期刊
MATERIALS RESEARCH BULLETIN
卷 37, 期 14, 页码 2255-2262出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0025-5408(02)00972-8
关键词
composites; thin films; catalytic properties; surface properties
SnO2-TiO2 composite thin films were fabricated on soda-lime glass with sol-gel technology. By measuring the contact angle of the film surface and the degradation of methyl orange, we studied the influence of SnO2 doping concentration, heat-treatment temperature and film thickness on the super-hydrophilicity and photocatalytic activity of the composite films. The results indicate that the doping of SnO2 into TiO2 can improve their hydrophilicity and photocatalytic activity, and the composite film with 1-5 mol% SnO2 and heat-treated at 450degreesC is of super-hydrophilicity. The optimal SnO2 Concentration for the photocatalytic activity is 10 mol% and larger film thickness is helpful to reduce the contact angle of the composite films. (C) 2002 Elsevier Science Ltd. All rights reserved.
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