水溶液中十二烷基苯磺酸钠的半导体光催化降解的研究  

Semiconductor Photocatalytic Degradation of Anionic Sodium Dodecylbenzenesulphonate in Aqueous Solutions

作　　者：蒋伟川[1] 王琪全[1] 

机构地区：[1]浙江大学化学系

出　　处：《环境科学》1994年第6期1-3,共3页Environmental Science

基　　金：国家自然科学基金

摘　　要：以ＴｉＯ２为催化剂，以３００Ｗ高压汞灯为光源，对水溶液中的十二烷基苯磺酸钠（ＤＢＳ）进行了半导体光催化降解，研究了不同ｐＨ条件下金红石型和锐钛型ＴｉＯ２的光催化活性及Ｈ２Ｏ２、Ｃｕ２＋的加入对降解的影响。结果表明，锐钛型ＴｉＯ２具有较高的催化活性；Ｈ２Ｏ２在碱性条件下能抑制ＤＢＳ的光催化降解，在无ＴｉＯ２时，Ｈ２Ｏ２．对ＤＢＳ有光催化氧化作用；在酸性条件下，Ｃｕ２＋对ＤＢＳ的ＴｉＯ２光催化降解有较强的助催化作用。Anionic sodium dodecylbenienesulphonate (DBS) can be photodegradated in aqueous suspension of TiO2 powder by irradiation with a 300W high pressure mercury lamp. The photocatalytic ability of anatuse and rutile TiO2 in the solutions at different PH values has been studied. The effects of adding H2O2 and Cu2+ on the photodegradation have also been discussed. The results show that anatase TiO 2has a more efficiently catalytic ability than rutile TiO2. H2O2 can reduce the rate of degradation in a basic solution. Cu2+ can increase the rate of degradation in an acidic solution.

关 键 词：半导体 光催化 DBS 水溶液 降解 废水处理 

分 类 号：X783.03[环境科学与工程—环境工程]