Methanol, Ethanol and Acetone Sensing Using AACVD-grown Tungsten Oxide Nanoneedles
- *Corresponding Author:
- Adnane Abdelghani
Carthage University, Nanotechnology Group, National Institute of Applied Science and Technology
Bp676, Centre Urbain Nord, 1080 Charguia Cedex, Tunisia
Tel: +216 71 703 629
E-mail: [email protected]
Received date: May 26, 2016; Accepted date: June 13, 2016; Published date: June 20, 2016
Citation: Thamri A, Baccar H, Annanouch FE, Llobet E, Abdelghani A (2016) Methanol, Ethanol and Acetone Sensing Using AACVD-grown Tungsten Oxide Nanoneedles. J Nanomed Nanotechnol 7:380. doi:10.4172/2157-7439.1000380
Copyright: © 2016 Thamri A, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
We report on the aerosol assisted chemical vapor deposition growth of either pure or gold-nanoparticle decorated tungsten oxide nanoneedles, directly integrated onto alumina transducers for achieving resistive gas sensors. The morphology of the different samples grown is studied by scanning electron microscopy and by atomic force microscopy. The performance of these nanomaterials for the detection of methanol, ethanol and acetone vapors at ppm levels is studied. It is found that the detection of these species is possible even in a background of nitrogen where oxygen is present at ppm levels only. The presence of Au nanoparticles on the surface of tungsten oxide nanoneedles significantly increases sensitivity towards the vapors considered. Additionally, Au loading enhances the kinetics of surface reactions and helps decreasing response time. The detection mechanism and the role of Au nanoparticles is discussed in light of the experimental findings.