▎ 摘　　要

Here we design and fabricate the hybrid sensor based on molybdenum disulfide (MoS2)/graphene and evaluate the gas sensing permanence of various types of gases (LPG, ethanol, methanol, acetone, CO, and NO2) using a resistive gas sensor. The structural, morphological, elementary composition and textural properties of the sensors was systematically investigated through X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), Raman spectra and N-2 adsorption-desorption analysis. The fabricated hybrid sensor showed superior LPG gas sensing performance such as high sensitivity (12.2%), fast response (15 s) and recovery time (22 s) compared to H-2 gas. Because of the high surface area of the hybrid sensor (78 m(2)/g) with a small pore size (35.45 nm), this outstanding performance is attributed to the combination of MoS2 spherical nanoparticles with 2D graphene layer providing a large active surface area that allows for additional absorption properties of gas molecules during chemical reaction. Studies of stability and selectivity further show that the fabricated MoS2/graphene hybrid sensor can be preferred for high-performance LPG sensor applications and home safety. It also deals with the process of present sensing.