摘要
采用热分解法制备了不同RuO_(2)掺杂量(0,9.1%,16.7%,23.1%,28.6%,物质的量分数)的Ti/SnO_(2)-NiO-RuO_(2)电极,研究了RuO_(2)掺杂量对Ti/SnO_(2)-NiO-RuO_(2)电极电催化降解性能的影响。结果表明:掺杂RuO_(2)可以增加Ti/SnO_(2)-NiO-RuO_(2)电极表面的吸附氧浓度、活性位点数量、离子价态种类,提高电极的比表面积、伏安电荷密度,促进电催化降解的进行,同时还能延长电极的强化寿命;RuO_(2)掺杂量为23.1%时,Ti/SnO_(2)-NiO-RuO_(2)电极对甲基橙的电催化降解速率最快,降解率最大,降解3 h后达到87%,较未掺杂RuO_(2)电极的提高了30%,该电极具有良好的电催化效果。
The Ti/SnO_(2)-NiO-RuO_(2)electrodes with different doping amounts(0,9.1%,16.7%,23.1%,28.6%,mole fraction)of RuO_(2)were prepared by thermal decomposition method.The effect of doping amount of RuO_(2)on the electrocatalytic degradation performance of the Ti/SnO_(2)-NiO-RuO_(2)electrodes was studied.The results show that doping RuO_(2)increased the concentration of adsorbed oxygen,the number of active sites and the kinds of valence states of ions on the surface of Ti/SnO_(2)-NiO-RuO_(2)electrode.Moreover,the specific surface area and voltammetric charge density of the electrode were improved,the electrocatalytic degradation was promoted,and the strengthening life of the electrode was prolonged.The Ti/SnO_(2)-NiO-RuO_(2)electrode had the fastest electrocatalytic degradation speed for methyl orange when the doping amount of RuO_(2)was 23.1%,and the degradation rate was the largest,reaching 87%after degradation for 3 h,which was 30%higher than that of the electrode undoped RuO_(2);the electrode had a good electrocatalytic effect.
作者
唐静宜
蔡毅雄
邵艳群
张燕斌
TANG Jingyi;CAI Yixiong;SHAO Yanqun;ZHANG Yanbin(College of Electrical Engineering and Automation,China Three Gorges University,Yichang 443002,China;Department of Materials Engineering,Zhicheng College,Fuzhou University,Fuzhou 350002,China;College of Materials Science and Engineering,Fuzhou University,Fuzhou 350116,China)
出处
《机械工程材料》
CAS
CSCD
北大核心
2021年第6期31-38,共8页
Materials For Mechanical Engineering
基金
福建省自然科学基金资助项目(2019J01230)。
