Construction of MoS2/SnO2 heterostructures for sensitive NO2 detection at room temperature

Socio-economic demands and challenges for non-invasive disease diagnosis through a portable breathalyzer by the incorporation of 2D nanosheets and SMO nanocomposites

“…The authors speculated the enlargement of surface area by the incorporation of SnO 2 on MoS 2 nanosheets and the p-n heterojunction changed the electronic properties locally. 145 The humidity sensing property of WS 2 /SnO 2 revealed the importance of 2DM/SMO composites, where a signicant improvement in sensing performances (862.8 times) were observed compared to standalone SMO or 2DM. 146 Moreover, with much electronegative in nature, SnS 2 was made composite with SnO 2 to improve the selectivity towards ammonia and NO 2 .…”

Improving Gas-Sensing Performance Based on MOS Nanomaterials: A Review

“…Inspired by the appealing properties of graphene, researchers have made great efforts in exploring other 2D nanomaterials for gas sensing such as 2D metal dichalcogenides [17]. Han et al [137] made a MoS 2 -SnO 2 heterostructure gas sensor. It was able to detect NO 2 at room temperature, and the response to 5 ppm of NO 2 was 18.7.…”

“…The mechanism is due to the formation of heterojunctions. Under the action of heterojunction, response, selectivity, and operation temperature have been improved in varying degrees [137][138][139]. More details about heterojunctions can be found in Section 3.4.…”

“…According to different responses to multiple gases, we could ensure it had a good selectivity to ammonia in multiple gases (including acetone, The mechanism is due to the formation of heterojunctions. Under the action of heterojunction, response, selectivity, and operation temperature have been improved in varying degrees [137][138][139]. More details about heterojunctions can be found in Section 3.4.…”

Iodide-substitution-induced phase transition of chemical-vapor-deposited MoS2

“…Owing to the excellent electrical and optical properties of MoS 2 , there has been considerable research into electrical devices, gas sensors and integrated circuits based on MoS 2 . 10–15…”