二氧化钛多孔薄膜对含氯苯酚的电助光催化降解  

ELECTROCHEMICALLY ASSISTED PHOTOCATALYTIC DEGRADATION OF CHLOROPHENOLS USING TiO 2 MICROPOROUS FILM

作　　者：戴清[1] 郭妍 袁春伟[1] 奚荣彪[2] 林保平[2] 

机构地区：[1]东南大学分子与生物分子电子学开放实验室,南京210096 [2]东南大学化学化工系,南京210096

出　　处：《催化学报》1999年第3期317-320,共4页

基　　金：国家自然科学基金;国家博士后科学基金

摘　　要：用涂膜 法制备 了具有多 孔微结构 的二 氧化 钛薄 膜电 极． 以制 得的 电极 为工 作电 极， 建立了三电 极的电 助光催化 体系． 选择含 氯苯酚（４氯苯 酚， ２ ， ４ ， ６三氯 苯酚） 作 为降 解对 象，进 行光催化研 究． 实 验结果 表明： 外加电极 偏压可 抑制光生 电子空穴 的复 合，提 高二 氧化 钛的 光催 化效率； 光强越强 ，降解速TiO 2 thin film electrodes with microporous structure were prepared by film coating. Using the TiO 2 thin film electrode as working electrode, the electrochemically assisted photocatalytic system that had three kinds of electrodes (working electrode, reference electrode and counter electrode) was built. Selecting 4 chlorophenol (4 CP) and 2,4,6 trichlorophenol (TCP) solution as substrates, the photocatalytic degradation was studied. The results indicated that the benzene ring of 4 CP and TCP had been destroyed. Application of the anodic bias can restrain the reposition of photogenerated electron and hole, thus improve the photocatalytic efficiency of TiO 2 particles. It was also showed that the stronger the light intensity is, the higher the degradation efficiency.

关 键 词：二氧化钛 氯苯酚 降解 废水处理 光催化剂 

分 类 号：X703[环境科学与工程—环境工程] O643.36[理学—物理化学]