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Avaliação da atividade catalítica de óxidos cerâmicos na conversão de óleos vegetais
(Universidade Federal de São Carlos, 2011-02-04)
Organic pollutants are one of the major problems related to water and environmental pollution. Nowadays, vegetable oils represent a considerable source for water contamination. The search for new strategies to provide an ...
Filmes finos de LaNiO3 depositados sobre substratos monocristalinos pelo método dos precursores poliméricos.
(Universidade Federal de São Carlos, 2004-08-06)
This work reports a systematic study on the deposition and characterization of LaNiO3 thin
films. This material is a ceramic conductor and presents a near metallic behavior, and is interesting for capacitor electrodes ...
Desenvolvimento de nanocamadas e nanocristais de Óxido de Zircônio aplicados a catálise
(Universidade Federal de São Carlos, 2007-09-14)
This work investigate the synthesis and characterization of a catalytic support of -alumina with a nanolayers and nanocrystals of ZrO2. The incorporation of the platinum began during and after the formation of the ...
Método solvotérmico assistido por micro-ondas aplicado à obtenção de nanocristais de ITO : deposição e caracterização de filmes de ITO
(Universidade Federal de São Carlos, 2012-02-17)
The formation of In1-xSnxO2 (ITO) nanocrystals through the conversion of radiant energy into heat has been studied by using an adapted domestic microwave oven. The formation of powder was obtained by heating the oven to ...
Uso da modelagem molecular na solução de problemas em química
(Universidade Federal de São Carlos, 2014-08-29)
The studies presented herein show the use of molecular modelling coupled to spectroscopic data to tackle four different problems in organic chemistry. In the first study, the sulfonylation of the primary hydroxyl group of ...
Desenvolvimento e estudo da estabilidade de nanoemulsões do tipo óleo em água com óleos vegetais
(Universidade Federal de São Carlos, 2011-10-11)
A low energy emulsification method was used to prepare o/w emulsions of sweet almond or Brazil nut oils stabilized by Tween 80 and Span 80. Stable nano emulsions with droplet size of 160 nm and 270 nm were obtained for ...
Síntese, caracterização e testes eletroquímicos de dióxido de manganês nanométrico como material de eletrodo de supercapacitores
(Universidade Federal de São Carlos, 2018-08-01)
Manganese dioxide was synthesized by a microwave-hydrothermal method using alternative, unprecedented and completely soluble reagents. For such, potassium permanganate and acetone were dissolved in different proportions ...
Desenvolvimento de célula hidrotérmica para obtenção de compostos nanocristalinos de alta pureza
(Universidade Federal de São Carlos, 2008-01-31)
Due to the growing advances obtained in nanomaterials science, almost all technological sectors have invested in nanotechnology. It is expected technological improvements in a wide range of products, from the most conventional ...
Estudo da Influência do Sm e Er em Cerâmicas de PbTiO3.
(Universidade Federal de São Carlos, 2005-04-29)
In this work, it was obtained powders and thin films of (Pb1-xLnx)TiO3, Ln = Sm and Er, using a chemical method of synthesis, polymeric precursor method (Pechini). In this
way, the synthesis conditions were optimized in ...
Dióxido de estanho nanoestruturado dopado com terras raras como catalisador e sensor de gases.
(Universidade Federal de São Carlos, 2004-02-10)
This work presents and discusses results of the effects of doping on rare earth-doped nanosize SnO2, obtained using the polymeric precursor method and prepared at different annealing temperatures. Only the cassiterite phase ...