Abstract
More and more researchers are paying attention to the two-dimensional layered MoS2 which has a similar structure to graphene and its composite materials. The ZnO nanoparticles-coated MoS2 nanosheets were successfully fabricated by two step hydrothermal method. The morphology and microstructure were characterized by X-ray diffraction (XRD), energy dispersive spectroscopy (EDS), X-ray photoelectron spectra (XPS), field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM). Results show that the ZnO-coated MoS2 nanosheets are about 500 nm in diameter, which is constructed by relatively densely packed nanosheets with the thickness of around 5–10 nm. The scale of ZnO nanoparticles are about 8 nm. Furthermore, owing to the supporting substrate of specific two-dimensional MoS2 nanosheets, the sensor based on ZnO nanoparticles-coated MoS2 nanosheets exhibit superior gas sensing performance towards ethanol and it maybe have potential applications in the detection of ethanol vapors.
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