This study adopts sol-gel method, with tetrabutyl titanate as the titanium source, anhydrous ethanol as the solvent, glacial acetic acid as inhibitor, to prepare nano-TiO2 photocatalyst. The effects of distilled water, glacial acetic acid and anhydrous ethanol on the nano-TiO2 photocatalyst activity are investigated through the evaluation system of photocatalytic degradation of methyl orange solution, according to the raw materials of the different experiments and the preparation methods as well as the process. The results show that the emergence rate can reach more than 95% with V(tetrabutyl titanate):V(glacial acetic acid):V(distilled water):V(anhydrous ethanol)=2:1.2:8:36, and it is the best preparation condition of nano-TiO2 under the experimental conditions.%采用溶胶-凝胶法以钛酸四丁酯为钛源、无水乙醇为溶剂、冰醋酸为抑制剂来制备纳米TiO2光催化剂,通过光催化降解甲基橙水溶液评价体系,根据需要改变实验所用的原料、制备方法和工艺过程,考察蒸馏水、冰醋酸、无水乙醇各因素量对制备的纳米TiO2催化活性的影响.结果表明当V(钛酸四丁酯):V(冰醋酸):V(蒸馏水):V(无水乙醇)=2∶1.2∶8∶36,脱出率可达到95％以上,为实验条件下纳米TiO2的最佳制备工艺条件.
展开▼
