过硫酸盐辅助改性TiO₂光催化剂处理不同水体中抗生素的研究

Study on the Treatment of Antibiotics in Different Water by Persulfate Assisted Modified TiO₂ Photocatalyst

摘要: 抗生素排放到自然环境中，会对人体健康产生直接或间接的危害。光催化是一种温和的高级氧化还原技术，能较好地处理水体中的污染物。但复杂的水环境中存在的杂质会对光催化剂处理污染物产生一定的影响。本文使用改性的光催化剂对实际水体进行净化模拟测试，利用PMS (过硫酸盐)消除水体中对光催化剂产生负面影响的复杂组分。研究发现，在光照条件下100 mL的25 mg/L CIP (环丙沙星)城市废水(MW)中，添加0.7 g/L PMS及0.3 g/L FTF/FTA (Fe³⁺掺杂TiO₂和Ag修饰的TiO₂复合光催化剂)时，具有最佳的降解效果。

Abstract: The release of antibiotics into the natural environment can be harmful to human health directly or indirectly. Photocatalysis is a mild advanced redox technology that can better treat pollutants in water bodies. However, the impurities present in the complex water environment can have an impact on the treatment of pollutants by photocatalysts. In this paper, a modified photocatalyst was used to simulate the purification of real water, and PMS (persulfate) was used to remove complex components in water that negatively affect the photocatalyst. It was found that the best degradation effect was achieved when 0.7 g/L PMS and 0.3 g/L FTF/FTA (Fe³⁺-doped TiO₂ and Ag-modified TiO₂ composite photocatalyst) were added to 100 mL of 25 mg/L CIP (ciprofloxacin) municipal wastewater (MW) under light conditions.