A graphene-based electrochemical sensor for sensitive determination of caffeine

被引：127

作者：

Sun, Jun-Yong ^{[1
]}

Huang, Ke-Jing ^{[1
]}

Wei, Shuai-Yun ^{[1
]}

Wu, Zhi-Wei ^{[1
]}

Ren, Fang-Ping ^{[1
]}

机构：

[1] Xinyang Normal Univ, Coll Chem & Chem Engn, Xinyang 464000, Peoples R China

来源：

COLLOIDS AND SURFACES B-BIOINTERFACES | 2011年 / 84卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Graphene; Caffeine; Nafion; Sensor; STRIPPING VOLTAMMETRIC DETERMINATION; OXIDATION;

D O I：

10.1016/j.colsurfb.2011.01.036

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

An electrochemical sensor based on the electrocatalytic activity of graphene (Gr) for sensitive detection of caffeine is presented. The electrochemical behaviors of caffeine on Nafion-Gr modified glassy carbon electrode (Nafion-Gr/GCE) were investigated by cyclic voltammetry and differential pulse voltammetry. The results showed that the Nafion-Gr/GCE exhibited excellent electrocatalytic activity to caffeine. Caffeine can be effectively accumulated at Nafion-Gr/GCE and produce a sensitive anodic peak. Such electrocatalytic behavior of Gr is attributed to its unique physical and chemical properties, e.g., subtle electronic characteristics and strong adsorptive capability. This electrochemical sensor shows an excellent performance for detecting caffeine with a detection limit of 1.2 x 10(-7) M (S/N = 3), a reproducibility of 5.2% relative standard deviation, and a satisfied recovery from 98.6% to 102.0%. The sensor shows great promise for simple and sensitive determination of caffeine. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：421 / 426

页数：6

共 45 条

[1]

Alpdogan G, 2002, TURK J CHEM, V26, P295

[2] Determination of ephedrine, pseudo-ephedrine and caffeine in a dietary product by capillary electrophoresis [J].

Amini, A ;

Barclay, V ;

Rundlöf, T ;

Jönsson, S ;

Karlsson, A ;

Arvidsson, T .

CHROMATOGRAPHIA, 2006, 63 (3-4) :143-148

[3]

[Anonymous], 2007, ELECTROCHIM ACTA, DOI DOI 10.1016/J.ELECTACTA.2007.03.065

[4] Simultaneous determination of caffeine, ergotamine, and metamizol in solid pharmaceutical formulation by HPTLC-UV-FLD with mass confirmation by online HPTLC-ESI-MS [J].

Aranda, Mario ;

Morlock, Gertrud .

JOURNAL OF CHROMATOGRAPHIC SCIENCE, 2007, 45 (05) :251-255

[5] High-throughput determination of theophylline and caffeine in human serum by conventional liquid chromatography-mass spectrometry [J].

Arinobu, Tetsuya ;

Hattori, Hideki ;

Kumazawa, Takeshi ;

Lee, Xiao-Pen ;

Mizutani, Yoko ;

Katase, Takao ;

Kojima, Sadao ;

Omori, Takayuki ;

Kaneko, Rina ;

Ishii, Akira ;

Seno, Hiroshi .

FORENSIC TOXICOLOGY, 2009, 27 (01) :1-6

[6]

BARD KJ, 2001, ELECTROCHEMICAL METH, P211

[7]

BLECHER R, 1997, PHYSIOL CHEM PHYS M, V358, P807

[8] Analytical methods for caffeine. [J].

De Maria, Carlos A. B. ;

Moreira, Ricardo F. A. .

QUIMICA NOVA, 2007, 30 (01) :99-105

[9] Comparing some operational approaches to the limit of detection [J].

Desimoni, E ;

Brunetti, B ;

Cattaneo, R .

ANNALI DI CHIMICA, 2004, 94 (7-8) :555-569

[10]

Desimoni E, 2002, ELECTROANAL, V14, P459, DOI 10.1002/1521-4109(200203)14:6<459::AID-ELAN459>3.0.CO

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