Direct electrochemical reduction of graphene oxide and its application to determination of L-tryptophan and L-tyrosine

被引：130

作者：

Deng, Ke-Qin ^{[1
]}

Zhou, Jian-hong ^{[2
]}

Li, Xiao-Fang ^{[1
]}

机构：

[1] Hunan Univ Sci & Technol, Sch Chem & Chem Engn, Xiangtan 411201, Peoples R China

[2] Hunan Univ Sci & Technol, Sch Life Sci, Xiangtan 411201, Peoples R China

来源：

COLLOIDS AND SURFACES B-BIOINTERFACES | 2013年 / 101卷

基金：

中国国家自然科学基金;

关键词：

Graphene oxide; Direct electrochemical reduction; Tryptophan; Tyrosine; GLASSY-CARBON ELECTRODE; SENSITIVE VOLTAMMETRIC DETERMINATION; PASTE ELECTRODE; ELECTROCATALYTIC OXIDATION; BEHAVIOR; SHEETS; ACID;

D O I：

10.1016/j.colsurfb.2012.06.007

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

Directly electrochemically reduced graphene oxide (ERGO) was obtained by potentiostatic reduction of exfoliated graphene oxide sheets on a glassy carbon electrode (GCE). The ERGO-modified electrode (ERGO/GCE) displayed greatly improved voltammetric response to the amino acids L-tryptophane (Trp) and L-tyrosine (Tyr) compared with the chemically reduced graphene oxide (CRGO) modified electrode. The ERGO/GCE separated the voltammetric responses of ascorbic acid (AA) and uric acid (UA) from that of Trp and Tyr. It eliminated the interference from AA and UA. The electrode showed good reproducibility and was used to determine Trp and Tyr with linear ranges of 0.2-40.0 mu mol L-1 and 0.5-80.0 mu mol L-1, detection limits of 0.1 mu mol L-1 and 0.2 mu mol L-1, respectively. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：183 / 188

页数：6

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