Issue 45, 2011
From the journal:

Physical Chemistry Chemical Physics

CVDgraphene electrochemistry: biologically relevant molecules†

Dale A. C. Brownson,a   Maria Gómez-Mingotb  and  Craig E. Banks*a  

* Corresponding authors

a Faculty of Science and Engineering, School of Science and the Environment, Division of Chemistry and Environmental Science, Manchester Metropolitan University, Chester Street, Manchester M1 5GD, Lancs, UK
E-mail: c.banks@mmu.ac.uk
Fax: +44 (0) 1612476831
Tel: +44 (0) 1612471196

b Physical Chemistry Department and Institute of Electrochemistry, University of Alicante, San Vicente del Raspeig, Alicante, Spain

Abstract

We investigate the electrochemical properties of CVD grown graphene towards the detection of various biologically prevalent analytes including L-ascorbic acid (AA), dopamine hydrochloride (DA), β-nicotinamide adenine dinucleotide (NADH), uric acid (UA) and epinephrine (EP). We find that the observed electrochemical response of the CVD-graphene towards these select analytes does not originate from the graphene, however, from various other contributions including the presence of ‘graphitic islands’ on the surface of the CVD-graphene which dominate its electrochemistry. In the systems studied within, it appears at best, CVD-graphene acts akin to that of an edge plane pyrolytic graphite (EPPG) electrode constructed from highly ordered pyrolytic graphite. However, in other cases, the response of the CVD-graphene is worse than that of an EPPG electrode, which is likely due to the low O/C ratio.

Graphical abstract: CVD graphene electrochemistry: biologically relevant molecules

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Article information

DOI
https://doi.org/10.1039/C1CP22648G
Article type
Paper
Submitted
18 Aug 2011
Accepted
23 Sep 2011
First published
12 Oct 2011

Phys. Chem. Chem. Phys., 2011,13, 20284-20288

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CVD graphene electrochemistry: biologically relevant molecules

D. A. C. Brownson, M. Gómez-Mingot and C. E. Banks, Phys. Chem. Chem. Phys., 2011, 13, 20284 DOI: 10.1039/C1CP22648G

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