摘要
采用溶胶-凝胶(sol-gel)技术以工业偏钛酸为原料,载玻片为基体制备纳米TiO2薄膜。分别用紫外光辐射、微波辐射及热辐射(马福炉)对TiO2进行处理,研究了不同处理方式对纳米TiO2薄膜微结构参数的影响及结构参数与降解甲基橙光催化性能的关系。X射线衍射(XRD)研究说明三种处理方式得到在基片上具有面择优取向的TiO2薄膜,其中热辐射为晶体膜,紫外光及微波为非晶膜。光催化实验结果为热辐射TiO2薄膜活性最好,微波辐射及紫外光辐射其次,但差异较小(3％),微波及紫外光辐射处理温度约100℃,尤其适用于低温材料基质,表明新的辐射方式可替代传统的热处理。
Nanometer TiO2 thin films were fabricated on glass substrates from metatitanic acid with sol-gel technology. The prepared films were treated with UV light, microwave or heat irradiation, respectively. The microstructure parameters of the films were investigated by thin-film X-ray diffraction (TF-XRD). The results showed that the films treated by heat irradiation are crystalline anatase, and the other films are amorphous anatase. All films were orientated on glass slide with [101] of anatase. The results demonstrated that the degradation effect of films treated by heat irradiation is better than that of the others. Low temperature of microwave or UV light irradiation makes suitable for the substrates not to tolerate high temperature, which indicated that the microwave or UV light irradiation can replace the traditional heat method.
出处
《化学反应工程与工艺》
CAS
CSCD
北大核心
2004年第4期338-342,共5页
Chemical Reaction Engineering and Technology
