Reversible Antimicrobial Photoswitching in Nanosilver

Gunawan, C; Teoh, WY; Marquis, CP; Lifia, J; Amal, R

Reversible Antimicrobial Photoswitching in Nanosilver

Gunawan, C

Teoh, WY Marquis, CP Lifia, J Amal, R

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Publication Type:: Journal Article
Citation:: Small, 2009, 5 (3), pp. 341 - 344
Issue Date:: 2009-02-06

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	SMALL_NATURE NANOTECHNOLOGY HIGHLIGHT_Gunawan et al_Nano Silver (I) Oxide_Metallic Silver 5 341 344 2009.pdf	Published Version	479.84 kB	Adobe PDF	View/Open

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Field	Value	Language
dc.contributor.author	Gunawan, C https://orcid.org/0000-0002-2957-1347	en_US
dc.contributor.author	Teoh, WY	en_US
dc.contributor.author	Marquis, CP	en_US
dc.contributor.author	Lifia, J	en_US
dc.contributor.author	Amal, R	en_US
dc.date.issued	2009-02-06	en_US
dc.identifier.citation	Small, 2009, 5 (3), pp. 341 - 344	en_US
dc.identifier.issn	1613-6810	en_US
dc.identifier.uri	http://hdl.handle.net/10453/36319
dc.description.abstract	A reversible antimicrobial photoswitching of nanosilver using an optical wavelength-selective technique was reported. Finely dispersed nanosilver on semiconductor support (TiO2) was synthesized rapidly through a one-step flame spray pyrolysis (FSP) of silver benzoate and titanium isopropoxide co-dissolved in acetonitrile/xylene. The results show that only a very minimal extent of nanosilver particle size increase takes place during the UV-A induced reduction due to its mild an dry condition. The nanometallic silver is found to be responsive to the visible light through its surface plasmon resonance, resulting in the excitation and reverse electron flow from the silver deposits to the conduction band (CB) of TiO2. Switching-off of the sample by re-irradiating with UV-A for 40h results in fully reversible and indefinite cyclic characteristics of the Ag/TiO2.	en_US
dc.relation.ispartof	Small	en_US
dc.relation.isbasedon	10.1002/smll.200801202	en_US
dc.subject.classification	Nanoscience & Nanotechnology	en_US
dc.subject.mesh	Escherichia coli	en_US
dc.subject.mesh	Titanium	en_US
dc.subject.mesh	Silver Compounds	en_US
dc.subject.mesh	Adenosine Triphosphate	en_US
dc.subject.mesh	Anti-Bacterial Agents	en_US
dc.subject.mesh	Quantum Dots	en_US
dc.subject.mesh	Kinetics	en_US
dc.subject.mesh	Photochemistry	en_US
dc.subject.mesh	Metal Nanoparticles	en_US
dc.title	Reversible Antimicrobial Photoswitching in Nanosilver	en_US
dc.type	Journal Article
utslib.citation.volume	3	en_US
utslib.citation.volume	5	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - ithree - Institute of Infection, Immunity and Innovation
utslib.copyright.status	closed_access
pubs.issue	3	en_US
pubs.publication-status	Published	en_US
pubs.volume	5	en_US

Abstract:

A reversible antimicrobial photoswitching of nanosilver using an optical wavelength-selective technique was reported. Finely dispersed nanosilver on semiconductor support (TiO2) was synthesized rapidly through a one-step flame spray pyrolysis (FSP) of silver benzoate and titanium isopropoxide co-dissolved in acetonitrile/xylene. The results show that only a very minimal extent of nanosilver particle size increase takes place during the UV-A induced reduction due to its mild an dry condition. The nanometallic silver is found to be responsive to the visible light through its surface plasmon resonance, resulting in the excitation and reverse electron flow from the silver deposits to the conduction band (CB) of TiO2. Switching-off of the sample by re-irradiating with UV-A for 40h results in fully reversible and indefinite cyclic characteristics of the Ag/TiO2.

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http://hdl.handle.net/10453/36319