标题:Electrochemical co-reduction synthesis of graphene/nano-gold composites and its application to electrochemical glucose biosensor
作者:Wang, Xiaolin; Zhang, Xiaoli
通讯作者:Zhang, X
作者机构:[Wang, Xiaolin; Zhang, Xiaoli] Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China.
会议名称:12th International Fischer Symposium
会议日期:JUN 03-07, 2012
来源:ELECTROCHIMICA ACTA
出版年:2013
卷:112
页码:774-782
DOI:10.1016/j.electacta.2013.09.036
关键词:Biosensor; Graphene/nano-Au composite; Electrochemical co-reduction; synthesis; Glucose oxidase; Glucose detection
摘要:A simple, green and controllable approach was employed for electrochemical synthesize of the graphene/nano-Au composites. The process was that graphene oxide and HAuCl4 was electrochemically co-reduced onto the glassy carbon electrode (GCE) by cyclic voltammetry in one step. The obtained graphene/nano-Au/GCE exhibited high electrocatalytic activity toward H2O2, which resulted in a remarkable decrease in the overpotential of H2O2 electrochemical oxidation compared with bare GCE. Such electrocatalytic behavior of the graphene/nano-Au/GCE permitted effective low-potential amperometric biosensing of glucose via the incorporation of glucose oxidase (GOD) with graphene/nano-Au. An obvious advantage of this enzyme electrode (graphene/nano-Au/GOD/GCE) was that the graphene/nano-Au nanocomposites provided a favorable microenvironment for GOD and facilitated the electron transfer between the active center of GOD and electrode. The immobilized GOD showed a direct, reversible redox reaction. Furthermore, the graphene/nano-Au/GOD/GCE was used as a glucose biosensor, displaying a low detection limit of 17 mu M (S/N = 3), a high sensitivity of 56.93 mu AmM-1 cm(-2), acceptable reproducibility, very good stability, selectivity and anti-interference ability. (C) 2013 Elsevier Ltd. All rights reserved.
收录类别:CPCI-S;EI;SCOPUS;SCIE
WOS核心被引频次:58
Scopus被引频次:60
资源类型:会议论文;期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84885368745&doi=10.1016%2fj.electacta.2013.09.036&partnerID=40&md5=de6e0d8cbf456c43953cee71c09617a2
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