Nano Archive

Carbon nanofiber-based composites for the construction of mediator-free biosensors

Lu, Xianbo and Zhou, Jianhua and Lu, Wu and Liu, Qing and Li, Jinghong (2008) Carbon nanofiber-based composites for the construction of mediator-free biosensors. BIOSENSORS & BIOELECTRONICS, 23 (8). pp. 1236-1243.

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Official URL: http://dx.doi.org/10.1016/j.bios.2007.11.006

Abstract

Carbon nanofibers (CNFs), with typical diameters of similar to 80 nm and lengths of the order of micrometers, are extremely attractive in bioanalytical area as they can combine properties of high surface area, non-toxicity, acceptable biocompatibility, ease of fabrication, chemical and electrochemical stability, good electrical conductivity. In this work, CNF-based composites were successfully used as an immobilization matrix for the construction of a reagentless mediator-free hemoglobin-based H2O2 biosensor. The results revealed that hemoglobin retained its essential secondary structure in the CNF-based composite film. With the advantages of organic-inorganic hybrid materials, dramatically facilitated direct electron transfer of hemoglobin and good bioelectrocatalytic activity towards H2O2 were demonstrated. The biosensor displayed good performance along with good long-term stability. The CNTF-based composites were proved to be a promising biosensing platform for the construction of mediator-free biosensors, and may find wide potential applications in biosensors, biocatalysis, bioelectronics and biofuel cell. (c) 2007 Elsevier B.V. All rights reserved.

Item Type:Article
Uncontrolled Keywords:biosensor; carbon nanofibers; direct electron transfer; hemoglobin; H2O2
Subjects:Material Science > Functional and hybrid materials
Analytical Science > Nanotechnology for sensing and actuating
Biomedical Science > Nanobiotechnology
ID Code:551
Deposited By:IoN
Deposited On:20 Jan 2009 11:59
Last Modified:20 Jan 2009 11:59

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