alexa Vertically Aligned Pd Nanowires for Glucose Oxidase Bioanode | OMICS International | Abstract
ISSN: 2155-6210

Journal of Biosensors & Bioelectronics
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Vertically Aligned Pd Nanowires for Glucose Oxidase Bioanode

Gymama Slaughter* and Kweku Amoah

Department of Computer Science and Electrical Engineering, University of Maryland Baltimore County and Bioelectronics Laboratory, USA

*Corresponding Author:
Gymama Slaughter
Department of Computer Science and Electrical Engineering
of Maryland Baltimore County and Bioelectronics Laboratory
1000 Hilltop Circle, Baltimore, MD 21250, USA
Tel: +14104558483
Fax: +1410455396
E-mail: [email protected]

Received Date: August 10, 2012; Accepted Date: September 04, 2012; Published Date: September 05, 2012

Citation: Slaughter G, Amoah K (2012) Vertically Aligned Pd Nanowires for Glucose Oxidase Bioanode. J Biosens Bioelectron 3:124. doi: 10.4172/2155-6210.1000124

Copyright: © 2012 Slaughter G, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

A bioanode for glucose based biofuel cell have been fabricated by combining glucose oxidase and highly ordered Palladium (Pd) nanowire array electrode. The Pd nanowires were 5.57 μm in length and 64.28 nm in diameter. The hydrogel composite modified Pd nanowire array bioanodes were characterized with cyclic voltammetry in the presence of different scan rates and different substrate concentrations under physiological conditions. The electrochemical measurements showed a linear amperometric response in the range of 1 mM to 13 mM. In addition, surface and structural characterization were performed by scanning electron microscopy leading to the conclusion that the Pd nanowires are highly ordered and vertically aligned and thereby promotes the number of electroactive sites for the catalysis of the oxidation of glucose. The combination of glucose oxidase and Pd nanowire arrays revealed the capability of these enzymatic bioanodes to perform direct electron transfer to Pd nanostructure surfaces and be used in a glucose biofuel cell.

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