Boosting the response characteristics towards rapid detection of NO2 gas molecules utilizing 2D - WS2/rGO hybrid nanocomposites at ambient environment

被引：3
作者：
Patrick, D. Simon [1 ,2 ,3 ]
Archana, J. [1 ,3 ]
Navaneethan, M. [1 ,2 ,3 ]
Mohan, M. Krishna [1 ,3 ]
机构：
[1] SRM Inst Sci & Technol, Dept Phys & Nanotechnol, Funct Mat & Energy Devices Lab, Kattankulathur 603203, India
[2] SRM Inst Sci & Technol, Nanotechnol Res Ctr NRC, Kattankulathur 603203, India
[3] SRM Inst Sci & Technol, Fac Engn & Technol, Ctr Excellence Mat & Adv Technol CeMAT, Kattankulathur 603203, India
来源：
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2024年 / 12卷 / 05期
关键词：
Gas sensors; Nitrogen dioxide; Tungsten disulphide; Heterojunction; REDUCED GRAPHENE OXIDE; TUNGSTEN DISULFIDE; QUANTUM DOTS; WS2; TEMPERATURE; NANOSHEETS; MONOLAYER; STABILITY; SENSORS; NH3;
D O I：
10.1016/j.jece.2024.113367
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this work, we have fabricated hybrid nanocomposites of WS 2 /rGO using facile hydrothermal method for room temperature based NO 2 gas detection. The synthesized WS 2 /rGO nanocomposites showed p-type response with improved sensitivity and selectivity towards NO 2 gas. The pristine WS 2 nanosheets showed response around 21 % whereas the WS 2 /rGO nanocomposites showed an improved response of 82 % towards 10 ppm NO 2 gas molecules. The response and recovery time towards 10 ppm NO 2 gas was around 26 s/553 s and 58 s/627 s for pristine WS 2 and WS 2 /rGO nanocomposites, respectively. The prepared WS 2 /rGO nanocomposites showed high selectivity towards NO 2 gas. Further, the long-term stability and repeatability studies were carried out and the results indicate the potential utilization of WS 2 /rGO nanocomposite towards NO 2 gas detection at room temperature.
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页数：9
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