石墨棒负载ZnWO_4薄膜电极光电催化性能研究  

Preparation and Photocatalytic Activity of ZnWO_4 Films Electrode Supported Graphite Rod

作　　者：谢文菊[1] 王志涛[1] 吴方棣[1] 

机构地区：[1]武夷学院生态与资源工程学院,福建武夷山354300

出　　处：《武夷学院学报》2016年第3期76-80,共5页Journal of Wuyi University

基　　金：武夷学院校级青年项目(XQ201301);福建省教育厅JK项目(JK2014052)

摘　　要：利用溶胶-浸渍提拉法制备了高温石墨棒负载ZnWO_4薄膜电极。利用红外光谱和循环伏安测试等手段对催化剂和电极进行表征。以亚甲基蓝为目标降解产物,研究了电极对亚甲基蓝的光电催化作用,并讨论了外加电压以及负载膜层数对亚甲基蓝去除率的影响。实验结果表明:石墨棒负载ZnWO_4薄膜电极具有明显的光电催化活性,能够在175 W高压汞灯下有效地除去溶液中的亚甲基蓝。当外加电压为2V,负载4层薄膜,0.5 mol/L K_2SO_4溶液中光电催化降解2h,10 mg/L亚甲基蓝的去除率可达到61.16%。The film electrode of ZnWO4 loaded on high temperature graphite rod was prepared by Sol-gel reaction and dip-coating method. The film electrode were characterized by FIRT and cyclic voltermetry（ CV）. The influence of impressed voltage and number of coating layers on the removal efficiency of methylene blue were investigated. The experimental results showed that the photoelectrocatalytic removal efficiency of 10 mg/L methylene blue can reach 61.16 % under 175 W lamp irradiation for 120 min, and using graphite rod sup-ported 4 coating layers ZnWO4 film as working electrode, 0.5 mol/L K2SO4 as supporting electrolyte with 2 V impressed voltage.

关 键 词：浸渍-提拉法 ZnWO4薄膜 光电催化 亚甲基蓝 

分 类 号：TB332[一般工业技术—材料科学与工程]