氨基-β-环糊精-石墨烯-二茂铁修饰电极对多巴胺的电化学行为研究  

Determination of dopamine via amino-β-cyclodextrin/graphene/ferrocene composite film modified glassy carbon electrodes

作　　者：毛燕妮[1] 刘淑娟[1] 廖桢葳[1] 马建国[1] 

机构地区：[1]东华理工大学核资源与环境教育部重点实验室,江西抚州344000

出　　处：《功能材料》2012年第8期976-979,共4页Journal of Functional Materials

基　　金：江西省自然科学基金资助项目(2010GZH0011);江西省教育厅资助项目(GJJ11488)

摘　　要：利用制备的氨基-β-环糊精-石墨烯-二茂铁(β-CD-NH2/GNs/Fc)复合膜修饰电极,研究了多巴胺(DA)的电化学行为。结果表明,该复合膜修饰电极在pH值=7.00的磷酸盐缓冲溶液(PBS)中对DA有良好的电催化性能,DA的氧化峰电流在0.1～100μmol/L浓度范围内呈良好的线性关系,检出限为8.5×10-8mol/L。结果表明该修饰电极具有较高的检测灵敏度,可用于实际样品的检测。Amino-β-cyclodextrin/graphene/ferrocene（β-CD-NH2/GNs/Fc）eomposite film modified glassy carbon electrode had been prepared by using drop coated method. Then it was used to investigate the electrochemical behaviors of dopamine（DA）. In pH=7.00 phosphate buffer solution （PBS）, the results showed that good linear relationship between the concentration of DA and the oxidation peak current in the range of 0.1-100μmol/L, the detection limit of samples was 8.5×10^-8mol/L. Furthermore the modified electrode indicated a higher sen-sitivity and stability in determination, which can be further used to detect real samples.

关 键 词：石墨烯 氨基-β-环糊精 二茂铁 多巴胺 电化学 

分 类 号：TQ151[化学工程—电化学工业]