NDLI: Polypyrrole (PPy) nanowire arrays entrapped with glucose oxidase biosensor for glucose detection

Content Provider	IEEE Xplore Digital Library
Author	Xu, G.Q. Lv, J. Zheng, Z.X. Wu, Y.C.
Copyright Year	2012
Description	Author affiliation: Laboratory of Functional Nanomaterials and Devices, School of Material Science and Engineering, Hefei University of Technology, 230009, China (Xu, G.Q.; Wu, Y.C.) \|\| Hefei University of Technology, CHINA (Lv, J.; Zheng, Z.X.)
Abstract	Well aligned PPy nanowire arrays with diameter about 20 nm have been accomplished by electrochemical polymerization within anodized aluminum oxide (AAO) template. Glucose oxidase (GOx) was galvanostatically entrapped within the PPy nanoarrays. Scanning electron microscopy (SEM) confirmed the presence of PPy nanowire arrays. The electrochemical properties and response of the PPy-GOx nanowire arrays biosensor to glucose were characterized by cyclic voltammetry and amperometry. Evident current response can be observed in the cyclic voltammogram of the PPy-GOx nanowire arrays biosensor when exposed to glucose in a phosphate buffer solution. Amperometric detection of glucose was successfully achieved and the established optimum conditions with the PPy(GOx) biosensor were 0.4 M pyrrole, 200 U/ml GOx, applied current density of 0.1 $mA/cm^{2},$ polymerization time of 600 s. The biosensor achieved a detection limit of 50 µM, a linear concentration range of 0.1 mM to 8 mM, and sensitivity of 9.97 µA $cm^{#x2212;2}$ $mM^{−1}.$
Starting Page	511
Ending Page	514
File Size	756072
Page Count	4
File Format	PDF
ISBN	9781467311229
e-ISBN	9781467311243
DOI	10.1109/NEMS.2012.6196803
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-03-05
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Polymers Sugar Biosensors biosensor PPy nanowire arrays glucose oxidase amperometry
Content Type	Text
Resource Type	Article

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