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Synthesis and antibacterial effects of cobalt–cellulose magnetic nanocomposites

Kornherr, A.; Alahmadi, N. S.; Betts, J. W.; Kelly, S.M.; Francesconi, M. G.; Prior, T. J.; Wadhawan, J. D.; Cheng, F.; Francesconi, M. Grazia; Kelly, S. M.; Prior, Timothy; Wadhawan, Jay; Kornherr, Andreas


A. Kornherr

N. S. Alahmadi

J. W. Betts

S.M. Kelly

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Dr Tim Prior
Senior Lecturer in Inorganic Chemistry

J. D. Wadhawan

F. Cheng

S. M. Kelly

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Dr Tim Prior
Senior Lecturer in Inorganic Chemistry

Andreas Kornherr


© The Royal Society of Chemistry. Green synthesis is employed to prepare cobalt/cellulose nanocomposites with cubic (α-cobalt) cobalt as a main component with antibacterial and magnetic properties. An in situ reduction of aqueous solutions of cobalt ions on a model cellulose substrate surface using hydrogen gas affords spherical, cellulose-stabilised cobalt nanoclusters with magnetic properties and an average diameter of 7 nm that are distributed evenly over the surface of the cellulose fibres. These cobalt/cellulose nanocomposites exhibit good antibacterial action against opportunistic pathogens both Gram-positive (S. aureus) and Gram-negative (E. coli, A. baumannii and P. aeruginosa), with zones of inhibition up to 15 mm, thereby encouraging the deployment of these advanced materials for the treatment of wastewater or within medical dressings. This method of preparation is compared with the analogous in situ reduction of cobalt ions on a cellulose surface using sodium borohydride as reducing agent.


Kelly, S., Kornherr, A., Alahmadi, N. S., Betts, J. W., Francesconi, M. G., Prior, T. J., …Kornherr, A. (2017). Synthesis and antibacterial effects of cobalt–cellulose magnetic nanocomposites. RSC advances, 7(32), 20020-20026.

Journal Article Type Article
Acceptance Date Mar 28, 2017
Online Publication Date Apr 5, 2017
Publication Date Apr 5, 2017
Deposit Date Sep 21, 2017
Publicly Available Date Sep 21, 2017
Journal RSC Advances
Print ISSN 2046-2069
Electronic ISSN 2046-2069
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 7
Issue 32
Pages 20020-20026
Keywords Magnetic nanocomposites, Cobalt nanoparticles, Synthesis and characterisation
Public URL
Publisher URL!divAbstract
Additional Information : This document is Similarity Check deposited; : M. G. Francesconi (ORCID); : S. M. Kelly (ORCID); : The Royal Society of Chemistry has an exclusive publication licence for this journal; OPEN ACCESS: This article is freely available. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence (CC BY 3.0); : Single-blind; : Received 21 January 2017; Accepted 28 March 2017; Version of Record published 5 April 2017


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This article is published under a CC-BY licence.

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