TITLE

Macroscopic Carbon Nanotube Fiber Film Based Glucose Biosensor

AUTHOR(S)
Yan Feng; Ningning Feng; Yu Bai; Xiang Wang; Xiaopu Zhou; Yuliang Zhang
PUB. DATE
July 2013
SOURCE
International Journal of Electrochemical Science;Jul2013, Vol. 8 Issue 7, p10100
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A macroscopic carbon nanotube (CNT) fiber film based electrode has been designed for electrochemical biosensor applications and its efficacy as an enzymatic glucose biosensor demonstrated. This CNT thin film was spun directly from a chemical-vapor-deposition (CVD) gas flow reaction using a mixture of ethanol and acetone as the carbon source and an iron nano-catalyst. The function of CNT film is not only the immobilized media of glucose oxidase (GOx) enzyme but also the electric conduction for electrochemical electrode. The biosensor performances are improved by the concentrated acid treating for this CNT fiber film electrode. The glucose sensitivity of the acid treated CNT fiber film electrode is 32 fold higher than untreated one. The improvement of the CNT fiber film based biosensor is due to the loose and porous surface by acid treating which is in favor of the adhesion and immoblization of GOx enzyme. Moreover, the specialty of this CNT fiber film is that it is a macroscopic film, so it can directly connected to an electrochemistry workstation without other media or any binding materials.
ACCESSION #
89392856

 

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