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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Type of acid and ageing effect influence on photocatalytic activity of TiO2 thin films

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Author(s):
Liana Key Okada Nakamura [1] ; Jorge Moreira Vaz [2]
Total Authors: 2
Affiliation:
[1] Instituto de Pesquisas Energéticas e Nucleares. Centro de Química e Meio Ambiente - Brasil
[2] Instituto de Pesquisas Energéticas e Nucleares. Centro de Química e Meio Ambiente - Brasil
Total Affiliations: 2
Document type: Journal article
Source: Química Nova; v. 34, n. 7, p. 1173-1176, 2011-00-00.
Abstract

TiO2 thin films were prepared by the sol-gel method using different acids (HCl and HAc), with a parallel evaluation of the gel ageing effects on the film properties. After the thermal treatments, the resulting materials were characterized through gravimetric analysis, UV-VIS spectrophotometry (from which optical parameters such as band gap was derived), XRD, morphological surface analysis (AFM) and photocatalytic activity. The majority of the obtained thin films parameters were similar independent of the acid type and the ageing time of the gel. Nevertheless, a visible effect of the surface morphology properties on the films and their photocatalytic activity was observed. (AU)