▎ 摘　　要

NOVELTY - Molybdenum disulfide/polyvinyl alcohol composite hydrogel comprises polyvinyl alcohol, molybdenum disulfide with curd-shaped three-dimensional structure or molybdenum disulfide with two-dimensional nanosheet structure. USE - As molybdenum disulfide/polyvinyl alcohol composite hydrogel. ADVANTAGE - The hydrogel adopts molybdenum disulfide with unique photothermal conversion properties under near-infrared light and has significant effect on its photothermal conversion performance, which in turn affects the self-healing time and self-healing efficiency, has fast healing speed, is completed within 5 minutes, ensures self-healing efficiency to reach up to 82%, improves the mechanical properties of polyvinyl alcohol, ensures excellent mechanical properties, such as strength and plasticity, improves the curd-like structure and nanosheet molybdenum disulfide/polyvinyl alcohol composite hydrogels, and ensures 18% increase in strength of nanosheet molybdenum disulfide/polyvinyl alcohol composite hydrogel. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing molybdenum disulfide in molybdenum disulfide/polyvinyl alcohol composite hydrogel, involving when the molybdenum disulfide is molybdenum disulfide of spherical three-dimensional structure, weighing 0.5 g ammonium molybdate and 1 g thiourea, pouring thiourea to 30 ml deionized water, and reacting at 180degrees Celsius for 12 hours to obtain spherical molybdenum disulfide.