水溶液中十二烷基苯磺酸钠的半导体光催化降解的研究

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进行了半导体光催化降解，研究不同ｐＨ条件下金红石型和锐钛型ＴｉＯ２的光催化活性及Ｈ２Ｏ２，Ｃｕ＾２＋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，Ｃｕ＾２＋对ＤＢＳ的ＴｉＯ２光催化降解有较强的助催化

Semiconductor Photocatalytic Degradation of Anionic Sodium Dodecylbenzenesulphonate in Aqueous Solutions

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.