Yahya, Nor Akmar Mohd and Hamid, Mohd Rashid Yusof and Ong, Boon Hoong and Rahman, Norizah Abdul and Mahdi, Mohd Adzir and Yaacob, Mohd Hanif (2020) H2 Gas Sensor Based on Pd/ZnO Nanostructures Deposited on Tapered Optical Fiber. IEEE Sensors Journal, 20 (6). pp. 2982-2990. ISSN 1530-437X, DOI https://doi.org/10.1109/JSEN.2019.2957838.
Full text not available from this repository.Abstract
A novel H2 sensor using tapered optical fiber coated with Pd/ZnO nanostructures have been developed. The ZnO nanostructures was synthesized and deposited onto tapered optical fiber via chemical bath deposition (CBD) method. The ZnO was characterized by FESEM, XRD and EDX to confirm the material properties. It was discovered that the sensor is sensitive towards different concentrations of H2 in synthetic air at 180° C of operating temperature. By varying the deposition time of ZnO coating, different thickness of ZnO layer can be obtained. It was observed that with 280 nm thickness, the maximum absorbance response can be achieved. Further investigation with sensor sample of as-prepared and annealed was carried out to study its sensing performance towards H2. The absorbance response of 280 nm thickness of annealed Pd/ZnO has increased 64% as compared to as-prepared Pd/ZnO upon 1% H2 exposure in the synthetic air when measured in the visible to near infra-red optical wavelength. It can be concluded that the Pd/ZnO optical fiber sensor with thickness around 280 nm provided better sensitivity in sensing H2 at 180°C as compared to other thicknesses investigated. © 2001-2012 IEEE.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Higher Education, Malaysia, under Grant FRGS/1/2014/TK03/ UPM/03/1 and Grant FRGS/2/2014/TK03/UPM/01/1 |
| Uncontrolled Keywords: | Optical sensors; sensing material; zinc oxide |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Deputy Vice Chancellor (Research & Innovation) Office > Nanotechnology & Catalysis Research Centre |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 05 Jun 2020 03:07 |
| Last Modified: | 05 Jun 2020 03:07 |
| URI: | http://eprints.um.edu.my/id/eprint/24677 |
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