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Synthesis of ZnO Nanostructures for Low Temperature CO and UV Sensing
Thin Films Technology Laboratory, Department of Physics, COMSATS Institute of Information Technology, Islamabad 44000, Pakistan
Alamoudi Water Chair, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
Centre for Micro & Nano Devices, Department of Physics, COMSATS Institute of Information Technology, Islamabad 44000, Pakistan
Center of Excellence for Research in Engineering Materials (CEREM), King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia
* Author to whom correspondence should be addressed.
Received: 26 August 2012; in revised form: 10 October 2012 / Accepted: 10 October 2012 / Published: 16 October 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.
Keywords: ZnO nanostructures; gas sensor; CO sensor; UV sensor; optical properties
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MDPI and ACS Style
Amin, M.; Manzoor, U.; Islam, M.; Bhatti, A.S.; Shah, N.A. Synthesis of ZnO Nanostructures for Low Temperature CO and UV Sensing. Sensors 2012, 12, 13842-13851.
Amin M, Manzoor U, Islam M, Bhatti AS, Shah NA. Synthesis of ZnO Nanostructures for Low Temperature CO and UV Sensing. Sensors. 2012; 12(10):13842-13851.
Amin, Muhammad; Manzoor, Umair; Islam, Mohammad; Bhatti, Arshad S.; Shah, Nazar A. 2012. "Synthesis of ZnO Nanostructures for Low Temperature CO and UV Sensing." Sensors 12, no. 10: 13842-13851.