Articles | Volume 3, issue 2
https://doi.org/10.5194/jsss-3-325-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.Aerosol-assisted CVD synthesis, characterisation and gas-sensing application of gold-functionalised tungsten oxide
Abstract. 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.