▎ 摘　　要

NOVELTY - Adsorbent material comprises 3-8 pts. wt. graphene oxide, 2-11 pts. wt. beta -cyclodextrin, 10-15 pts. wt. chitosan, 1-5 pts. wt. silane coupling agent, 15-25 pts. wt. acetic acid, 3-7 pts. wt. stearic acid amide, 1-4 pts. wt. methyl benzoate, 3-6 pts. wt. manganese dioxide and 12-20 pts. wt. nano diatomaceous earth, where nano diatomaceous earth has particle size of 300-500 mesh. USE - The adsorbent material is useful for treating lead-containing wastewater (claimed). ADVANTAGE - The adsorbent material: has high porosity, high specific surface area, strong adsorption capacity, fast and efficient adsorption process, and is environmentally friendly.