Graphene quantum dots modified glassy carbon electrode via electrostatic self-assembly strategy and its application

被引：48
作者：
Jian, Xuan [1 ]
Liu, Xian [1 ]
Yang, Hui-min [1 ]
Guo, Min-min [1 ]
Song, Xiu-li [1 ]
Dai, Hong-yan [1 ]
Liang, Zhen-hai [1 ]
机构：
[1] Taiyuan Univ Technol, Coll Chem & Chem Engn, Taiyuan 030024, Shanxi, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2016年 / 190卷
基金：
中国国家自然科学基金;
关键词：
Graphene quantum dots; electrostatic self-assembly strategy; electrochemical sensing; hydroquinone; catechol; COMPOSITE FILM; ELECTROCHEMICAL DETERMINATION; SENSING PLATFORM; REDUCED GRAPHENE; IONIC LIQUID; HYDROQUINONE; CATECHOL; RESORCINOL; OXIDE; SENSOR;
D O I：
10.1016/j.electacta.2016.01.045
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
An electrostatic self-assembly strategy for the preparation of graphene quantum dots (GQDs) attached to the surface of a glassy carbon electrode (GCE) has been developed. The GQDs were prepared by tuning the carbonization degree of citric acid and characterized by atomic force microscopy, transmission electron microscopy, Raman spectroscopy and UV-vis absorption spectroscopy. In addition, the electrochemical behaviours of hydroquinone (HQ) and catechol (CC) on the resulting modified electrodes were investigated. Under optimum conditions, the as-prepared GQDs modified electrode exhibited high electrochemical activity and good selectivity for the oxidation of HQand CC, the linear ranges for HQand CC were 4.0 similar to 600 mu M and 6.0 similar to 400 mu M respectively, and the detection limit was 0.40 mu M and 0.75 mu M, respectively. The modified electrode was also applied for the detection of real samples with satisfactory results. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：455 / 462
页数：8
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