Au        nanoparticle-functionalised WO3 nanoneedles and their application in high sensitivity gas sensor devices

Stella Vallejos; Toni Stoycheva; Polona Umek; Cristina Navio; Rony Snyders; Carla Bittencourt; Eduard Llobet; Christopher Blackman; Savio Moniz; Xavier Correig

doi:10.1039/C0CC02398A

Au nanoparticle-functionalised WO₃ nanoneedles and their application in high sensitivity gas sensor devices†‡

Stella Vallejos,^ab Toni Stoycheva,^a Polona Umek,^c Cristina Navio,^d Rony Snyders,^d Carla Bittencourt,^d Eduard Llobet,^a Christopher Blackman,*^b Savio Moniz^b and Xavier Correig^a

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^a Departament d'Enginyeria Electrònica, Universitat Rovira i Virgili, Països Catalans 26, 43007 Tarragona, Spain

^b Department of Chemistry, University College London, 20 Gordon Street, London, UK
E-mail: c.blackman@ucl.ac.uk
Fax: +44 2076797463
Tel: +44 2076794703

^c Solid State Physics Department, Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia

^d Laboratory of Plasma-Surface Interaction Chemistry (PSI Chem), University of Mons, Av. Nicolas Copernic 1, 7000 Mons, Belgium

Abstract

A new method of synthesising nanoparticle-functionalised nanostructured materials via Aerosol Assisted Chemical Vapour Deposition (AACVD) has been developed. Co-deposition of Au nanoparticles with WO₃ nanoneedles has been used to deposit a sensing layer directly onto gas sensor substrates providing devices with a six-fold increase in response to low concentrations of a test analyte (ethanol).

Chemical Communications

Au nanoparticle-functionalised WO₃ nanoneedles and their application in high sensitivity gas sensor devices†‡

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Au nanoparticle-functionalised WO₃ nanoneedles and their application in high sensitivity gas sensor devices

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