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Titanium dioxide nanoparticles obtained by sol gel method: Effect of the catalyst acids
(Instituto Peruano de Energía Nuclear, 2010-11)
Titanium dioxide nanoparticles have been obtained by sol-gel process. Titanium isopropoxide was hydrolized in acidic medium at pH values between 0.5 and 1. The hydrolysis was catalyzed with HCl, HNO3 or HClO4, and studied ...
Degradación fotocatalítica de fenol con nano-partículas de óxido de titanio soportadas en una matriz de polidimetil-siloxano
(Lima (Perú), 2004-08)
En este trabajo se reporta la fijación y actividad fotocatalítica de nano-partículas de óxido de titanio (TiO2) soportadas en polidimetil-siloxano (silicona). Las pastillas de TiO2 – silicona (polidimetil-siloxano) han ...
Synthesis and characterization of rough electrochromic phosphotungstic acid films obtained by spray-gel process
(Lima (Perú), 2003-07)
Rough electrochromic phosphotungstic acid (PWA) films were fabricated by spraying a gel of phosphotungstate anions with a molar ratio of P:W = 1:12 onto glass substrates precoated with transparent and electrically conducting ...
The influence of the ethanol/water molar ratio in the precursor solution on morphology and photocatalytic activity of pyrolytic ZnO films
(Lima (Perú), 2005-08)
Zinc oxide films were fabricated by a home made spray pyrolysis system equipped with an optical set-up ensuring the in-situ control of the film growth. 0.1 M of zinc acetate diluted in a mixture of ethanol and water was ...
Highly porous thin films obtained by spray-gel technique
(Lima (Perú), 2004-08)
Combining the spray pyrolysis and the sol-gel techniques (spray-gel) gives the possibility to produce very rough and highly diffuse films, under appropriate conditions. This technique is suitable for producing multifunctional ...
Spray pyrolysis deposited zinc oxide films for photo-electrocatalytic degradation of methyl orange: influence of the pH
(Lima (Perú), 2003-07)
Zinc oxide films were made by spray pyrolysis equipped with an optical system for in-situ thickness measurement; zinc acetate water solution was used as spraying solution. The pH of the spraying solution was modified in ...
Highly porous tungsten-oxide-based films obtained by spray-gel for gas sensing applications
(Lima (Perú), 2005-08)
Highly porous mixed WO3–SnO2 films have been prepared from an aqueous solution of SnCl4.5H2O and polytungsten gel with a molar ratio of Sn/W from 0 to 1. These solutions were sprayed on to alumina substrates at 220 ºC. The ...