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- W4322505762 abstract "The current research work reports on the detection of liquefied petroleum gas (LPG) at room temperature. The ZnO/NiO heterostructure was synthesized via green method and characterized by various techniques. The surface morphological and structural analysis has been performed by scanning electron microscope, transmission electron microscope and X-ray diffractometer. The Rietveld refinement analysis confirmed the polycrystalline nature of ZnO/NiO and existing hexagonal (ZnO) and cubic (NiO) crystal structures. The optical properties were analyzed by UV–visible spectroscopy and optical band gap of ZnO, NiO and ZnO/NiO were found to be 3.62 eV, 3.81 eV and 3.71 eV respectively. The DFT analysis was performed by B3LYP/LAN2DZ basis set with the interaction from LPG of ZnO, NiO and ZnO/NiO composite for better understanding of the sensing characteristics of devices. The ZnO, NiO, and ZnO/NiO were investigated for the detection of the LPG from below lower explosion limit (LEL) i.e. 0.5 vol% to 2.5 vol%. Sensor response of ZnO/NiO heterostructure-based sensor was found 7.72 at 2.5 vol% which is 2.6 times higher than pure ZnO and NiO. The fast response and recovery times of ZnO/NiO were found to 7.83 s and 11.01 s, respectively at 0.5 vol% LPG. Also, the ZnO/NiO is highly selective for LPG in comparison to other analytes like ethanol, acetone, ammonia, and CO2 etc. Thus ZnO/NiO heterostructures can be effectively used for the detection of LPG at room temperature against below LEL." @default.
- W4322505762 created "2023-02-28" @default.
- W4322505762 creator A5053738359 @default.
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- W4322505762 date "2023-05-01" @default.
- W4322505762 modified "2023-09-30" @default.
- W4322505762 title "Green synthesized ZnO/NiO heterostructures based quick responsive LPG sensor for the detection of below LEL with DFT calculations" @default.
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- W4322505762 doi "https://doi.org/10.1016/j.rsurfi.2023.100103" @default.
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