【摘要】 采用溶胶-凝胶法制备了TiO₂/SnO₂复合薄膜,通过XRD、XPS、UV透射光谱的分析及薄膜表面接触角、光催化降解甲基橙等的分析,研究了SnO₂与TiO₂配比、热处理温度、膜厚度等因素对复合膜的亲水性、透光率及光催化活性的影响.结果表明:复合膜的亲水性和光催化活性均优于单纯TiO₂,当SnO₂与TiO₂的摩尔比为1％～5％时,所制备的薄膜具有超亲水特性;热处理温度为450℃时薄膜亲水性最好,膜厚度的增加有利于亲水性的改善.更多还原

【Abstract】 TiO2/SnO2 composite thin films were prepared on soda-lime glass with the sol-gel method. The influence of SnO2 doping concentration, heat-treatment temperature and film thickness on the super-hydrophilicity and photocatalytic activity of the composite films was studied by XRD, XPS, UV-spectra, measuring the contact angle and the degradation of methyl orange. The results indicate that the doping of SnO2 into TiO2 can improve their hydrophilicity and photocatalytic activity, and the composite film with 1%-5% SnO2 and heat-treated at 450℃ is of super-hydrophilicity. The optimal SnO2 concentration for the photocatalytic activity is 10% and larger film thickness is helpful to reduce the contact angle of the composite films.更多还原