Fe^(3+)/SO_4^(2-)/TiO_2光催化氧化苯酚研究  

Research into Fe^(3+)/SO_4^(2-)/TiO_2 photocatalytic oxidation phenol

作　　者：杨莉[1] 吴光辉[1] 张文杰[1] 

机构地区：[1]南昌航空工业学院环境与化学工程系,江西南昌330034

出　　处：《南昌航空工业学院学报》2005年第3期46-49,84,共5页Journal of Nanchang Institute of Aeronautical Technology（Natural Science Edition）

摘　　要：采用溶胶-凝胶法制备Fe3+/SO42-/TiO2光催化剂,以紫外光为光源,研究不同实验条件下对苯酚的光催化氧化。结果表明:催化剂投加量以2~3 g/L为最佳范围;pH=6.7~9.0时苯酚去除率较高;溶液初始浓度越高,CODcr去除率越低;H2O2质量浓度为90 mg/L时,光催化效果达到最佳;Cr6+浓度为8μg/mL时CODcr去除率达到最大,Cr6+的还原率达90%以上;Hg2+对CODcr去除率没有较大的影响,Hg2+的还原率99.5%。Fe^3＋/SO4^2-/TiO2 photoeatalyst was prepared by sol - gel method with the ultraviolet light as light source. The various experimental conditions for photocatalytic oxidation of phenol were studied. The results were as follows： the optimum mass of catalyst was 2 - 3 g/L; when pH=6.7 -9.0, the phenol removal efficiency was very high; the CODcr removal efficiency decreased with the increase of initial concentration; when the mass concentration of H2O2 was 90 mg,/L, photocatalytie effect was optimum; the CODcr removal effieieney was best at the concentration of Cr^6＋ = 8 μg/mL, the reduction efficiency of Cr^6＋ was 90% ; Hg^2＋ had no great influence on the CODcr removal efficiency; the reduction efficiency of Hg^2＋ ＋ was 99.5 %.

关 键 词：光催化氧化 苯酚 H2O2 CR^6+ HG^2+ 

分 类 号：X793[环境科学与工程—环境工程]