▎ 摘　　要

NOVELTY - Graphene-coated biomass fiber aerogel interface photo-thermal conversion material comprises a biomass fiber substrate and a graphene layer coated on the biomass fiber substrate. The biomass fiber substrate is a tubular wood fiber or bamboo fiber. The graphene layer graphene is sheet-shaped. USE - Graphene-coated biomass fiber aerogel interface photo-thermal conversion material used in seawater desalination and wastewater treatment (claimed). ADVANTAGE - The graphene-coated biomass fiber aerogel interface photo-thermal conversion material is rich in raw material source, easy to prepare and process, green and environment-friendly. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing graphene-coated biomass fiber aerogel interface photo-thermal conversion material, which involves: (A) extracting the biomass fiber from the biomass raw material; (B) dispersing biomass fiber and soaking in the metal salt solution, combining, filtering and washing to obtain the metal ion modified biomass fiber; (C) placing the metal ion modified biomass fiber in the graphene oxide aqueous solution, stirring to obtain graphene oxide coated biomass fiber; (D) mixing the graphene oxide coated biomass fiber with reducing agent solution, standing and reacting, filtering to obtain graphene coated biomass fiber; and (E) heating the graphene-coated biomass fiber at 60-90 degrees C in water bath, forming hydrogel, freezing and drying to obtain the graphene-coated biomass fiber aerogel interface photo-thermal conversion material.