A method based on electrodeposition of reduced graphene oxide on glassy carbon electrode for sensitive detection of theophylline

被引：43

作者：

Cui, Fei ^{[1
]}

Zhang, Xiaoli ^{[1
]}

机构：

[1] Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2013年 / 17卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Electrodeposition; Graphene; Theophylline; Electrochemical sensor; PYROLYTIC GRAPHITE ELECTRODE; ELECTROCHEMICAL OXIDATION; EPITAXIAL GRAPHENE; CAFFEINE; THEOBROMINE; NANOSHEETS; FILMS; VOLTAMMETRY; REDUCTION; COMPOSITE;

D O I：

10.1007/s10008-012-1867-4

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Graphene nanosheets were directly electrodeposited onto a glassy carbon electrode (GCE) from the electrolyte solution containing graphene oxide (GO); the resulting electrode (ED-GO/GCE) was characterized with scanning electron microscopy. A simple and rapid electrochemical method was developed for the determination of theophylline (TP), based on the excellent properties of ED-GO film. The result indicated that ED-GO film-modified GCE exhibited efficient electrocatalytic oxidation for TP with relatively high sensitivity and stability. The electrochemical behavior of TP at ED-GO/GCE was investigated in detail. Under the optimized conditions, the oxidation peak current was proportional to the TP concentration in the range of 8.0 x 10(-7) to 6.0 x 10(-5) mol L-1 with the detection limit of 1.0 x 10(-7) mol L-1 (S/N = 3). The proposed method was successfully applied to green tea samples with satisfactory results.

引用

页码：167 / 173

页数：7

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