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Fabrication of carbon nanotubes/poly(1,2-diaminobenzene) nanoporous composite via multipulse chronoamperometric electropolymerization process and its electrocatalytic property toward oxidation of NADH

Zeng, Jinxiang and Gao, Xiaohua and Wei, Wanzhi and Zhai, Xiurong and Yin, Jian and Wu, Ling and Liu, Xiaoyin and Liu, Kai and Gong, Shuguo (2007) Fabrication of carbon nanotubes/poly(1,2-diaminobenzene) nanoporous composite via multipulse chronoamperometric electropolymerization process and its electrocatalytic property toward oxidation of NADH. SENSORS AND ACTUATORS B-CHEMICAL, 120 (2). pp. 595-602.

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Official URL: http://dx.doi.org/10.1016/j.snb.2006.03.016

Abstract

A novel method was proposed for fabrication of a carbon nanotubes/poly(1,2-diaminobenzene) nanoporous composite based electrode. The poly(1,2-diaminobenzene) was deposited onto the surface of a glassy carbon electrode (GCE) modified with multi-wall carbon nanotubes (MWNTs) via multipulse chronoamperometric electropolymerization (MCE) process. Compared with the composite prepared by conventional electropolymerization (CE), the electronic and ionic transport capacity of the MCE-based composite were significantly improved due to its unique nanoporous structure. The surface of the composite-modified GCE was characterized with scanning electron microscopy (SEM) and cyclic voltammetry (CV). The nanoporous MCE-based electrode was applied to determination of NADH at a much low potential of 70 mV, and a linear range from 2.0 mu M to 4.0 mM was observed with fast response (within 5 s) and a lower detection limit of 0.5 mu M (based on S/N = 3). In comparison, a narrow linear range from 5.0 mu M to 2.0 mM, slower response (up to 15 s) and a higher detection limit of 3.0 mu M (based on S/N = 3) was obtained with the electrode prepared by CE. The wider linear range, lower detection limit and fast response of the MCE-based electrode implies that the new method proposed can provide more excellent platforms for sensitive electrochemical sensing and biosensing. (c) 2006 Elsevier B.V. All rights reserved.

Item Type:Article
Uncontrolled Keywords:multipulse chronoamperometric electropolymeriziation; carbon nanotubes; 1,2-diaminobenzene; nanoporous composite; NADH
Subjects:Material Science > Functional and hybrid materials
Material Science > Nanofabrication processes and tools
Analytical Science > Nanotechnology for sensing and actuating
Material Science > Nanochemistry
ID Code:3229
Deposited By:Anuj Seth
Deposited On:14 Jan 2009 14:06
Last Modified:20 Jan 2009 15:56

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