▎ 摘　　要

NOVELTY - Preparing composite gel based on graphite alkyne-coated structure comprises (i) carrying out coupling reaction to oxidized graphene and hexacetenyl benzene monomer, growing the graphitealkyne on the surface of the oxidizing graphene to obtain graphite alkene coated oxidation graphene, (ii) further taking graphene oxide, introducing the graphene oxide graphene by the other graphene and coupling reaction into the pure water, ultrasonically mixing to obtain the mixed dispersion, (iii) introducing polyvinyl alcohol aqueous solution into the mixture, ultrasonic mixing and transferring to the reaction vessel, (iv) placing the sealed reaction kettle into blast drying box for hydrothermal reaction to obtain a gel, and (v) performing freeze-drying treatment after cleaning the gel structure. USE - Preparation method of composite gas gel based on graphite alkyne-based structure used in photo-thermal evaporation material for converting absorbed sunlight into heat to heat and evaporate sea water. ADVANTAGE - The method can effectively suppress thermal dissipation and improve the photo-thermal conversion efficiency of the resulting composite aerogel. This is achieved through the use of a specific sequence of steps, including growing graphene on the surface of graphene oxide, coupling the resulting graphene oxide with additional graphene oxide, adding a polyvinyl alcohol aqueous solution to the resulting mixture, and subjecting the mixture to a hydrothermal reaction followed by freeze-drying to obtain the composite aerogel. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a composite aerogel containing graphene acetylene-coated reduced graphene oxide and reduced graphene oxide, prepared by above-mentioned method. DESCRIPTION OF DRAWING(S) - The drawing shows a flow chart of the preparation method of composite gas gel based on graphite alkyne-based structure. (Drawing includes non-English language text).