2014-Sustainable Industrial Processing Summit
SIPS 2014 Volume 5: Composite, Ceramic, Quasi-crystals, Nanomaterials & Coatings
| Editors: | Kongoli F |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2014 |
| Pages: | 578 pages |
| ISBN: | 978-1-987820-07-2 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
CD shopping page
Pt/NiO/MWCNTs composite based room temperature Hydrogen gas sensor
Shivani Dhall1;1NIT, KURUKSHETRA, Kurukshetra, India;
Type of Paper: Regular
Id Paper: 202
Topic: 14
Abstract:
NiO Oxide/multi-walled carbon nanotubes (NiO/MWCNTs) nanocomposite was prepared via precipitation method. This composite has been characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD) technique. The sensing and electrical properties of NiO/MWCNTs composite film dropped on fabricated gold interdigitated electrodes (IDEs) were analysed at room temperature conditions. The sensitivity and electrical properties of NiO/MWCNTs increased to a higher value after the deposition of platinum (Pt) nanoclusters.
The repeatability and low recovery time in N2 atmosphere of this sensor (Pt/NiO/MWCNTs) are the main advantages for the detection of low concentrations (0.05-1%) of H2 gas at the room temperature conditions. In this paper, a simple mechanism, in which H2 molecules are firstly adsorbed via Pt metal and then diffused into NiO nanoparticles with nanotubes providing better pathway to the charge flow, was proposed for H2 sensors.