Amperometric sensing of hydroquinone using a glassy carbon electrode modified with a composite consisting of graphene and molybdenum disulfide

被引：28
作者：
Huang, Huayu [1 ,2 ]
Zhang, Jiangyi [1 ,2 ]
Cheng, Meimei [1 ,2 ]
Liu, Kunping [3 ]
Wang, Xingyu [1 ,2 ]
机构：
[1] Northwest Univ, Coll Urban & Environm Sci, Xian 710127, Shaanxi, Peoples R China
[2] Northwest Univ, Shaanxi Key Lab Earth Surface Syst & Environm Car, Xian 710127, Shaanxi, Peoples R China
[3] Chengdu Univ, Sichuan Ind Inst Antibiot, Sichuan Educ Dept, Key Lab Med & Edible Plants Resources Dev, Chengdu 610052, Sichuan, Peoples R China
来源：
MICROCHIMICA ACTA | 2017年 / 184卷 / 12期
关键词：
Solvothermal method; Electrochemical sensor; Differential pulse voltammetry; Dihydroxybenzene; GOLD NANOPARTICLES; REDUCED GRAPHENE; OXIDE NANOCOMPOSITE; PASTE ELECTRODE; CATECHOL; NANOTUBES; RESORCINOL; REDUCTION; SENSORS; GREEN;
D O I：
10.1007/s00604-017-2531-6
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Well-dispersed composites of graphene and molybdenum disulfide were synthesized without using a mediator. The composites were characterized by scanning electron microscopy, transmission electron microscopy and X-ray diffraction. The electrochemical properties of a glassy carbon electrode (GCE) modified with the graphene/MoS2 composite were investigated by electrochemical impedance spectroscopy and cyclic voltammetry. Hydroquinone was selected as a model target to show the sensing capability of the modified GCE. The GCE, best operated at a working voltage of 0.10 V (vs. Ag/AgCl), exhibits excellent catalytic activity towards hydroquinone, with a linear response in the 0.5 to 300 mu M concentration range and a 37 nM detection limit (at an S/N ratio of 3). The superior performance of the GCE is attributed to the synergistic effects of graphene and MoS2.
引用
收藏
页码：4803 / 4808
页数：6
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