▎ 摘　　要

NOVELTY - A biomass porous carbon micro-sphere-based anode active material is prepared by adding N,N-dimethyl formamide solvent into the reaction bottle, diisocyanate compound, beta -cyclodextrin and dibutyltin laurate, in the nitrogen reaction device, heating to 70-90 degrees C, reacting for 24-48 hours to obtain a cross-linked beta -cyclodextrin microsphere, adding deionized water into the reaction bottle, microspheres and potassium hydroxide, stirring for 6-12 hours, vacuum drying to remove water, putting the mixed product into an atmosphere furnace for carbonization treatment to obtain the biomass porous carbon microsphere, adding biomass porous carbon microsphere and sublimed sulfur into the reaction kettle, heating to 150-160 degrees C, for 10-15 hours for performing sulfur melting and permeating process and cooling. USE - Biomass porous carbon microsphere based anode active material for anode of lithium sulfur battery (claimed) and for water pollution treatment. ADVANTAGE - The biomass porous carbon micro-sphere based anode active material has a unique cavity structure, and rich carboxyl and hydroxyl functional groups, excellent adsorption effect and electrostatic attraction effect with respect to organic dye such as methylene blue and cupric ions and other heavy metal ions, thus ensuring high-efficient water pollution treatment. The graphene oxide and cyclodextrin are organically combined through chemical bond grafting method which improves the dispersibility of graphene oxide in beta -cyclodextrin hydrogel, reducing the phenomenon of agglomeration, and avoiding phase separation of carboxyl functional graphene oxide and beta -cyclodextrin hydrogel.