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无机材料学报

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Fe2O3/TiO2和ZnO/TiO3纳米颗粒薄膜的亲水性能和光催化性能的研究

姜洪波; 高濂; 张青红   

  1. 中国科学院上海硅酸盐研究所高性能陶瓷与超微结构国家重点实验室 上海 200050
  • 收稿日期:2002-01-21 修回日期:2002-02-28 出版日期:2003-05-20 网络出版日期:2003-05-20

Preparation and Properties of Fe2O3/TiO2 and ZnO/TiO2 Nanosized Particulate Thin Films

JIANG Hong-Bo; GAO Lian; ZHANG Qing-Hong   

  1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure; Shanghai Institute of Ceramics; Chinese Academy of Sciences Shanghai 200050; China
  • Received:2002-01-21 Revised:2002-02-28 Published:2003-05-20 Online:2003-05-20

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摘要： 采用溶胶-凝胶法在玻璃上制备了锐钛矿型TiO2和过渡金属铁、锌离子掺杂的TiO2薄膜,并通过XRD、XPS、AFM表征了合成的薄膜。结果表明铁和锌离子掺入后,TiO2薄膜变的更加致密。铁离子和锌离子分别以Fe2O3和ZnO的形式存在,在紫外光照射下,TiO2薄膜表现明显的亲水性,金属离子掺杂的TiO2薄膜,亲水性能明显增强,铁离子掺入对光催化降解甲基橙有一定的抑制作用;少量的锌离子掺入对光催化降解甲基橙有促进作用,锌离子掺入量增大后,效果并不明显。

关键词: 溶胶-凝胶法, 亲水性, 光催化, 金属离子掺杂, TiO2

Abstract: Transparent TiO2 thin film and Fe2O3/ TiO2 and ZnO/ TiO2 thin films were prepared by sol-gel methods on the soda lime glass substrates. The
results of AFM show that the addition of Fe and Zn ions can suppress the grain growth of TiO2 thin films. The changes of the hydrophilicity of the films
under the UV illumination were investigated. The pure TiO2 thin film can be entirely wetted by water after UV illumination for 5h and shows good hydrophilicity.
The hydrophilicity of TiO2 thin films increases with increase in Fe/Zn ions doped. The photocatalytic activities of TiO2 films in photodegradation of methylene
orange solution decrease with increase in Fe ions doped but increase with increase in small amount of Zn ions doped.

Key words: sol-gel method, hydrophilicity, photocatalyticity, metal dopants, TiO2

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