Influence of Cu Dopants on Structure and Properties of Nanpsized TiO2 Particulate Film
铜离子掺杂对TiO2纳米颗粒膜结构和性能的影响

Transparent TiO2 thin film and Cu-doped TiO2 thin film were prepared by the sol-gel method on the soda lime glass substrates. The change of hydrophilicity of the films under UV illumination was investigated. The results of XRD, UV-VIS, XPS and AFM show that Cu ions are in the form of Cu2O. The addition of Cu ions can suppress the grain growth of crystals in the Ti02 thin film. Pure TiO2 thin film can be entirely wetted by water after UV illumination for 5h and shows good hydrophilicity. The hydrophilicity of TiO2 will decrease with increasing amount of Cu dopants.