Glassy carbon electrode modified with a film composed of Ni(II), quercetin and graphene for enzyme-less sensing of glucose

被引：20
|
作者：
Sun, Jun-Yong [1 ]
Huang, Ke-Jing [1 ]
Fan, Yang [1 ]
Wu, Zhi-Wei [1 ]
Li, Dan-Dan [1 ]
机构：
[1] Xinyang Normal Univ, Coll Chem & Chem Engn, Xinyang 464000, Peoples R China
来源：
MICROCHIMICA ACTA | 2011年 / 174卷 / 3-4期
基金：
中国国家自然科学基金;
关键词：
Glucose; Quercetin; Graphene; Chemically-modified electrode; Electrocatalysis; ELECTROCATALYTIC OXIDATION; PASTE ELECTRODE; ELECTROCHEMICAL DETECTION; SENSOR; OXIDASE; LEAD; ELECTROOXIDATION; NANOPARTICLES; CADMIUM; SYSTEMS;
D O I：
10.1007/s00604-011-0625-0
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
We present a modified glassy carbon electrode as a sensing platform for glucose. It is based on a composite film prepared from Ni(II) ion, quercetin and graphene. The sensor was characterized by cyclic voltammetry. The electron transfer coefficient, reaction rate constant and catalytic rate constant were determined and found to be 0.53, 5.4 s(-1) and 2.93 x 10(3) M-1 s(-1), respectively. The catalytic current depends linearly on the concentration of glucose in the range from 3 to 900 mu M, with a detection limit of 0.5 mu M (at an S/R of 3). The sensor exhibits good reproducibility, stability, fast response, and high sensitivity.
引用
收藏
页码：289 / 294
页数：6
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