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

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．

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

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.