Enhanced Free-Radical Generation on MoS2 /Pt by Light and Water Vapor Co-Activation for Selective CO Detection with High Sensitivity

© 2023 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 35(2023), 30 vom: 03. Juli, Seite e2303523
1. Verfasser: Xia, Yi (VerfasserIn)
Weitere Verfasser: Guo, Shenghui, Yang, Li, He, Sufang, Zhou, Liexing, Wang, Mingjun, Gao, Jiyun, Hou, Ming, Wang, Jing, Komarneni, Sridhar
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article MoS2/Pt free radicals light selective CO sensing water vapor
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520 |a Semiconductor-based gas sensors hold great promise for effective carbon monoxide (CO) detection. However, boosting sensor response and selectivity remains a key priority in moist conditions. In this study, a composite material, Pt quantum dots decorated MoS2 nanosheets (MoS2 /Pt), is developed as a highly sensitive material for CO detection when facilitated with visible light. The MoS2 /Pt sensor shows a significantly improved response (87.4%) with impressive response/recovery kinetics (20 s/17 s), long-term stability (60 days), and good selectivity to CO at high humidity (≈60%). It is confirmed both experimentally and theoretically that the MoS2 /Pt surface lowers the activation energy to convert CO to CO2 via the free radicals induced by the synergy of photochemical effects and water vapor. As a result, the MoS2 /Pt surface promotes both CO response and selectivity, providing fundamental clues to improve room-temperature semiconductor-based sensors for gas detection under extreme conditions 
650 4 |a Journal Article 
650 4 |a MoS2/Pt 
650 4 |a free radicals 
650 4 |a light 
650 4 |a selective CO sensing 
650 4 |a water vapor 
700 1 |a Guo, Shenghui  |e verfasserin  |4 aut 
700 1 |a Yang, Li  |e verfasserin  |4 aut 
700 1 |a He, Sufang  |e verfasserin  |4 aut 
700 1 |a Zhou, Liexing  |e verfasserin  |4 aut 
700 1 |a Wang, Mingjun  |e verfasserin  |4 aut 
700 1 |a Gao, Jiyun  |e verfasserin  |4 aut 
700 1 |a Hou, Ming  |e verfasserin  |4 aut 
700 1 |a Wang, Jing  |e verfasserin  |4 aut 
700 1 |a Komarneni, Sridhar  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Advanced materials (Deerfield Beach, Fla.)  |d 1998  |g 35(2023), 30 vom: 03. Juli, Seite e2303523  |w (DE-627)NLM098206397  |x 1521-4095  |7 nnas 
773 1 8 |g volume:35  |g year:2023  |g number:30  |g day:03  |g month:07  |g pages:e2303523 
856 4 0 |u http://dx.doi.org/10.1002/adma.202303523  |3 Volltext 
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