中文摘要：

采用光电组合法同时实现了罗丹明B的氧化降解和Cu^2＋的回收。TiO2／Ti薄膜电极作为光电催化阳极，光电催化产生的氧化剂可有效氧化罗丹明B；不锈钢作为光电催化反应阴极，游离的Cu^2＋在阴极得到电子被还原沉积回收。针对5mg／L罗丹明B和0．2mmol／L Cu^2＋的混合体系，光电催化氧化技术、光催化氧化与电化学氧化过程对罗丹明B的去除率分别为80％、50％、40％，对Cu“的回收率分别为78％、8％、60％，可见光电组合具有良好的协同作用。光电组合处理罗丹明B和Cu^2＋的最佳pH值为3．5、电流密度应控制在0．3～0．6mA／Cm^2。研究结果显示光电催化技术可作为罗丹明B和Cu^2＋混合废水的一种处理方法。

英文摘要：

Photoelectrocatalytic oxidation was used to treat simulated wastewater containing rhoda- mine B and Cu2＋ ions. TiO2/Ti thin film was used as the photoanode which produced strong oxidant to oxidize rhodamine B under UV light irradiation. Stainless steel was used as photocathode on which Cu^2＋ ions were reduced and recovered by electrodeposition. The removal rates of rhodamine B were 80% , 50% and 40% , and the recovery rates of Cu^2＋ were 78% , 8% and 60% when the wastewater containing 5 mg/L rhodamine B and 0.2 mmol/L Cu^2＋ was treated by photoelectroncatalytic oxidation, photocatalyt- ic oxidation and electrochemical oxidation, respectively. The optimum pH of photoelectroncatalytic oxida- tion was 3.5, and the current density should be controlled between 0.3 and 0.6 mA/cm2. Photoelectron- catalytic oxidation technology is an effective method to treat rhodamine B and Cu2＋ ions mixed wastewater.