Electrochemical properties of catechin at a single-walled carbon nanotubes-cetylramethylammonium bromide modified electrode

被引：36

作者：

Yang, Li-Jun

Tang, Cheng

Xiong, Hua-Yu

Zhang, Xiu-Hua

Wang, Sheng-Fu ^{[1
]}

机构：

[1] Hubei Univ, Minist Educ, Key Lab Synth & Applicat Organ Funct Mol, Wuhan 430062, Peoples R China

来源：

BIOELECTROCHEMISTRY | 2009年 / 75卷 / 02期

关键词：

Catechin; Single-walled carbon nanotubes; Cetylramethylammonium bromide; Determination; CAPILLARY-ELECTROPHORESIS; AMPEROMETRIC DETECTION; PASTE ELECTRODE; RUTIN; (+)-CATECHIN; CYCLODEXTRIN; QUERCETIN; OXIDATION; BEHAVIOR; ACID;

D O I：

10.1016/j.bioelechem.2009.03.009

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The electrochemical properties of catechin at single-walled carbon nanotubes (SWNTs)-cetylramethylammonium bromide (CTAB) modified glassy carbon electrodes (GCE) were investigated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The SWNTs-CTAB film was characterized with transmission electron microscopy (TEM). A series of parameters including pH of supporting electrolyte, accumulation potential and accumulation time were optimized. There were three peaks of catechin at SWNTs-CTAB/GCE in the potential range of -0.4-1.0 V in PBS (pH 7.0): a reversible pair of peaks and an irreversible peak of the anodic peak. The reductive peak current increased linearly with the concentration of catechin in the range from 3.72 x 10(-10) to 2.38 x 10(-9) M. The detection limit was 1.12 x 10(-10) M. The SWNTs-CTAB/GCE showed good stability and low detection limit, and could be applied to detect trace catechin. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：158 / 162

页数：5

共 34 条

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