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Ga2O3–Cu2O: synthesis, characterisation and antibacterial properties

Hassan, IA; Sathasivam, S; Islam, HU; Nair, SP; Carmalt, CJ; (2017) Ga2O3–Cu2O: synthesis, characterisation and antibacterial properties. RSC Advances , 7 (1) pp. 551-558. 10.1039/c6ra24737g. Green open access

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Abstract

This paper reports on a Ga2O3-Cu2O composite thin film that allows the destruction of both Gram negative and Gram positive bacteria via a dual mechanism involving Ga3+ ions that disrupt Fe3+ metabolism pathways in bacteria as well as through the reactive oxygen species generated by possible Fenton type reactions that are mediated by Cu1+ ions. This dual mechanism allowed the highly transparent composite thin film to destroy both E. coli and S. aureus to below detection limits in 24 hours and limits the build up of bacterial resistance. The composite film was amorphous and the nature of the Ga and Cu species was extensively analysed on the surface and the bulk using X-ray photoelectron spectroscopy and synchrotron radiation involving linear combination analysis (LCA) and the X-ray absorption near edge structure.

Type: Article
Title: Ga2O3–Cu2O: synthesis, characterisation and antibacterial properties
Open access status: An open access version is available from UCL Discovery
DOI: 10.1039/c6ra24737g
Publisher version: http://doi.org/10.1039/c6ra24737g
Language: English
Additional information: © The Royal Society of Chemistry. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Eastman Dental Institute
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Eastman Dental Institute > Microbial Diseases
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/1536067
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