▎ 摘　　要

NOVELTY - Preparing biomass-based graphene segments involves crushing the biomass material, cleaning with de-ionised water in according to solid-liquid ratio of 1-100%, mixing and drying to obtain uniform suspension liquid. The obtained suspension liquid is placed in the polyethylene liner reactor and reacted at 100-200 degrees C for 2-10 hours. The obtained product is placed under microwave condition at 500-2000 Watt for 10-300 minutes to obtain hydroxyl and carbonyl as main functional biomass-based graphene fragment solution. USE - Method for preparing biomass-based graphene segments for preparing modified inorganic material (claimed). ADVANTAGE - The method enables to prepare biomass-based graphene segments increases applicability and has good adsorption performance. DETAILED DESCRIPTION - Preparing biomass-based graphene segments involves crushing the biomass material, cleaning with de-ionised water in according to solid-liquid ratio of 1-100%, mixing and drying to obtain uniform suspension liquid. The obtained suspension liquid is placed in the polyethylene liner reactor and reacted at 100-200 degrees C for 2-10 hours. The obtained product is placed under microwave condition at 500-2000 Watt for 10-300 minutes to obtain hydroxyl and carbonyl as main functional biomass-based graphene fragment solution. The obtained product is filtered to remove un-reacted large particles and dried to obtain biomass-based graphene fragment powder. The drying method is protected the fine structure and surface functional group of biomass-based graphene fragments. An INDEPENDENT CLAIM is included for a method for preparing adsorbent, which involves: (A) using biomass-based graphene fragment powder and arranging biomass-based graphite at a solid-liquid ratio of 1-100%; and (B) using in the synthetic process of the inorganic adsorbent material or the existing inorganic adsorbent material modification process to obtain inorganic adsorbent material biomass-based graphene fragment having lattice defect or pore structure modified.