石墨烯和铁氰化镍复合物的制备及对多巴胺的电催化性能研究  

Preparation of nickel hexacyanoferrate/graphene composites and its electrocatalytic performance for dopamine

作　　者：陈体伟[1] 余小娜[1] 刘洁琼[1] 林琼[1] 

机构地区：[1]许昌学院化学化工学院河南省微纳米能量储存与转换材料重点实验室,许昌461000

出　　处：《分析试验室》2015年第3期311-314,共4页Chinese Journal of Analysis Laboratory

基　　金：河南省教育厅重点项目(14B150012);许昌市科技局项目(1404015)资助

摘　　要：采用化学合成法制备了铁氰化镍纳米颗粒,并将其与热还原石墨烯机械混合从而合成了铁氰化镍-石墨烯复合材料。在扫描电镜和透射电镜上对合成的复合材料进行形貌结构表征。利用循环伏安和计时电流测试技术对石墨烯复合物的电化学性能进行了探讨。复合物修饰电极对多巴胺具有优异的电催化活性。在较宽的浓度区间,多巴胺的响应电流与多巴胺浓度呈较好的线性关系。该电极材料有望用作多巴胺等药物小分子的灵敏检测。Chemical precipitation method was used to synthesize nickel hexacyanoferrate. Then graphene-nickel hexacyanoferrate composite material was synthetized by using mechanical mixing technique. Field emission scanning electron microscopy（ FESEM） was used to characterize the morphology and structure of thermally reduced graphene and graphene-nickel hexacyanoferrate complex. Finally,the electrocatalytic performance of graphene-nickel hexacyanoferrate composite material towards the oxidation of dopamine（ DA） was explored.Experimental results indicated the composite modified electrode showed excellent catalytic activity for DA. In optimum testing conditions,there is a good linear relationship between oxidation peak current and concentration of DA,and a low dectection limit. Ni HCF / graphene material is likely to be used as a sense substrate material for the detection of dopamine.

关 键 词：热还原石墨烯 铁氰化镍 多巴胺 修饰电极 电催化 

分 类 号：O657.1[理学—分析化学]