中文摘要：

以典型抗生素类药物磺胺甲[口恶]唑（SMZ）为目标物，模拟太阳光下研究其在磷钨酸／二氧化钛（H3PW12O40／TiO2）复合膜上的光催化降解行为，并对其可能的降解机理进行探讨．通过一系列的条件实验确定H3PW12O40／TiO2复合膜光催化降解SMZ的最佳实验条件为：H3PW12O40／TiO2掺杂量为7．7％、污染物初始浓度为50mg·L^-1、溶液pH值为5．5．此时，H3PW12O40／TiO2复合膜表现出最强的光催化活性，其动力学常数为0．453h^-1，为纯TiO2膜的3．0倍；模拟太阳光照射12h后，复合膜对SMZ的矿化度可达66．6％，是纯TiO2膜的1．25倍．

英文摘要：

Photocatalytic degradation of sulfamethoxazole （SMZ）, a typical antibiotic, was performed using phosphotungstic acid/titanium dioxide （H3PW12O40/TiO2 ） composite film under simulated sunlight irradiation. The possible degradation mechanism was also discussed. Based on a series of experiments, the optimum conditions for SMZ degradation were determined as： H3PW12O40/TiO2 loading amount of 7.7%, initial SMZ concentration of 50 mg· L-1, and the solution pH of 5.5. Under this optimal condition, the kinetic constant of SMZ degradation using H3PW12O40/TiO2 was 0. 453 h-1, which was 3 times as large as that using pristine TiO2. After 12 h of illumination, SMZ mineralization was 66.6%, which was 1.25 times as large as that using TiO2.