负载型TiO_2光电催化降解酸性红B  

Photoelectrocatalytic degradation of acidic red B with titanium dioxide catalyst

作　　者：林治顺[1] 潘湛昌[1] 彭康华[1] 肖楚民[1] 张环华[1] 

机构地区：[1]广东工业大学轻工化工学院,广东广州510006

出　　处：《工业水处理》2008年第3期23-26,共4页Industrial Water Treatment

基　　金：广东省科技计划项目(2004B10301010;2006B36702004)

摘　　要：用泡沫镍负载TiO_2制作的电极作为工作电极,铂电极为对电极,饱和甘汞电极为参比电极,建立三电极的光电催化体系,以酸性红B(ARB)为研究对象,考察了该光电催化体系对有机物的降解性能。实验结果表明,在室温(29℃)条件下,外加电压0.05 V、溶液pH=4.0时,紫外光照120 min降解率可达85.5%;动力学研究表明,该反应为一级反应,其活化能为32.75 KJ/mol;降解前后溶液的紫外-可见吸收光谱表明,ARB得到了破坏,基本分解成小分子物质。Using the immobilized TiO2 thin film electrode deposited on porous nickel as working electrode,Pt as the counter electrode and saturated calomel electrode as the reference electrode, the photoelectrocatalytic（PEC） system has been built. The system is used for degrading acidic red B （ARB） in aqueous solution. The results show that under the conditions of external bias potential 0.05 V,pH=4.0 and 120 min ultraviolet irradiation at UV-vis spectra analysis of the aqueous solution in the process of degradation show that the ARB has been demolished and degraded into substances with small molecules.

关 键 词：光电催化 酸性红B TIO2 降解 

分 类 号：X703.1[环境科学与工程—环境工程]