IrO_(2)对SnO_(2)-NiO-IrO_(2)/Ti电极组织与电化学性能的影响  

Effect of IrO_(2) on Structure and Electrochemical Performance of SnO_(2)-NiO-IrO_(2)/Ti Electrode

作　　者：黄少敏 庄建煌 邵艳群[3] 张燕斌 Huang Shaomin;Zhuang Jianhuang;Shao Yanqun;Zhang Yanbin(Fujian Electric Power Technical College,Quanzhou 362000,China;Putian Power Supply Company of State Grid Fujian Electric Power Co.,Ltd,Putian 351100,China;College of Materials Science and Engineering,Fuzhou University,Fuzhou 350116,China)

机构地区：[1]福建电力职业技术学院,福建泉州362000 [2]国网福建省电力有限公司莆田供电公司,福建莆田351100 [3]福州大学材料科学与工程学院,福建福州350116

出　　处：《稀有金属材料与工程》2022年第2期516-524,共9页Rare Metal Materials and Engineering

基　　金：福建省自然科学基金(2019J01230)。

摘　　要：因SnO_(2)-NiO特殊的异质结结构,被用作气敏材料和超级电容器电极添加材料,在电催化氧化污水方面研究较少。通过添加活性氧化物IrO_(2)提高其导电性来研究SnO_(2)-NiO-IrO_(2)电极电催化甲基橙溶液的效果。热分解法制备不同IrO_(2)含量的SnO_(2)-NiO-IrO_(2)/Ti电极,采用X射线衍射(XRD)、扫描电镜(SEM)、X射线光电子能谱(XPS)、比表面测试(BET)、循环伏安法(CV)、交流阻抗谱法(EIS)、极化曲线(LSV)、总有机碳分析(TOC)、紫外可见光谱(UV)、强化寿命等方法研究SnO_(2)-NiO-IrO_(2)/Ti电极的电催化性能。结果表明:添加IrO_(2)后涂层主要以金红石相氧化物存在。当IrO_(2)掺杂量为23.1mol%时,比表面积、总孔体积、伏安电荷达最大值,析氧电位、传荷电阻达最小值。此时电极对甲基橙具有最高降解率93%,电解反应累加时间最高可达678 h,具有最好的降解效果。Because of the special heterojunction structure,SnO_(2)-NiO has been used as gas sensing material and supercapacitor electrode addition material.But it has been studied less in electrocatalytic oxidation of industrial wastewater.The effect of SnO_(2)-NiO-IrO_(2)electrode on the electrocatalytic methyl orange solution was studied by adding active oxide IrO_(2).SnO_(2)-NiO-IrO_(2)/Ti electrodes were prepared by thermal decomposition method.SEM,XRD,XPS,BET,CV,EIS,LSV,TOC,UV,and strengthen life were used to test the microstructure and the catalytic performance.It is shown that the coatings mainly exist in the rutile-phase after adding IrO_(2).The specific surface area,total pore volume and volt-ampere charge reach the maximum and the oxygen evolution potential and charge transfer resistance reach the minimum value when the IrO_(2)content is about 23.1mol%.Thus,this electrode has the best degradation effect on methyl orange,which has a maximum degradation rate of 93%and a maximum service life of 678 h.

关 键 词：电催化氧化 IrO_(2)掺杂 SnO_(2)-NiO电极 甲基橙溶液 

分 类 号：TM531[电气工程—电器]