Electrocatalytic Oxidation of Dopamine at Graphene Modified Glass Carbon Electrode

被引：4
|
作者：
Dang Guoju [1 ]
Wang Miao [1 ]
Wang Zhaoqing [1 ]
Li Haiyan [1 ]
Zhang Quansheng [1 ]
机构：
[1] Shanghai Inst Technol, Sch Chem & Environm Engn, Shanghai 201418, Peoples R China
来源：
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE | 2014年 / 35卷 / 12期
关键词：
Graphene; Glass carbon electrode; Dopamine(DA); Electrocatalytic oxidation; ELECTROCHEMICAL REDUCTION; OXIDE; ACID; NANOTUBES; CHEMISTRY; DYNAMICS;
D O I：
10.7503/cjcu20140277
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The graphene oxide(GO) bonded on glass carbon electrode(GCE) using 3-mercaptopropyol trimethoxysilane( METMS) as molecular bridge were electrochemically reduced to reduced graphene oxide(rGO) to form graphene modified glass carbon electrode(rGO-METMS-GCE). GO-METMS-GCE and rGO-METMS-GCE were characterized by SEM, FTIR, Raman spectroscopy and AFM. The electrochemical performances of rGO-METMS-GCE were studied by cyclic voltammetry(CV) and differential voltammetry(DPV). The results show that the electrocatalytic oxidation current of dopamine(DA) on rGO-METMS-GCE is about 4 times that on bare GCE. The oxidation and reduction potential difference(Delta E-p) of rGO-METMS-GCE is 66 mV, lower than that of bare GCE (202 mV). The rGO-METMS-GCE has remarkable electrocatalytic activity toward dopa mine oxidation and the redox reversibility of dopamine on the rGO-METMS-GCE is improved greatly.
引用
收藏
页码：2680 / 2687
页数：8
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