Suravaram, Sindhu Krishna, Smith, David Kelham orcid.org/0000-0002-9881-2714, Parkin, Alison orcid.org/0000-0003-4715-7200 et al. (1 more author) (2019) Conductive gels based on modified agarose embedded with gold nanoparticles and their application as a conducting support for Shewanella oneidensis MR-1. ChemElectroChem. pp. 5876-5879. ISSN 2196-0216
Abstract
Shewanella oneidensis is an electrogenic microbe which could be more widely applied in biosensing and fuel cell applications if better methods existed to promote electrode-biofilm formation. This paper reports a simple procedure that converts agarose, a cheap and readily available polymer, into a modified “MAgarose” material which will form biocompatible hydrogels that embed gold nanoparticles (AuNPs) along the fibers to yield a composite material with a conductivity ca. 80 times higher than an unmodified agarose-AuNP gel. Proof-of-concept bioelectrochemical experiments using Shewanella oneidensis show that when these MAgarose-AuNP gels are used to coat carbon veil there is a 10-fold increase in oxidative microbial current production when tested in a 3-electrode cell set-up. Microscopy results show that this can be attributed to the ability of the composite hydrogel to support MR-1 growth throughout the 3D matrix.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details. |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Chemistry (York) |
Depositing User: | Pure (York) |
Date Deposited: | 25 Nov 2019 09:40 |
Last Modified: | 04 Jan 2025 00:18 |
Published Version: | https://doi.org/10.1002/celc.201901618 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1002/celc.201901618 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:153830 |