负载型二氧化钛光电催化降解苯酚废水的反应动力学  

KINETIC STUDY ON PHOTOELECTROCATALYTIC DEGRADATION OF PHENOL BY USING SUPPORTED TiO_2 AS CATALYST

作　　者：颜晓莉[1] 史惠祥[1] 雷乐成[1] 汪大翚[1] 

机构地区：[1]浙江大学环境工程系,浙江杭州310027

出　　处：《磁流体发电情报》2004年第3期426-433,共8页

基　　金：国家自然科学基金资助项目 (No 2 0 1760 5 3 )~~

摘　　要：采用浸渍提拉法制备发泡镍载二氧化钛薄膜电极 ,并以其为工作电极 ,建立三电极光电催化体系 ,对该体系降解苯酚的动力学进行了研究 .考察了反应液初始pH值、反应物初始浓度、催化剂用量、光辐照强度、外加直流偏压值对光电催化反应速率的影响 ,采用幂指数方程描述反应动力学 ,得到方程C =C0 exp( - 0 5 4 30C-0 42 410 E0 2 968Q0 5418I0 5877t) .方程计算值与实验值吻合较好 ,误差基本在 15 %以内 .TiO 2 thin film electrodes were prepared by dip-coating technique. Using the porous nickel based TiO 2 thin film electrode as working electrode, the photoelectrocatalytic system with three kinds of electrodes (working electrode, counter electrode and reference electrode)was built.The effects of pH, initial phenol concentration, quantity of catalyst, intensity of incident light, voltage of electrical bias applied on the photoelectrocatalytic reaction rate of phenol were investigated. The global kinetics wa...

关 键 词：废水处理 苯酚废水 反应动力学 负载型二氧化钛 光电催化 降解 

分 类 号：X703[环境科学与工程—环境工程]