以钛酸四丁酯为原料,用溶胶-凝胶法制备了以膨润土为载体的负载型TiO2光催化剂;采用分光光度法测试其光降解性能;讨论了影响苯酚降解的主要因素。结果表明,在pH=8.0时,光催化剂的用量为15mg/L,苯酚溶液的浓度为5mg/L时,光照时间为120min,苯酚的降解率可达98.2%。 The tetrabutoxy titanate was used as raw material to prepare bentonite supported TiO2 photocatalyst by sol-gel method. The photodegradation performance was tested by spectrophotometry. The main factors affecting the degradation of phenol were discussed. The results showed that when pH = 8.0, the photocatalyst dosage was 15mg / L, the phenol solution concentration was 5mg / L, the illumination time was 120min, the degradation rate of phenol reached 98.2%.