日光下黄砂负载TiO_2降解邻氯苯酚水溶液

Immobilization of titanium dioxide on sand to degrade o-chlorophenol in aqueous solution under sunlight

研究了以黄砂为载体，ＴｉＯ_２为催化剂，以太阳光为光源对邻氯苯酚水溶液进行光催化降解的可行性。结果表明，锐钛型ＴｉＯ_２对邻氯苯酚有显著的光催化降解作用； ＴｉＯ_２的催化活性在焙烧温度３００℃时最高。此外还探讨了ｐＨ值、ＴｉＯ_２的附着量、邻氯苯酚溶液浓度等因素对光催化反应的影响。

The photocatalytic degradation and oxidation of aqueous o-chlorophenol solution had been studied under sunlight in simulating shallow ponds. The photocatalyst was titanium dioxide immobilized on sand. It showed that o-chlorophenlo was remarkably photolized under the condition of the experiment. The influence of parameters, such as initial concentration, pH of o-chlorphenol solution, the quantity titania for adhesion and the volume of o-chlorophenol solution, had been studied.