高效光电化学池的构建及机理研究  

CONSTRUCTION AND MECHANISM OF HIGH-EFFICIENCY PHOTO-ELECTROCHEMICAL CELL

作　　者：韩现英[1,2] 吴良专[1] 余愿[1] 只金芳[1] 

机构地区：[1]中国科学院理化技术研究所光电功能界面材料研究组,100190 [2]中国科学院大学,北京100049

出　　处：《水处理技术》2015年第2期32-36,共5页Technology of Water Treatment

基　　金：科技部国家国际科技合作专项(S2013GR0635)

摘　　要：将基于硼掺杂金刚石薄膜电极的电解池与基于分子筛负载二氧化钛的光催化池组合,构建了用于有机废水快速处理的高效光电化学池。通过考察电极电位、紫外光强度、溶液的pH、硫酸钠电解质浓度等参数对模拟废水酸性橙的降解效率与活性中间产物S2O82-含量的影响,证实所构建的光电化学池遵循SO42--S2O82--SO4-·-·OH转换机理。这种具有光电协同效应的高效光电化学池对酸性橙的降解效果明显优于电化学氧化及光催化简单的加合,可以将酸性橙完全矿化成CO2。A high-performance photo-electrochemical cell had been constructed mainly by boron-doped diamond （BDD） electrode and TiO2 loaded zeolite （zeolite-TiO2）,which could be used for treating organic wastewater fast. The factors such as electrode potential, UV irradiation, pH and content of sodium sulfate were investigated through detecting the degradation efficiency of Orange II and the content of the strongest oxidizing agents generated in the reaction system, which confirmed that the constructed photoelectron chemical cell followed the photoelectric conversion mechanism as SO2- -S2Os2- -SO4^＊-^＊OH. The photoelectrocatalytic degradation efficiency of Orange II in aqueous solution was better than that in the combination of electrochemical and a photocatalytic oxidation efficiency. Orange II could be nearly mineralized into CO2.

关 键 词：光电协同作用 电化学氧化 光催化 酸性橙 

分 类 号：X703.1[环境科学与工程—环境工程] O646.54[理学—物理化学]