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
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.
|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
|Deposited By:||Anuj Seth|
|Deposited On:||14 Jan 2009 14:06|
|Last Modified:||20 Jan 2009 15:56|
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