Regular research article
03 Dec 2014
Regular research article | 03 Dec 2014
Aerosol-assisted CVD synthesis, characterisation and gas-sensing application of gold-functionalised tungsten oxide
F. Di Maggio1, M. Ling1, A. Tsang1, J. Covington2, J. Saffell3, and C. Blackman1
F. Di Maggio et al.
F. Di Maggio1, M. Ling1, A. Tsang1, J. Covington2, J. Saffell3, and C. Blackman1
- 1Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
- 2School of Engineering, University of Warwick, Coventry CV4 7AL, UK
- 3Alphasense Ltd, 300 Avenue West, Skyline 120, Great Notley, Essex CM77 7AA, UK
- 1Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK
- 2School of Engineering, University of Warwick, Coventry CV4 7AL, UK
- 3Alphasense Ltd, 300 Avenue West, Skyline 120, Great Notley, Essex CM77 7AA, UK
Correspondence: C. Blackman (c.blackman@ucl.ac.uk)
Hide author details
Received: 31 Jul 2014 – Revised: 13 Oct 2014 – Accepted: 24 Oct 2014 – Published: 03 Dec 2014
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.
