoferrate (III) and its Applications for Dopamine Detection in Synthetic Samples Abstract: A synthesis of β-cyclodextrin (β-Cd) functionalized with polyamide dendrimer PAMAM G.0 complexed with silver and […]

Interfacial Characterization of Polypyrrole/AuNP Composites towards Electrocatalysis of Ascorbic Acid Oxidation Abstract: Polypyrrole (PPy) is an interesting conducting polymer due to its good environmental stability, high conductivity, and biocompatibility. The association between PPy and metallic […]

Room temperature ferromagnetism in oxygen-deficient gallium oxide films with cubic spinel structure Abstract: Oxygen-defective gallium oxide (Ga2O3-x with 0.4 < x < 0.7) thin films with cubic spinel structure were deposited on c-cut epi-polished sapphire […]

Magnetic flux penetration in nanoscale wedge-shaped superconducting thin films Abstract: Thickness uniformity is regarded as an important parameter in designing thin film devices. However, some applications based on films with nonuniform thickness have recently emerged, […]

Interface matters: Design of an efficient CaCu3Ti4O12-rGO photocatalyst Abstract: Different strategies have been investigated to enhance optical properties of semiconductor oxides such as CaCu3Ti4O12, e.g., reduced graphene oxide. This research focuses on photoluminescent and photocatalytic […]

Adsorption of polycyclic aromatic hydrocarbons from wastewater using graphene-based nanomaterials synthesized by conventional chemistry and green synthesis: A critical review Abstract: Polycyclic aromatic hydrocarbons (PAHs) are organic pollutants formed mainly by the incomplete combustion of […]

Comparative efficiency of polycyclic aromatic hydrocarbon removal by novel graphene oxide composites prepared from conventional and green synthesis Abstract: New materials have been developed based on the pillars of green chemistry; however, few studies compare […]

Glycerol-assisted degradation of dibenzothiophene by Paraburkholderia sp. C3 is associated with polyhydroxyalkanoate granulation Abstract: Glycerol is a biodiesel byproduct. In the present study, glycerol was used as a co-substrate during biodegradation of dibenzothiophene (DBT) by […]

Electrospinning Composites as Carriers of Natural Pigment: Screening of Polymeric Blends Abstract: Several studies have already demonstrated that electrospinning is an excellent tool for forming nano/microfibers. However, the number of parameters affecting the formation of […]

Combining Raman spectroscopy and synchrotron X-ray diffraction to unveil the order types in A3CaNb2O9 (A = Ba, Sr) complex perovskites Abstract: The structural ordering process in complex perovskites has a pivotal role for tuning many physical properties […]

Conjugation of Ctx(Ile21)-Ha Antimicrobial Peptides to Chitosan Ultrathin Films by N-Acetylcysteine Improves Peptide Physicochemical Properties and Enhances Biological Activity Abstract: The importance of obtaining new compounds with improved antimicrobial activity is a current trend and […]

Effect of Water Deficit on Growth and Photoassimilate Partitioning in Leersia hexandra and Luziola peruviana Abstract: Minimum tillage in rice production is increasing in southern Brazil, reaching 60% of the total planted area. Compared to […]

Phase transformation/stabilization and ionic conductivity in tantalum oxide co-doped zirconia-scandia solid electrolyte Abstract: The influence of small amounts of tantalum oxide as co-dopant on phase transformation and stabilization, microstructure and ionic conductivity of zirconia-10 mol% […]

Facile preparation of Nb2O5/TiO2 heterostructures for photocatalytic application Abstract: Nb2O5/TiO2 heterostructure was prepared using the microwave-assisted hydrothermal method and characterized by different techniques. The sample was submitted to a photocatalytic degradation test using the discoloration […]

Thermal Stability and Crystallization Behavior of Contaminated Recycled Polypropylene for Food Contact Abstract: Polypropylene is one of the most widely used polymers, especially in the food packaging industry, which causes negative environmental effects. Recycling is […]

Synthesis, Application and Effect of Hybrid Nanocomposites Based on Hydrogel and Nanoclay in Cement-Mortars Abstract: Hybrid nanocomposite hydrogels, as admixtures for internal curing of cementitious materials, have been widely studied. This study analyzes the effect […]

Electronic, mechanical and piezoelectric properties of glass-like complex Na2Si1−xGexO3 (x = 0.0, 0.25, 0.50, 0.75, 1.0) Abstract: Motivated by our previous work on pristine Na2SiO3, we proceeded with calculations on the structural, electronic, mechanical and […]

Sodium-Ion-Based Hybrid Devices Abstract: The rapid growth of the population and the global economy has significantly increased the demand for energy consumption. To this end, batteries and electrochemical supercapacitors (ESCs) are recognized as the two […]

Ammonia production from nitrogen under simulated solar irradiation, low overpotential, and mild conditions Abstract: Here, we describe a strategy for the mild synthesis of ammonia (NH3) from the photoelectrocatalytic reduction of dinitrogen. A gas diffusion […]

Sustainability in Solar Cells Abstract: Sustainability means “development that meets the needs of the present without compromising the ability of future generations to meet their own needs.” Solar energy is a widely accepted definition of […]

Unveiling the mechanism of the triethyl phosphate hydrolysis reaction in the synthesis of the sol-gel-derived 58S bioactive glass Abstract: The sol-gel method is one of the most used methods due to its outstanding capacity to […]

Application of the experimental design in the optimization of a procedure for antimony (Sb) remediation in environmental samples employing mesoporous array Abstract: This study describes the sustainable and eco-friendly synthesis of the silica-based mesoporous structure […]

Polycyclic Aromatic Hydrocarbons Removal from Aqueous Solution with PABA-MCM-41/Polyethersulfone Mixed Matrix Membranes Abstract: Polycyclic aromatic hydrocarbons (PAHs) are one of the most recalcitrant pollutant originated from the burning of coal, petroleum, and other fossil fuels. […]

A label-free Acetone based SnO2 nanowire network sensor at room temperature Abstract: Acetone is a toxic gas employed in several pharmaceutical and commercial preparations, circumstances that demand efficient exposure control methods. Quasi-one-dimensional SnO2 (n-type) is a […]

A critical view of the contributions of photoelectrochemical technology to pharmaceutical degradation Abstract: The deterioration of water quality and its reuse has generated the necessity to develop water treatment processes with different qualities for industry, […]

Fast and efficient electrochemical thinning of ultra-large supported and free-standing MoS2 layers on gold surfaces Abstract: Molybdenum disulfide (MoS2) is a very promising layered material for electrical, optical, and electrochemical applications because of its unique […]

Tunning the Gas Sensing Properties of rGO with In2O3 Nanoparticles Abstract: Here, we discuss the effect of In2O3 nanoparticles on the reduced graphene oxide (rGO) gas-sensing potentialities. In2O3 nanoparticles were prepared with the polymer precursors […]

Parallel-solution blow spun Al-SnO2/F-SnO2 fibers as an efficient room temperature ethanol sensor Abstract: In the last few years, the design of room-temperature gas sensors is in growing demand. This is because high operating temperatures increase power […]

Lesion Volume Quantification Using Two Convolutional Neural Networks in MRIs of Multiple Sclerosis Patients Abstract: Background: Multiple sclerosis (MS) is a neurologic disease of the central nervous system which affects almost three million people worldwide. […]

SrW(1-x)MoxO4 solid solutions: Modulation of structural and photoluminescent properties and white light emission Abstract: SrW(1-x)MoxO4 (x = 0, 0.25, 0.5, 0.75, 1) inorganic phosphors were synthesized by the microwave-hydrothermal method (MHM). Structural changes are evaluated by changes in the crystal lattice […]

Bisphosphonates on Smooth TiO2: Modeling and Characterization Abstract: Bisphosphonates adsorbed on TiO2 were investigated in this work. Molecules can vary their reactivity according to medium and deprotonation. X-ray photoelectron spectroscopy demonstrated that functionalization occurs in a […]

Computational design of cutin derivative bio-materials from fatty acids Abstract: In recent decades, awareness for the preservation of the environment, promoted by government policies and international organizations, has intervened, amid other things, to encourage the […]

Femtosecond-laser fabrication of magneto-optical waveguides in terbium doped CaLiBO glass Abstract: Femtosecond laser micromachining has potential application in integrated photonics thanks to its ability to produce micrometer-size three-dimensional structures in different types of materials, including […]

Tug-of-War Driven by the Structure of Carboxylic Acids: Tuning the Size, Morphology, and Photocatalytic Activity of α-Ag2WO4 Abstract: Size and morphology control during the synthesis of materials requires a molecular-level understanding of how the addition […]

Connecting morphology and photoluminescence emissions in β-Ag2MoO4 microcrystals Abstract: This work elucidates the morphology-photoluminescence (PL) emission relationships, based on experimental and calculated results, on β-Ag2MoO4 samples synthesized by microwave-assisted hydrothermal method. It was shown that […]

Effect of Topical PTH 1-34 Functionalized to Biogran® in the Process of Alveolar Repair in Rats Submitted to Orchiectomy Abstract: There are many therapies for osteoporosis control and bone maintenance; anabolic drugs such as teriparatide […]

Fermented Jussara: Evaluation of Nanostructure Formation, Bioaccessibility, and Antioxidant Activity Abstract: Among the species of plants present in the Atlantic Forest, the jussara (Euterpe edulis Mart.) stands out for the contents of bioactive compounds present […]

Synthesis and evaluation of photocatalytic and photoluminescent properties of Zn2+-doped Bi2WO6 Abstract: This study consists of the synthesis of zinc-doped Bi2WO6 obtained by the sonochemical method. The XRD results indicated that the samples showed an […]

Observation of dielectric dispersion and relaxation behavior in Ni2+-substituted cobalt ferrite nanoparticles Abstract: In this study, a joint theoretical and experimental approach was employed to investigate the structural, electronic, magnetic and dielectric properties of novel […]

Rapid and sensitivity determination of macrolides antibiotics using disposable electrochemical sensor based on Super P carbon black and chitosan composite Abstract: Antibiotics in water bodies have raised global concerns due to the risk of developing […]

A Triboelectric Nanogenerator for Energy Harvesting from Transformers’ Vibrations Abstract: Transformers can produce gases dissolved in oil that can cause damage to their structures, and preventing failures caused by these gases is a goal to […]

Ag2WO4 as a multifunctional material: fundamentals and progress of an extraordinarily versatile semiconductor Abstract: Silver tungstate (Ag2WO4) based materials are intensively studied because of their unique chemical and physical properties. Ag2WO4 polymorphs present discrete and intrinsically complex […]

Hydrogenated amorphous carbon film deposited by plasma on recycled polypropylene as a functional barrier to hazardous migrants Abstract: Polypropylene (PP) is one of the most used polymers, especially in single-use packaging, as well as in […]

YVO4:RE (RE = Eu, Tm, and Yb/Er) nanoparticles synthesized by the microwave-assisted hydrothermal method for photoluminescence application Abstract: Here, an experimental study is presented on the YVO4:RE (RE = Eu, Tm, and Yb/Er) nanoparticles synthesized […]

PTH 1-34-functionalized bioactive glass improves peri-implant bone repair in orchiectomized rats: Microscale and ultrastructural evaluation Abstract: The objective of this work was to investigate the use of Biogran® functionalized with parathyroid hormone (PTH) 1–34 by […]

Effectiveness of Experimental Whitening Toothpastes Containing Colorants on the Optical Properties of Enamel Abstract: Objective: This in vitro study investigated the whitening potential of experimental toothpastes containing optical colorants in their formulations in comparison with […]

DFT studies on PbO2 and binary PbO2/SnO2 thin films Abstract: Periodic quantum mechanics DFT calculations have been employed to investigate surface and electronic properties of β-PbO2 thin films and binary β-PbO2/SnO2 thin films with crystallographic […]

Cytotoxic Effects Caused by Functionalized Carbon Nanotube in Murine Macrophages Abstract: Background/aims: The development of new nanomaterials has been growing in recent decades to bring benefits in several areas, especially carbon-based nanoparticles, which have unique […]

Polypropylene Modified with Ag-Based Semiconductors as a Potential Material against SARS-CoV-2 and Other Pathogens Abstract: The worldwide outbreak of the coronavirus pandemic (COVID-19) and other emerging infections are difficult and sometimes impossible to treat, making […]

Bactericidal activity of Ag4V2O7/β-AgVO3 heterostructures against antibiotic-resistant Klebsiella pneumoniae Abstract: Although Ag-based materials are efficient against antibiotic-resistant bacteria, their high toxicity to living organisms represents a major challenge for obtaining useful products. In this work, we report […]

Fe3O4 nanoparticles and Rhizobium inoculation enhance nodulation, nitrogen fixation and growth of common bean plants grown in soil Abstract: The effects of Fe3O4 nanoparticles (NPs) and Rhizobium inoculation on nodulation, nitrogen fixation and plant growth […]

Thermoelectric properties of Sb-doped tin oxide by a one-step solid-state reaction Abstract: Recently, oxide-based materials have proven to be potential thermoelectric materials at high temperatures. In this work, the thermoelectric properties of one-step solid-state sintered […]

Pesquisadores do Centro de Desenvolvimento de Materiais Funcionais (CDMF) encerraram nesta quinta-feira (29) suas participações na XX Brazil MRS Meeting, promovida anualmente pela Sociedade Brasileira de Pesquisa em Materiais (SBPMat), realizada em Foz do Iguaçu, […]

Efeitos da adição de nanocompósito híbrido baseado em hidrogel de polissacarídeo e nanoargila nas propriedades nos estados fresco e endurecido de argamassas cimentícias Abstract: As argamassas são compósitos heterogêneos cujo ganho de resistência ocorre por […]

Abnormal resistive switching in electrodeposited Prussian White thin films Abstract: Prussian White (PW) layers were deposited on Au/Cr/Si substrates by electrodeposition and characterized by different techniques. Scanning electron microscopy (SEM) images and Raman mapping reveal […]

Comparison of osseointegration in areas grafted with different osteoconductive biomaterials Abstract: This study evaluated osseointegration in areas grafted with deproteinized bovine bone (DBB) and biphasic ceramic based on hydroxyapatite and beta-tricalcium phosphate (HA/TCP) in rat […]

Integrated experimental and theoretical study on the phase transition and photoluminescent properties of ZrO2:xTb3+ (x=1, 2, 4 and 8 mol %) Abstract: Zirconia (ZrO2) has been intensively studied as an important ceramic material, and numerous […]

High-performance CeO2:Co nanostructures for the elimination of accidental poisoning caused by CO intoxication Abstract: Owing to the global upward trend of accidental carbon monoxide (CO) poisoning in the past 30 years, this work aimed to […]

Comparison of the osseointegration of implants placed in areas grafted with HA/TCP and native bone Abstract: This study evaluated the osseointegration of implants in areas grafted with biphasic ceramic based on hydroxyapatite/β-tricalcium phosphate (HA/TCP) and […]

Organo-functionalized MoS2 as a nanofiller to enhance and control the swelling behavior of polybutadiene rubber nanocomposites Abstract: The functionalized MoS2 (f-MoS2), synthesized at different temperatures, was incorporated in polybutadiene (PB) rubber as a nanofiller and […]

Enantiomer-dependent immunological response to chiral nanoparticles Abstract: Chirality is a unifying structural metric of biological and abiological forms of matter. Over the past decade, considerable clarity has been achieved in understanding the chemistry and physics […]

Enhanced red emission in Sr(1-x)EuxMo0.5W0.5O4 (x = 0.01, 0.02, 0.04) phosphor and spectroscopic analysis for display applications Abstract: The particles of the solid solution of strontium molybdate and tungstate (SrMo0.5W0.5O4) were doped with Eu3+ ions at concentrations […]

Red-emitting CaWO4:Eu3+,Tm3+ phosphor for solid-state lighting: Luminescent properties and morphology evolution Abstract: CaWO4:xEu3+,yTm3+ crystals were obtained by facile synthesis at low temperature by the microwave-assisted hydrothermal method (MAH). The phase formation, morphology, luminescent properties and […]

Direct anodization–reduction nanomodification of gold films: investigating electrocatalysis of the emerging contaminant halobenzoquinone Abstract: Controlling the sensitivity, quantification, and detection limits of electrochemical sensors is an ongoing challenge. The properties of thin modified gold-film electrodes […]

Enhancement of the ozone-sensing properties of ZnO through chemical-etched surface texturing Abstract: Semiconductor metal oxides (SMOx) are widely studied for different applications. It is well established that the gas-SMOx interaction strongly depends on the charge […]

Site-selective proteolytic cleavage of plant viruses by photoactive chiral nanoparticles Abstract: Viral diseases of plants are associated with large health and economic costs. Antiviral agents developed for mammalian organisms have had limited success for plants, […]

Revisiting the hydroxylation phenomenon of SiO2: a study through “hard-hard” and “soft–soft” interactions Abstract: Surface hydroxylation has been extensively studied over the years for a variety of applications, and studies involving hydroxylation of different silica […]

Transition metal (Nb and W) doped TiO2 nanostructures: The role of metal doping in their photocatalytic activity and ozone gas-sensing performance Abstract: Semiconducting metal oxide nanostructures have drawn much attention from the researchers due to […]

On electron loss lowering at hematite photoelectrode interfaces Abstract: Photoelectrodes nanoscale interface design has become a key factor to enhancing their photoelectrochemical performance for water splitting by reducing the photogenerated charge recombination, thus ensuring their […]

Chromium in lead metasilicate glass: Solubility, valence, and local environment via multiple spectroscopy Abstract: In this article the doping of chromium in a lead metasilicate glass is explored using Raman, UV–Vis, and Cr K-edge XANES […]

Methylated DNA impedimetric immunosensor based on azo-polymer-AuNPs dots and 5-methylcytosine antibody using dissolved oxygen as a redox probe Abstract: The present work describes the development of an electrochemical immunosensor for the direct determination of methylated […]

Smart Bone Graft Composite for Cancer Therapy Using Magnetic Hyperthermia Abstract: Magnetic hyperthermia (MHT) is a therapy that uses the heat generated by a magnetic material for cancer treatment. Magnetite nanoparticles are the most used […]

Electrically conductive nanocomposites produced by in situ polymerization of pyrrole in pre-vulcanized natural rubber latex Abstract: Flexible conductive polymeric nanocomposites were produced by in situ polymerization of polypyrrole (PPy) in a natural rubber (NR) latex […]

Inorganic graphenylene-like silicon carbide as anode material for Na batteries Abstract: Sodium-based batteries are a viable alternative due to the abundance of Na in the environment and their higher sustainability compared to traditional lithium batteries. […]

Efficacy of instillation of MB49 cells and thermoreversible polymeric gel in urothelial bladder carcinoma immunization Abstract: Activating the immune system for therapeutic benefit has long been a goal in immunology, especially in cancer treatment, but […]

Chiral polymeric membranes: Recent applications and trends Abstract: The development and marked growth of chiral compounds is primarily due to the increased demand for pharmaceutical applications, but it has been also extended to other sectors […]

Chemical contamination in coastal areas alters shape, resistance and composition of carnivorous gastropod shells Abstract: Morphological, structural and compositional alterations in shells of molluscs have been proposed as putative biomarkers of chemical contamination in coastal […]

Strain-induced multigap superconductivity in electrene Mo2N: a first principles study Abstract: Superconductivity in low dimensional materials and 2D electrides are topics of great interest with possible applications in next generation electronic devices. Using density functional […]

Antifungal Activity and Biocompatibility of α-AgVO3, α-Ag2WO4, and β-Ag2MoO4 Using a Three-Dimensional Coculture Model of the Oral Mucosa Abstract: Fungal infections have become a major concern in the medical community, especially those caused by Candida […]

The Role of Residual Contaminants and Recycling Steps on Rheological Properties of Recycled Polypropylene Abstract: Recycling of polymers is one of the alternatives to reduce the impact of polymers presence on the environmental. However, the […]

Facile deposition of NiFe-LDH ultrathin film on pyrolytic graphite sheet for oxygen evolution reaction in alkaline electrolyte Abstract: NiFe-layered doubly hydroxide (LDH) is one of the most active materials for hydroxyl oxidation in an alkaline […]

Pro-angiogenic approach for skeletal muscle regeneration Abstract: The angiogenesis process is a phenomenon in which numerous molecules participate in the stimulation of the new vessels’ formation from pre-existing vessels. Angiogenesis is a crucial step in […]

Solution chemistry back-contact FTO/hematite interface engineering for efficient photocatalytic water oxidation Abstract: This work describes a simple yet powerful scalable solution chemistry strategy to create back-contact rich interfaces between substrates such as commercial transparent conducting […]

Biomimetic Growth of Metal–Organic Frameworks for the Stabilization of the Dentin Matrix and Control of Collagenolysis Abstract: The dentin matrix is a collagenous scaffold structurally involved in anchoring resin-based materials to the tooth. Time-dependent degradation […]

Current trending and beyond for solar-driven water splitting reaction on WO3 photoanodes Abstract: This review shows the importance of WO3 photoanode as a potentially low-cost, efficient, stable, and photoactive material for light-driven water splitting. For […]

Bridging experiment and theory: Morphology, optical, electronic, and magnetic properties of MnWO4 Abstract: Manganese tungstate (MnWO4) compounds have gathered tremendous interest in the research community due to their wide range of applications. Herein, we show […]

Electrical transport mechanisms of Neodymium-doped rare-earth semiconductors Abstract: This study reports the electrical properties of Nd-doped cerium oxide (CeO2) films synthesized by microwave assisted hydrothermal using a two-point probe technique. Positron annihilation lifetime spectroscopy studies […]

In vitro evaluation of the influence of bone cortical thickness on the primary stability of conventional- and short-sized implants Abstract: Background: The aim of this in vitro study was to evaluate the influence of the […]

Efficient Ni and Fe doping process in ZnO with enhanced photocatalytic activity: A theoretical and experimental investigation Abstract: Zn1-xNixO and Zn1-xFexO structures were synthesized by the microwave-assisted hydrothermal method. The best photocatalytic degradation of rhodamine […]

Effects of α-Ag2WO4 crystals on photosynthetic efficiency and biomolecule composition of the algae Raphidocelis subcapitata Abstract: The α-Ag2WO4 (hexagonal rod-shaped) is a multifunctional material with interesting physical and chemical properties, such as good electronic, photocatalytic, […]

One-step preparation of Co2V2O7: synthesis and application as a Fenton-like catalyst in a gas diffusion electrode Abstract: Bimetallic oxides and MOFs have been used as catalysts for the ORR via two-electron and Fenton-based processes. This […]

Ideal dopant to increase charge separation efficiency in hematite photoanodes: germanium Abstract: Hematite, owing to its ideal physical properties, chemical stability, and abundance on Earth, has become a potential candidate as a photoanode in solar […]

Mapping the electronic structure of polypyrrole with image-based electrochemical scanning tunneling spectroscopy Abstract: Conducting polymers are semiconductors whose applications cover a wide range of devices. Their versatility is due, in addition to other factors, to […]

Nickel-modified polymeric carbon nitride for improving TiO2-based photoanode: photoelectrocatalytical evaluation and mechanistical insights Abstract: Here, we report for the first time the synthesis of a TiO2-based photoanode containing nickel-modified poly (heptazine imide) (Ni–PHI), a polymeric […]

Electrocatalytic Reduction of CO2 in Water by a Palladium-Containing Metallopolymer Abstract: The palladium–salen complex was immobilized by electropolymerization onto a Pt disc electrode and applied as an electrocatalyst for the reduction of CO2 in an […]

Amorphous calcium phosphate nanoparticles allow fingerprint detection via self-activated luminescence Abstract: Herein, stable activator-free photoluminescent nanoparticles based on amorphous calcium phosphate (ACP) were obtained for the first time, and their performance for latent fingerprint imaging […]

Modified Titanium Dioxide as a Potential Visible-Light-Activated Photosensitizer for Bladder Cancer Treatment Abstract: Low oxygen concentration inside the tumor micro-environment represents a major barrier for photodynamic therapy of many malignant tumors, especially urothelial bladder cancer. […]

A Theoretical Study on the Structural, Electronic, and Magnetic Properties of Bimetallic Pt13−nNin (N = 0, 3, 6, 9, 13) Nanoclusters to Unveil the Catalytic Mechanisms for the Water-Gas Shift Reaction Abstract: In this work, […]

Inactivation of SARS-CoV-2 by a chitosan/α-Ag2WO4 composite generated by femtosecond laser irradiation Abstract: In the current COVID-19 pandemic, the next generation of innovative materials with enhanced anti-SARS-CoV-2 activity is urgently needed to prevent the spread […]

Phase control and optimization of photocatalytical properties of samarium doped TiO2 synthesized by coupled ultraviolet and microwave radiations Abstract: The scientific community has been looking for strategies to synthesize active catalysts under Ultraviolet_Visible (UV_Vis) light […]

Exploring where science is made in an outdoor and digital museum in a Brazilian university Abstract: In conventional science museums, where collections are at the centre of activities, large financial contributions and staff are required, […]

Tape-casting and freeze-drying gadolinia-doped ceria composite membranes for carbon dioxide permeation Abstract: Porous ceria: 20 mol% gadolinia (20GDC) ceramic membranes were prepared by tape casting (TC) and freeze-drying (FD) techniques, obtaining ceramic matrices with randomly […]

Amorphous Calcium Phosphate Nanoparticles Allow Fingerprint Detection via Self-Activated Luminescence Abstract: In this work, stable activators-free photoluminescent nanoparticles based on amorphous calcium phosphate (ACP) were obtained for the first time, and their performance for latent […]

CFD simulation and experimental comparison of bubble-induced convection during electrochemical water splitting Abstract: The behavior of gas bubbles produced during electrochemical processes is of large interest because of the increase in cell overpotential induced by […]

Investigation of the influence of the void fraction on the energy consumption of a vertical electrolyser under natural convection Abstract: The ongoing need to develop and enhance current energy sources to replace fossil fuels emphasizes […]

Chiral phonons in microcrystals and nanofibrils of biomolecules Abstract: Chiral phonons are concerted mirror-symmetric movements of atomic groups connected by covalent and intermolecular bonds. Such lattice vibrations in crystals of biomolecules should be highly specific […]

Improved Photoelectrochemical Hydrogen Gas Generation on Sb2S3 Films Modified with an Earth-Abundant MoSx Co-Catalyst Abstract: Antimony(III) sulfide (Sb2S3) has recently emerged as an outstanding potential photoelectrode due to its superlative optoelectronic properties for light-driven water […]

Polarization-sensitive optoionic membranes from chiral plasmonic nanoparticles Abstract: Optoelectronic effects differentiating absorption of right and left circularly polarized photons in thin films of chiral materials are typically prohibitively small for their direct photocurrent observation. Chiral […]

Synthesis and defect characterization of hybrid ceria nanostructures as a possible novel therapeutic material towards COVID-19 mitigation Abstract: This study reports the synthesis of hybrid nanostructures composed of cerium dioxide and microcrystalline cellulose prepared by […]

The Substrate Morphology Effect for Sulfur-Rich Amorphous Molybdenum Sulfide for Electrochemical Hydrogen Evolution Reaction Abstract: Amorphous molybdenum sulfide (MoSx) is a promising material for hydrogen evolution reaction (HER) due to its nearly zero hydrogen adsorption […]

Boosting the Photocurrent of the WO3/BiVO4 Heterojunction by Photoelectrodeposition of the Oxy-Hydroxide-Phosphates Based on Co, Fe, or Ni Abstract: Here we investigated the photoelectrodeposition of oxygen-evolving catalysts (OECs) based on oxy-hydroxides-phosphates of Co, Fe, or […]

Visualization of the Final Stage of Sintering in Nanoceramics with Atomic Resolution Abstract: The deep understanding of the sintering mechanism is pivotal to optimizing denser ceramics production. Although several models explain the sintering satisfactorily on […]

Light-assisted ozone gas-sensing performance of SnO2 nanoparticles: Experimental and theoretical insights Abstract: We report herein an investigation on the ozone gas-sensing performance at room temperature of SnO2 nanoparticles assisted by a light-emitting diode. X-ray diffraction and […]

All-solution processed CuGaS2-based photoelectrodes for CO2 reduction Abstract: Considering the influence of carbon dioxide (CO2) on global warming, an all-solution approach is presented here to fabricate nanocrystalline film of the ternary chalcopyrite for the photoelectrochemical […]

Interface matters: Design of an efficient α-Ag2WO4/Ag3PO4 photocatalyst Abstract: Heterojunction engineering of complex metal oxides is an active area of research that addresses fundamental questions in solid-state systems with broad technological applications. In this work, […]

Pure and Ni2O3-decorated CeO2 nanoparticles applied as CO gas sensor: Experimental and theoretical insights Abstract: In the present work, the structural, morphological and electrical properties of CeO2 nanoparticles with spherical and rod-like morphologies and rods […]

Single-walled silicon nanotube as an exceptional candidate to eliminate SARS-CoV-2: a theoretical study Abstract: In this work, computational chemistry methods were used to study a silicon nanotube (Si192H16) as possible virucidal activity against SARS-CoV-2. This […]

Toxicity of α-Ag2WO4 microcrystals to freshwater microalga Raphidocelis subcapitata at cellular and population levels Abstract: Silver-based materials have microbicidal action, photocatalytic activity and electronic properties. The increase in manufacturing and consumption of these compounds, given […]

Waveguides fabrication by femtosecond laser in Tb3+/Yb3+ doped CaLiBO glasses Abstract: Borate glasses present the ability to host various modifier ions and, therefore, are adaptable for a wide range of applications. Specifically, calcium-lithium tetraborate (CaLiBO) […]

A Perspective of the COVID‑19 Pandemic in the Plastic WasteManagement and Cooperatives of Waste Pickers in Brazil Abstract: Brazil is the fourth largest producer of plastic waste in the world. Among all the challenges the […]

Manganese oxides synthesized via microwave-assisted hydrothermal method: phase evolution and structure refinement Abstract: Manganese oxides were synthesized during 40 min at 140 ºC via Microwave-Assisted Hydrothermal (MAH) method and treated at different temperatures in order […]

Tailoring Bi2MoO6 by Eu3+ incorporation for enhanced photoluminescence emissions Abstract: Here, an experimental study is presented on the structural, electronic, and optical properties of Bi2-xMoO6:xEu3+ (x = 0, 0.5, 1.0, 2.0, and 4.0 mol%) materials, synthesized by means of the microwave-assisted solvothermal method using ethylene […]

Synthesis and multiferroic properties of particulate composites resulting from combined size effects of the magnetic and ferroelectric phases Abstract:  The effect of grain size was not fully explored in composites containing ferroelectric and magnetic phases […]

Enhanced photocatalytic activity of CaMoO4/g-C3N4 composites obtained via sonochemistry synthesis Abstract: Herein, CaMoO4-based g-C3N4 composites are successfully synthesized by the sonochemistry method. All samples present photocatalytic activity under UV-light irradiation by employing methylene blue (MB). […]

Unveiling the shape-selective CoCr2-yScyO4 nanomagnetism Abstract: In this study CoCr2-yScyO4 (y = 0, 0.01, 0.02, and 0.03) nanoparticles (NPs) have been synthesized following the solution combustion method and characterized by combining experimental techniques with high-throughput […]

A diagnosis approach for semiconductor properties evaluation from ab initio calculations: Ag-based materials investigation Abstract: Ag-based semiconductors have been extensively employed as photocatalysts for several decades due to their excellent electronic properties, photochemical properties, and […]