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Title of Journal: Appl Biochem Biotechnol

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Abbravation: Applied Biochemistry and Biotechnology

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Springer US

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DOI

10.1007/978-3-642-24820-7_74

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ISSN

1559-0291

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GrapheneMultiwall Carbon NanotubeGold Nanocluste

Authors: Xiaofang Liu Shaping Wei Shihong Chen Dehua Yuan Wen Zhang
Publish Date: 2014/05/23
Volume: 173, Issue: 7, Pages: 1717-1726
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Abstract

In this paper graphenemultiwall carbon nanotubegold nanocluster GPMWCNTAuNC composites were synthesized and used as modifier to fabricate a sensor for simultaneous detection of ascorbic acid AA dopamine DA and uric acid UA The electrochemical behavior of the sensor was investigated by electrochemical impedance spectroscopy EIS cyclic voltammetry CV and differential pulse voltammetry DPV techniques The combination of GP MWCNTs and AuNCs endowed the electrode with a large surface area good catalytic activity and high selectivity and sensitivity The linear response range for simultaneous detection of AA DA and UA at the sensor were 120–1701 2–213 and 07–883 μM correspondingly and the detection limits were 40 067 and 023 μM S/N = 3 respectively The proposed method offers a promise for simple rapid selective and costeffective analysis of small biomoleculesThis work is supported by National Natural Science Foundation of China 21075100 21275119 Municipal Key Laboratory on Luminescence and RealTime Analysis Southwest University and the Fundamental Research Funds for the Central Universities XDJK2012A004

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