期刊
TALANTA
卷 130, 期 -, 页码 96-102出版社
ELSEVIER
DOI: 10.1016/j.talanta.2014.06.057
关键词
Pyrocatechol violet; Single-walled carbon nanotubes; Pencil graphite electrode; Dihydronicotinamide adenine dinucleotide; Ethanol
资金
- National Natural Science Foundation of China [21175114]
- Natural Science Foundation of Jiangsu [BK2011441, BK20130754]
- Qing Lan project of Jiangsu province
- NJUST Research Funding [2011ZDJH17, 2012ZDJH009]
- Fundamental Research Funds for the Central Universities [30920130112012, 30920140112009]
- Chinese Ministry of Education for Young Teachers [0133219120019]
- State Key Laboratory of Analytical Chemistry for Life Science [SKLACLS1302]
In this work, the electrodeposition of pyrocatechol violet (PCV) was initially investigated by the electrochemical surface plasmon resonance (ESPR) technique. Subsequently, PCV was used as redox-mediator and was electrodeposited on the surface of pencil graphite electrode (PGE) modified with single-wall carbon nanotubes (SWCNTs). Owing to the remarkable synergistic effect of SWCNTs and PCV, PGE/SWCNTs/PCV exhibited excellent electrocatalytic activity towards dihydronicotinamide adenine dinucleotide (NADH) oxidation at low potential (0.2 V vs. SCE) with fast amperometric response (< 10 s), broad linear range (1.3-280 mu M), good sensitivity (146.2 mu A mM(-1) cm(-2)) and low detection limit (1.3 mu M) at signal-to-noise ratio of 3. Thus, this PGE/SWCNTs/PCV could be further used to fabricate a sensitive and economic ethanol biosensor using alcohol dehydrogenase (ADH) via a glutaraldehyde/BSA cross-linking procedure. (C) 2014 Elsevier B.V. All rights reserved.
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