光电催化降解10-壬基酚聚氧乙烯醚.pdfVIP

中国环境科学 2005,25(3) 380~384 China Environmental Science 光电催化降解10-壬基酚聚氧乙烯醚 1* 2 2 1 1 1 程沧沧 ,邓南圣 ,吴 峰 ,万 昆,周菊香 ,胡德文 (1.江汉大学化学与环境工程学院,湖北 武汉 430056 2.武汉大学资源与环境学院,湖北 武汉 430072) 摘要 采用溶胶-凝胶法制备TiO2 薄膜光电极,以该电极为工作电极,铂丝作对电极,饱和甘汞电极为参比电极,对 10-壬基酚聚氧乙烯醚的光 电催化降解进行了研究.结果表明,该电极具有n 型半导体的特征行为.在外加偏压为+0.6V,pH 值为5, H O 浓度为30mg/L 的条件下对初始浓 2 2 度为50mg/L 的10-壬基酚聚氧乙烯醚溶液光照4h,降解率达53.26%.讨论了氧的存在 外加偏压 pH 值等因素对光电催化反应的影响. 关键词 光电催化 TiO /Ti 电极 壬基酚聚氧乙烯醚(NP EO) 2 n 中图分类号 X783 文献标识码 A 文章编号 1000-6293(2005)03-0380-05 1* 2 Photoelectrocatalytic degradation of 10-nonylphenol ethoxylates. CHENG Cang-cang , DENG Nan-sheng , WU 2 1 1 1 Feng , WAN Kun , ZHOU Ju-xiang , HU De-wen (1.School of Chemistry and Environmental Engineering, Jianghan University, Wuhan 430056, China 2.School of Resources and Environment, Wuhan University, Wuhan 430072, China). China Environmental Science, 2005,25(3) 380~384 Abstract TiO thin membrane photoelectrode prepared adopting sol-gel method was used as the working electrode with 2 Pt wire as the counter electrode, and saturated calomel electrode as the reference electrode to study the photoelectrocataly tic degradation of 10-nonylphenol ethoxylates. This working electrode possessed characteristic behavior of n type semiconductor. Under the condition of external bias potential +0.6V pH=5 and H O of 30mg/L and 4h 2 2 irradiation, the rate of degradation of non