铜修饰微弧氧化二氧化钛网电极三维光电催化研究  

Study on Photoelectrocatalytic Technology of Three-dimensional Electrode Using Micro-arc Oxidation TiO_2/Ti Electrode Modified With Copper

作　　者：张思宇[1] 孙若一 李莹雪[1] 王璐璐[1] 苏会东[1] 

机构地区：[1]沈阳理工大学环境与化学工程学院,辽宁沈阳110159

出　　处：《当代化工》2015年第5期916-918,共3页Contemporary Chemical Industry

基　　金：辽宁省大学生创新创业训练计划项目;项目号:201310144014

摘　　要：实验采用微弧氧化技术制备了负载Cu2+的二氧化钛/钛(TiO2/Ti)网电极,考察了微弧氧化电解液浓度、光电催化电解质初始浓度、电解间距、外加电压对亚甲基蓝三维光电催化的脱色情况。结果表明,在6g/L的Na3PO4溶液中微弧氧化5min制备TiO2/Ti网电极的光催化效果最高达到25.3%;采用微弧氧化负载Cu2+法修饰TiO2/Ti网电极,当电解液中Cu2+的浓度为0.01mol/L,微弧氧化时间7min时制备的负载Cu2+的TiO2/Ti网电极,在三维光电催化体系为5mg/L的亚甲基蓝,0.01mol/L的硫酸钠溶液,1.5cm的电解间距,3.0V的外加电压以及pH为5的情况下,光电催化对亚甲基蓝的脱色率达到46.2%。The net electrode of （TiO2/Ti） loaded Cu^2＋ was prepared by micro-arc oxidation. Effect of the micro-arc oxidation electrolyte concentration, photoelectrocatalysis electrolyte concentration and initial photoelectric catalytic electrolysis spacing, applied voltage on the three-dimensional photoelectrocatalytic decolorization of methylene blue was investigated. The results show that photocatalytic effect of titanium mesh prepared by micro-arc oxidation in 6 g/L Na3PO4 solution for 5 min is the best, can reach to 25.3%; after titanium mesh electrode is modified by Cu^2＋ with micro-arc oxidation method under the conditions of 0.01 mol /L Cu^2＋ and 7 min micro-arc oxidation time, methylene blue decolorization rate of the three-dimensional photoelectric catalytic system can reach to 46.2% when methylene blue is 5 mg/L, sodium sulfate solution is 0.01 mol/L, electrolytic distance is 1.5 cm, applied voltage is 3 V and pH is 5.

关 键 词：微弧氧化 铜掺杂 三维光电催化 

分 类 号：O643.32[理学—物理化学] TQ032[理学—化学]