多酸/Ag-Cu合金纳米粒子/TiO_(2)三元复合膜电极的制备及光电性能的研究  

Preparation and photoelectric performance of ternary nanocomposite electrode polyoxometalate/Ag-Cu alloy nanocomposites/TiO_(2)

作　　者：王立皓 王舒媛 唐乾[2,3] 曹洪玉[2,3] 郑学仿[2,3] WANG Li-hao;WANG Shu-yuan;TANG Qian;CAO Hong-yu;ZHENG Xue-fang(College of Environmental and Chemical Engineering,Dalian University,Dalian 116622,China;College of Life Science and Technology,Dalian University,Dalian116622,China;Bioorganic Chemistry Key Laboratory,Dalian University,Dalian 116622,China)

机构地区：[1]大连大学环境与化学工程学院,辽宁大连116622 [2]大连大学生命科学与技术学院,辽宁大连116622 [3]大连大学,辽宁省生物有机化学重点实验室,辽宁大连116622

出　　处：《化学研究与应用》2022年第7期1538-1545,共8页Chemical Research and Application

基　　金：国家自然科学基金项目(21601023,21601024,21601025)资助;辽宁省大连市青年科技之星项目(2018RQ63)资助;大连大学科研平台项目重点项目(202101ZD01)。

摘　　要：本文将Ag-Cu合金纳米粒子、Dawson型结构多酸K_(6)[P_(2)W_(18)O_(62)]·14H_(2)O(简写为P_(2)W_(18))同时引入到TiO_(2)薄膜体系中,采用交替沉积自组装法成功制备了P_(2)W_(18)/Ag-Cu/TiO_(2)三元复合膜电极,并通过光电流-时间曲线和光电流-光电压曲线等测试考察了复合膜电极的光电性能。实验结果表明,P_(2)W_(18)/Ag-Cu/TiO_(2)复合膜电极相较于TiO_(2)电极、Ag-Cu/TiO_(2)电极和P_(2)W_(18)/TiO_(2)电极具有更高的光电流响应和光电转换效率。同时,P_(2)W_(18)/Ag-Cu/TiO_(2)三元复合膜电极还展现出更好的对生物小分子乳酸的光电催化活性。In this paper,Ag-Cu alloy nanoparticles and Dawson-type polyoxometalate K_(6)[P_(2)W_(18)O_(62)]·14H_(2)O(abbr.as P_(2)W_(18))were introduced into the film system of TiO_(2).P_(2)W_(18)/Ag-Cu/TiO_(2) ternary composite membrane electrode was successfully prepared by the layer-by-layer self-assembly method,and the photoelectric properties of composite film photoanodes were investigated by transient photocurrent and current-voltage curves measurements.The experimental results indicate that P_(2)W_(18)/Ag-Cu/TiO_(2) film have better photocurrent response and higher photoelectric conversion efficiency than only TiO_(2) film,Ag-Cu/TiO_(2) film and P_(2)W_(18)/TiO_(2) film.At the same time,the P_(2)W_(18)/Ag-Cu/TiO_(2) film exhibited significant photoelectrocatalytic oxidation activity of lactic acid.

关 键 词：多酸 二氧化钛 Ag-Cu合金纳米粒子 光电性能 复合膜 

分 类 号：O611[理学—无机化学]