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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

TiO2/SnO2复合薄膜的亲水性能研究

柳清菊1; 杨喜昆2; 刘强1; 王宝玲1; 吴兴惠1   

  1. 1. 云南大学材料科学与工程系; 2. 云南省分析测试中心, 昆明 650091
  • 收稿日期:2002-08-30 修回日期:2002-11-21 出版日期:2003-11-20 网络出版日期:2003-11-20

Super-hydrophilicity of TiO2/SnO2 Composite Film

LIU Qing-Ju1; YANG Xi-Kun2; LIU Qiang1; WANG Bao-Ling1; WU Xing-Hui1   

  1. 1. Department of Material Science & Engineering; Yunnan University; Kunming 650091; China; 2. Yunnna Analysis Test Center; Kunming 650091, China
  • Received:2002-08-30 Revised:2002-11-21 Published:2003-11-20 Online:2003-11-20

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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.

关键词: TiO2/SnO2复合膜, 溶胶-凝胶法, 亲水性, 光催化

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.

Key words: TiO2/SnO2 composite film, sol-gel, photocatalytic activity, contact angle

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