Abstract: Magnetic separation can be considered a green technology because it is fast, efficient, consumes low energy, and minimizes the use of solvents and the generation of waste. It has been successfully used in laboratory scale to facilitate supported catalysts’ handling, separation, recovery, and recycling. Only few materials are intrisically magnetic, hence the application of magnetic materials as catalyst supports has broaden the use of magnetic separation. Iron oxides, silica-coated iron oxides, and carbon-coated-cobalt are among the most studied catalyst supports; however, other metal oxide coatings, such as ceria and titania, are also very interesting for application in catalysis. Here we report the preparation of magnetically recoverable magnetic supports containing silica, ceria, and titania. We found that the silica shell protects the iron oxide core and allows the crystalization of ceria and titania at high temperature without compromising the magnetic properties of the catalyst supports.
Author(s):Vono, Lucas L. R.; Damasceno, Camila C.; Matos, Jivaldo R.; et al.
O Laboratório Aberto de Interatividade para Disseminação do Conhecimento Científico e Tecnológico (LAbI), vinculado à Universidade Federal de São Carlos (UFSCar), é voltado à prática da divulgação científica pautada na interatividade; nas relações entre Ciência, Arte e Tecnologia.
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 […]
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 […]
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 […]