Bismuth doped SnS2 nanoflower for real-time NO2 monitoring at room-temperature

Tan, Jianfeng; Ma, Weijia; Meng, Gaoxiang; Tian, Congkui; Wang, Yin; Wang, Yan; Liu, Zhuo

doi:10.1016/j.matlet.2023.133973

Cited by 5 publications

(1 citation statement)

References 8 publications

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“…For detecting NO 2 at room temperature, other alternatives to MOX sensors have been investigated, such as chemiresistors. Among these alternatives, it is worth mentioning graphene [18], MXenes [19], transition metal dichalcogenides [20][21][22] or a combination of these [23]. Graphene has attracted great research efforts as an alternative to overcome some of the limitations experienced with MOX sensors.…”

Section: Introductionmentioning

confidence: 99%

ZnO-Loaded Graphene for NO2 Gas Sensing

Alouani,

Casanova-Cháfer,

Güell

et al. 2023

Sensors

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This paper investigates the effect of decorating graphene with zinc oxide (ZnO) nanoparticles (NPs) for the detection of NO2. In this regard, two graphene sensors with different ZnO loadings of 5 wt.% and 20 wt.% were prepared, and their responses towards NO2 at room temperature and different conditions were compared. The experimental results demonstrate that the graphene loaded with 5 wt.% ZnO NPs (G95/5) shows better performance at detecting low concentrations of the target gas than the one loaded with 20 wt.% ZnO NPs (G80/20). Moreover, measurements under dry and humid conditions of the G95/5 sensor revealed that the material is very sensitive to ambient moisture, showing an almost eight-fold increase in NO2 sensitivity when the background changes from dry to 70% relative humidity. Regarding sensor selectivity, it presents a significant selectivity towards NO2 compared to other gas compounds.

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