微波辐射制备Bi_(2)O_(3)/NiF光阳极及模拟日光下光电催化氧化降解罗丹明B  

Preparation of Bi_(2)O_(3)/NiF photoelectrode with microwave irradiation and efficient photoelectrocatalytic degradation of RhB under simulated sunlight

作　　者：徐浩 高博 张留科 史焕鑫 邢玉鲁 赵璇 马丙瑞 赵宝秀[1] XU Hao;GAO Bo;ZHANG Liu-ke;SHI Huan-xin;XING Yu-lu;ZHAO Xuan;MA Bing-rui;ZHAO Bao-xiu(School of Environmental and Municipal Engineering,Qingdao University of Technology,Qingdao 266525,China;School of Materials Science and Engineering,Jilin Jianzhu University,Changchun 130119,China)

机构地区：[1]青岛理工大学环境与市政工程学院,山东青岛266525 [2]吉林建筑大学材料科学与工程学院,吉林长春130119

出　　处：《中国环境科学》2024年第1期150-157,共8页China Environmental Science

基　　金：国家自然科学基金资助项目(52174336,20709026);山东省自然科学基金资助项(ZR2019MEE097,ZR2020ME256,ZR2021MB051)。

摘　　要：针对粉体Bi_(2)O_(3)光催化剂光利用效率低及难回收再利用等技术问题,采用浸渍—微波辐射技术在泡沫镍(NiF)上负载Bi_(2)O_(3)来制备Bi_(2)O_(3)/NiF光阳极,并借助SEM,XRD,XPS等手段及电化学工作站分析方法研究了光阳极的形貌结构及光电催化氧化性能.结果显示,花簇状的Bi_(2)O_(3)成功地负载在NiF的三维骨架上,Bi_(2)O_(3)/NiF具有优异的光电转化效率.在最佳制备条件,当光电流密度为15µA/cm^(2),外加电压为2V、RhB初始浓度为8mg/L、pH值为3的条件下,Bi_(2)O_(3)/NiF光电催化氧化降解罗丹明B(RhB)的效率可达95.35%,Bi_(2)O_(3)/NiF光电催化氧化降解RhB符合一级反应动力学方程,自由基淬灭实验证实h+在Bi_(2)O_(3)/NiF光电催化氧化降解RhB过程中起着主要作用.In order to solve the problems of low light utilization efficiency and difficult recovery and reuse of powder Bi_(2)O_(3)photocatalyst,Bi_(2)O_(3)/NiF electrode was prepared with impregnation-microwave radiation hybrid technology,and its characterizations such as SEM,XRD,XPS and electrochemical properties were used to analyze the morphology,chemical structure and photoelectrocatalytic performance.Experimental results displayed that the flower-shaped Bi_(2)O_(3)was successfully loaded on the surface of three-dimensional framework NiF,and it exhibited excellent photoelectric conversion efficiency.Photoelectrocatalytic degradation efficiency was about 95.35%when the photocurrent density was 15µA/cm^(2),initial voltage was 2V,RhB concentration was 8mg/L and pH value was 3.Bi_(2)O_(3)/NiF photoelectrocatalytic degradation of RhB fitted well with the first-order reaction kinetics.Furthermore,the free radical trapping test confirmed that h+played a major role in the process of Bi_(2)O_(3)/NiF photoelectrocatalytic degradation of RhB.

关 键 词：罗丹明B 光电催化氧化 泡沫镍 氧化铋 高级氧化 

分 类 号：X703[环境科学与工程—环境工程]