▎ 摘　　要

NOVELTY - Graphene photocatalyst composite material comprises adsorption carrier, where graphene bottom layer, catalyst layer and sterilization layer are sequentially arranged on adsorption carrier; adsorption carrier is provided with plurality of micropores; graphene bottom layer comprises 800-1000 pts. wt. polymer emulsion, 1500-4000 pts. wt. solid adsorbent and 15-500 pts. wt. graphene raw material A; catalyst layer comprises 100-250 pts. wt. polymer emulsion, 10-30 pts. wt. nano titanium dioxide, 30-60 pts. wt. nano zinc oxide, 20-50 pts. wt. graphene raw material B' and 5-25 pts. wt. carbon nanotube material. USE - Graphene photocatalyst composite material used as catalyst for decomposition of organic matter, and adsorption type material for air purification (all claimed). ADVANTAGE - The graphene photocatalyst composite material enables to solve problems of low catalytic efficiency and weak virus killing capability of catalytic plate material; adsorbs viruses, promotes chemical decomposition of organic matters by using substances such as graphene; and is matched with methods such as using nano-silver virus-damaging bacteria DN, where sterilization rate is improved, and effective rate of killing viruses reaches 99.99%. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) a method for preparing graphene photocatalyst composite material, which involves: (a) mixing uniformly 800-1000 pts. wt. polymer emulsion, 1500-4000 pts. wt. solid adsorbent, 15-500 pts. wt. graphene raw material A and 300-1500 pts. wt. deionized water to form mixed solution A, placing adsorption carrier into mixed solution A for adsorption and soaking, taking out and drying to obtain graphene base material consisting of graphene bottom layer and adsorption carrier; (b) mixing uniformly 100-250 pts. wt. polymer emulsion, 10-30 pts. wt. nano titanium dioxide, 30-60 pts. wt. nano zinc oxide, 20-50 pts. wt. graphene raw material B', 5-25 pts. wt. carbon nanotube material and 1000-2000 pts. wt. deionized water to form mixed solution C', coating mixed solution C' on graphene raw material, and drying to form catalyst layer; and (c) coating nano silver ionic liquid on surface of catalyst layer, and drying to form antibacterial layer; (2) a catalyst for decomposition of organic matter, which comprises graphene photocatalyst composite material; (3) a adsorption type material for air purification, which comprises graphene photocatalyst composite material.