Synthesis of ZnO Nanostructures for Low Temperature CO and UV Sensing

Sensors

Muhammad Amin³  Umair Manzoor⁴  Mohammad Islam²  Arshad Saleem Bhatti¹ 

[1] Centre for Micro & Nano Devices, Department of Physics, COMSATS Institute of Information Technology, Islamabad 44000, Pakistan; E-Mail:;Center of Excellence for Research in Engineering Materials (CEREM), King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia; E-Mail:;Thin Films Technology Laboratory, Department of Physics, COMSATS Institute of Information Technology, Islamabad 44000, Pakistan; E-Mails:;Alamoudi Water Chair, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia

关键词: ZnO nanostructures;    gas sensor;    CO sensor;    UV sensor;    optical properties;   

DOI  :  10.3390/s121013842

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.