Aerosol-assisted CVD synthesis, characterisation and gas-sensing application of gold-functionalised tungsten oxide

F. Di Maggio; M. Ling; A. Tsang; J. Covington; J. Saffell; C. Blackman

doi:10.5194/jsss-3-325-2014

Journal of Sensors and Sensor Systems (Dec 2014)

Aerosol-assisted CVD synthesis, characterisation and gas-sensing application of gold-functionalised tungsten oxide

F. Di Maggio,
M. Ling,
A. Tsang,
J. Covington,
J. Saffell,
C. Blackman

Affiliations

F. Di Maggio: Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
M. Ling: Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
A. Tsang: Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
J. Covington: School of Engineering, University of Warwick, Coventry CV4 7AL, UK
J. Saffell: Alphasense Ltd, 300 Avenue West, Skyline 120, Great Notley, Essex CM77 7AA, UK
C. Blackman: Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK

DOI: https://doi.org/10.5194/jsss-3-325-2014
Journal volume & issue: Vol. 3, no. 2
pp. 325 – 330

Abstract

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Tungsten oxide nanoneedles (NNs) functionalised with gold nanoparticles (NPs) have been integrated with alumina gas-sensor platforms using a simple and effective co-deposition method via aerosol-assisted chemical vapour deposition (AACVD) utilising a novel gold precursor, (NH4)AuCl4. The gas-sensing results show that gold NP functionalisation of tungsten oxide NNs improves the sensitivity of response to ethanol, with sensitivity increasing and response time decreasing with increasing amount of gold.

Published in Journal of Sensors and Sensor Systems

ISSN: 2194-8771 (Print); 2194-878X (Online)
Publisher: Copernicus Publications
Country of publisher: Germany
LCC subjects: Technology
Website: http://www.journal-of-sensors-and-sensor-systems.net

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