摘要
采用溶胶-凝胶法和自制膜提拉装置制备了TiO2薄膜光催化剂。以结晶紫为模型反应物,通过自行设计的光催化反应器对制备的TiO2薄膜光催化剂性能进行了评价,研究了提拉次数、焙烧温度、溶液pH值以及H2O2投加量对光催化活性的影响。实验结果表明,经500℃焙烧120min、拉膜3次的TiO2薄膜光催化剂具有最佳的光催化活性,在pH7.0~8.0、适量H2O2存在下可获得最佳降解效果。
TiO2 film photocatalyst on glass fibre gauze was prepared by using solgel method and the autopromoteed film device. With the crystal violet as the model reactant,the prepared TiO2 film photocatalytic properties were evaluated with the selfdesign photocatalytic reactor. The effects of promoted time, calcining temperature, pH value of the solution and the concentration of H2O2 on the photocatalytic activity of TiO2 film were studied.The experiment results indicate that the best photocatalytic activity could be obtained when the TiO2 film was calcined for 3 times at 500℃ for 120 min,and that the best degradation effect could be obtained in the case of pH 7.0~8.0 and the existence of rightamount of H2O2.
出处
《西安理工大学学报》
CAS
2003年第3期265-268,共4页
Journal of Xi'an University of Technology