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Theoretical and Experimental Research on Ammonia Sensing Properties of Sulfur-Doped Graphene Oxide

Authors :
Zhijia Liao
Fanli Meng
Yao Yu
Zhenyu Yuan
Source :
Chemosensors, Vol 9, Iss 220, p 220 (2021), Chemosensors, Volume 9, Issue 8
Publication Year :
2021
Publisher :
MDPI AG, 2021.

Abstract

In this paper, gas sensing characteristics of sulfur-doped graphene oxide (S-GO) are firstly presented. The results of the sensing test revealed that, at room temperature (20 °C), S-GO has the optimal sensitivity to NH3. The S-GO gas sensor has a relatively short response and recovery time for the NH3 detection. Further, the sensing limit of ammonia at room temperature is 0.5 ppm. Theoretical models of graphene and S-doped graphene are established, and electrical properties of the graphene and S-doped graphene are calculated. The enhanced sensing performance was ascribed to the electrical properties’ improvement after the graphene was S-doped.

Details

Language :
English
ISSN :
22279040
Volume :
9
Issue :
220
Database :
OpenAIRE
Journal :
Chemosensors
Accession number :
edsair.doi.dedup.....e36e3b054b16cb95661fabd50c6dfaca