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- W4289933198 abstract "Ethanol, as one of the common volatile organic compounds (VOCs), has serious harm to the human central nervous system. The high-efficiency detection of ethanol gas at room temperature (RT) has attracted widespread attention in the field of current gas-sensing detection. Here, we designed and prepared ternary nanocomposites constructed with two-dimensional MXene and MoO2/MoO3 nanosheets, which can be used in the field of low-concentration ethanol detection at RT. The MoO2/MoO3/MXene nanocomposites make full use of the excellent electrical conductivity and large specific surface area of MXene, which provides more active adsorption sites and reaction centers. Moreover, the construction of n-n heterojunctions between uniformly grown MoO2 and MoO3 nanosheets significantly enhances the response of the sensor. The gas sensing results revealed that MoO2/MoO3/MXene nanocomposites showed high response (Ra/Rg = 19.77 @200 ppm) to ethanol at RT, with a detection limit of 5 ppm (Ra/Rg = 2.07). At the same time, the sensor also has excellent selectivity and fast response-recovery to ethanol (46 s/276 s). Further, the possible gas sensing mechanism of the composites was proposed and discussed. This work suggests the promising applications of metal oxides heterojunctions/2D hybrid materials for VOCs gas sensing detection at RT." @default.
- W4289933198 created "2022-08-06" @default.
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- W4289933198 date "2022-12-01" @default.
- W4289933198 modified "2023-10-07" @default.
- W4289933198 title "MoO2/MoO3/MXene ternary nanocomposites for high-performance ethanol detection at room temperature" @default.
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- W4289933198 doi "https://doi.org/10.1016/j.jallcom.2022.166663" @default.
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