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Synthesis of ZnO Nanostructures for Low Temperature CO and UV Sensing

Authors :
Nazar Abbas Shah
Umair Manzoor
Arshad Saleem Bhatti
Mohammad Islam
Muhammad Amin
Source :
Sensors, Vol 12, Iss 10, Pp 13842-13851 (2012)
Publication Year :
2012
Publisher :
MDPI AG, 2012.

Abstract

In this paper, synthesis and results of the low temperature sensing of carbon monoxide (CO) gas and room temperature UV sensors using one dimensional (1-D) ZnO nanostructures are presented. Comb-like structures, belts and rods, and needle-shaped nanobelts were synthesized by varying synthesis temperature using a vapor transport method. Needle-like ZnO nanobelts are unique as, according to our knowledge, there is no evidence of such morphology in previous literature. The structural, morphological and optical characterization was carried out using X-ray diffraction, scanning electron microscopy and diffused reflectance spectroscopy techniques. It was observed that the sensing response of comb-like structures for UV light was greater as compared to the other grown structures. Comb-like structure based gas sensors successfully detect CO at 75 °C while other structures did not show any response.

Details

Language :
English
ISSN :
14248220
Volume :
12
Issue :
10
Database :
Directory of Open Access Journals
Journal :
Sensors
Publication Type :
Academic Journal
Accession number :
edsdoj.414ba29d28b044c7abfa3e73493621be
Document Type :
article
Full Text :
https://doi.org/10.3390/s121013842