硅钼酸@石墨烯复合膜修饰电极及电化学行为  

Silicomolybdate/Graphene Composite Film Modified Electrode and Its Electrocatalytic Performance

作　　者：郭伟华[1,2] 杨国强[2] 黄德娟[2] 刘云海[1,2] GUO Wei-hua YANG Guo-qiang HUANG De-juan LIU Yun-hai(State Key Laboratory Breeding Base of Nuclear Resources and Environment, East China University of Technology, Nanchang, JX 330013, China Chemistry, Biological and Materials Sciences Department, East China University of Technology, Nanchang, JX 330013, China)

机构地区：[1]东华理工大学核资源与环境省部共建国家重点实验室培育基地,江西南昌330013 [2]东华理工大学化学生物与材料科学学院,江西南昌330013

出　　处：《东华理工大学学报（自然科学版）》2016年第4期379-385,共7页Journal of East China University of Technology(Natural Science)

基　　金：国家自然科学基金(21401022);博士科研启动基金项目(DHBK1007);东华理工大学核资源与环境重点实验室开放基金项目NRE1511)

摘　　要：以氧化石墨烯(GO)和硅钼杂多酸(SiMo_(12))为原料,用一步电沉积法构筑SiMo_(12)@ERGO复合膜修饰的氧化铟锡(ITO)电极。采用扫描电镜和X-射线光电子能谱研究了电极的表面形貌和成分,通过循环伏安法对修饰电极的电化学性能进行了研究,并将构筑的修饰电极应用于亚硝酸根和抗坏血酸的测定。结果表明,与空白ITO和分步沉积法得到SiMo12/ERGO修饰电极相比,该方法得到的复合膜电极上SiMo_(12)的负载量高,稳定性良好,同时对抗坏血酸具有良好的电催化能力。A nanocomposite film modified Indium tin oxide （ITO） electrode based on graphene oxide （GO） and silicomolybdenum heteropoly acid （SiMo12） was fabricated by one-step electrodeposition. SEM and XPS were used to characterize the surface morphology and chemical composition of the as-prepared modified electrode. Suc- cessful formation and the electrochemical behavior of SiMo12@ ERGO modified electrode were confirmed by cyclic voltammetry. In comparison with the SiMo12/ITO and SiMO12/ERGO/ITO, the SiMo12@ ERGO/ITO has the high- est peak current for the redox of SiMo12. The SiMo12@ ERGO modified electrode exhibited high electrocatalytic ac- tivities toward the oxidation of Ascorbic acid.

关 键 词：硅钼杂多酸 氧化石墨烯 一步电沉积 电催化 

分 类 号：O646[理学—物理化学]