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Issue 10, 2011
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Graphene electrochemistry: Fabricating amperometric biosensors

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Abstract

The electrochemical sensing of hydrogen peroxide is of substantial interest to the operation of oxidase-based amperometric biosensors. We explore the fabrication of a novel and highly sensitive electro-analytical biosensor using well characterised commercially available graphene and compare and contrast responses using Nafion -graphene and -graphite modified electrodes. Interestingly we observe that graphite exhibits a superior electrochemical response due to its enhanced percentage of edge plane sites when compared to graphene. However, when Nafion, routinely used in amperometric biosensors, is introduced onto graphene and graphite modified electrodes, re-orientation occurs in both cases which is beneficial in the former and detrimental in the latter; insights into this contrasting behaviour are consequently presented providing acuity into sensor design and development where graphene is utilised in biosensors.

Graphical abstract: Graphene electrochemistry: Fabricating amperometric biosensors

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Publication details

The article was received on 06 Nov 2010, accepted on 22 Dec 2010 and first published on 01 Apr 2011


Article type: Paper
DOI: 10.1039/C0AN00875C
Citation: Analyst, 2011,136, 2084-2089
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    Graphene electrochemistry: Fabricating amperometric biosensors

    D. A. C. Brownson and C. E. Banks, Analyst, 2011, 136, 2084
    DOI: 10.1039/C0AN00875C

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