▎ 摘　　要

NOVELTY - Eggshell membrane/silver nanoparticle/graphene oxide composite biofilm comprises discarded eggshell membrane as a carrier material, and is assembled by silver nanoparticles with photothermal conversion effect and graphene oxide, and preparation of biomass membranes with synergistically enhanced photothermal conversion performance. The mass proportion of silver nanoparticles in the composite film is 0.05-1.0 wt.%. The mass ratio of graphene oxide in the composite film is 1.0-15 wt.%. The mass ratio of the eggshell membrane and its modifier in the composite membrane is 84-98 wt.%, and the mass ratio of the modifier polydiallyldimethylammonium chloride (PDDA) or polyethylenimine (PEI) to the eggshell membrane is 0-0.005. USE - Eggshell membrane/silver nanoparticle/graphene oxide composite biofilm used for solar energy (claimed). ADVANTAGE - The eggshell membrane/silver nanoparticle/graphene oxide composite biofilm realizes the enhanced photothermal effect of the eggshell membrane loaded with the two functional nano materials, and LSPR properties of silver nanoparticles can be effectively controlled by their morphology, and then the effective absorption and photothermal conversion of light energy of different wavelengths of the eggshell membrane loaded with silver nanoparticles can be adjusted. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the eggshell membrane/silver nanoparticle/graphene oxide composite biofilm, which involves: (A) using silver nitrate as a precursor to prepare anisotropic silver nanoparticles with different localized surface plasmon resonance (LSPR) properties; (B) loading anisotropic silver nanoparticles onto the eggshell membrane by self-assembly; and (C) loading graphene oxide nanosheets on the eggshell membrane by dipping and self-assembly.