Now showing items 1-10 of 525
Estudo computacional das interações entre nanopartículas de dióxido de titânio envolvidas no processo de coalescência orientada
(Universidade Federal de São CarlosUFSCarPrograma de Pós-graduação em QuímicaCâmpus São Carlos, 2018-04-03)
Experimental and theoretical studies have shown that the aggregation of TiO2 anatase nanoparticles (NPs) occurs with preferential crystallographic orientation by the so-called oriented attachment mechanism (OA). The growth ...
Study of rutile-supported anatase nanostructured films as photocatalysts for the degradation of water contaminants
(Universidade Federal de São CarlosUFSCarPrograma de Pós-graduação em Ciência e Engenharia de MateriaisCâmpus São Carlos, 2015-03-30)
This dissertation studies the application of rutile substrate as an alternative support for anatase films, specifically, on the growth and properties of anatase films. The films were utilized as catalysts for the ...
Efeito do Nb e do Sn na transição anatase-rutilo em nanotubos de TiO2 em ligas de Ti biocompatíveisEffect of Nb and Sn on anatase-rutile transition in TiO2 nanotubes on biocompatible Ti alloys : Effect of Nb and Sn on anatase-rutile transition in TiO2 nanotubes on biocompatible Ti alloys
Quantification of phase content in TiO2 thin films by Raman spectroscopy
(Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C., 2014)
Influence of substrate on the structure of predominantly anatase TiO2 films grown by reactive sputtering
TiO2 films are grown on LaAlO3 (001), Si (100) and SiO2 substrates by reactive radio frequency sputtering. X-ray diffraction (XRD) pole figures revealed important characteristics about the texture and phase distribution ...
Low Temperature Synthesis of Several Titanium Dioxide Solid Solutions through the Sol-Gel Method
(Univ Federal Mato Grosso Sul, Dept Quimica, 2018-01-01)
Titanium dioxide powders constituted by anatase single phase are very useful to understand several properties of that semiconductor applied as photocatalyst material. In addition, the reconstructive transformation involved ...
Superficial phisycochemical of anatase (TiO2) in the process of ultraflotationFisicoquímica superficial de la anatasa (TiO2) en el proceso de ultraflotación
(Pereira : Universidad Tecnológica de Pereira, 2008)
La determinación de la energía libre superficial de un sólido y sus componentes polares y apolares permite analizar sistemas basados en fenómenos superficiales como la ultraflotación de minerales. Este trabajo presenta el ...
Raman and XRD study on brookite-anatase coexistence in cathodic electrosynthesized titania
Among the many methods developed for the synthesis of titanium dioxide, cathodic electrosynthesis has not received much attention because the resulting amorphous oxy-hydroxide matrix demands a further thermal annealing ...
Phonon confinement model to measure the average sizes of anatase nanoparticles synthesized by a solvothermal method using H2O2
(Sociedade Brasileira de Química, 2013-06-01)
In this work, crystalline titanium dioxide (TiO2) nanoparticles with variable average crystallite sizes (e.g., 8 nm) and surface areas (e.g., 192 m² g-1) were synthesized in pure anatase phase using H2O2 to reduce the ...
N3-Dye-Induced Visible Laser Anatase-to-Rutile Phase Transition on Mesoporous TiO(2) Films
(AMER CHEMICAL SOC, 2011)
Titanium dioxide has been extensively used in photocatalysis and dye-sensitized solar cells, where control of the anatase-to-rutile phase transformation may allow the realization of more efficient devices exploiting the ...