Journal
BIOSENSORS & BIOELECTRONICS
Volume 47, Issue -, Pages 553-558Publisher
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2013.03.072
Keywords
Carbon nanotube; Ceramic carbon electrode; Cholesterol; Molecularly imprinted polymers; Surface molecularly imprinting
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Funding
- National Natural Science Foundation of China [21274022, 21175126]
- Natural Science Foundation of Fujian Province [23131065]
- Faculty Development Program of Bahauddin Zakaryia University Multan [PF/Cont./2-50/Admin/1830]
- Academy of Sciences for the Developing World (TWAS)
- Chinese Academy of Sciences (CAS)
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A monolithic molecular imprinting sensor based on ceramic carbon electrode (CCE) has been reported. The sensor can be renewed simply by smoothing. It was fabricated by thoroughly mixing multiwalled carbon nanotube@molecularly imprinted polymer (MWCNT@MIP), graphite powder, and silicon alkoxide, and then packing the resulting complex mixture of components firmly into the electrode cavity of a Teflon sleeve. The incorporated MWCNT@MIP in CCEs functioned as a recognition element for cholesterol determination. The MWCNT@MIP-CCEs were tested in the presence or absence of cholesterol by cyclic voltammetry and linear sweep voltammetry. The cholesterol sensor has excellent sensitivity with a linear range of 10-300 nM and a detection limit of 1 nM (S/N=3). The monolithic molecular imprinting sensor exhibits good stability, high sensitivity, and user-friendly reusability for cholesterol determination. This study shows that CCE is a promising matrix for MIP sensors. (C) 2013 Elsevier B.V. All rights reserved.
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