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Sensors 2017, 17(7), 1577; doi:10.3390/s17071577

CeO2 Enhanced Ethanol Sensing Performance in a CdS Gas Sensor

1
The School of Physics Science and Technology, Xinjiang University, Urumqi 830046, China
2
Xinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics & Chemistry, CAS, Urumqi 830011, China
*
Author to whom correspondence should be addressed.
Received: 5 June 2017 / Revised: 29 June 2017 / Accepted: 3 July 2017 / Published: 5 July 2017
(This article belongs to the Collection Gas Sensors)
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Abstract

CdS nanowires (NWs) were fabricated through a facile low-temperature solvothermal method, following which CeO2 nanoparticles were modified on the NWs. The ethanol sensing characteristics of pure CdS and decorated ones with different CeO2 content were studied. It was found that the sensing performance of CdS was significantly improved after CeO2 decoration. In particular, the 5 at% CeO2/CdS composite exhibited a much higher response to 100 ppm ethanol (about 52), which was 2.6 times larger than that of pure CdS. A fast response and recovery time (less than 12 s and 3 s, respectively) were obtained as well as an excellent selectivity. These results make the CeO2-decorated CdS NWs good candidates for ethanol sensing applications. View Full-Text
Keywords: ethanol sensors; nanowires; CdS; CeO2 ethanol sensors; nanowires; CdS; CeO2
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Li, M.; Ren, W.; Wu, R.; Zhang, M. CeO2 Enhanced Ethanol Sensing Performance in a CdS Gas Sensor. Sensors 2017, 17, 1577.

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