▎ 摘　　要

NOVELTY - High-efficiency adsorption material comprises carboxylated nanocellulose used as a matrix, graphene oxide and polyethyleneimine are used as functional reagents, and the carboxylated nanocellulose is blended with polyethyleneimine. The blend and graphene oxide are drawn into filamentous fibers by imitating spider spinning, and the two are combined into filaments by electrostatic action, and then they are prepared by micro-crosslinking. USE - High-efficiency adsorption material for amphoteric cellulose silk used in aspect of heavy metal adsorption (claimed). ADVANTAGE - The removal rate is greater than 99.99%, and the heavy metal ion concentration after removal reaches the national drinking water standard and its regeneration stability is good, after 10 times of regeneration, its regeneration rate is still greater than 95%. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing amphoteric cellulose silk high-efficiency adsorption material, which involves: (A) blending carboxylated nanocellulose and polyethyleneimine, and then drawing the blend and graphene oxide into filamentous fibers by imitating spider spinning, and the two are combined into filaments through electrostatic interaction; and (B) spraying surface of the silk product with glutaraldehyde, a crosslinking agent, and drying to form solid filaments to prepare amphoteric cellulose silk high-efficiency adsorption material.