▎ 摘　　要

NOVELTY - Three-dimensional porous structure of graphene diatomite composite adsorbed microsphere is claimed. The size of the microsphere is 0.1-5 mm, internal structure is a three-dimensional porous structure, and adsorption rate for methylene blue is greater than 99% within 48 hours. USE - Used as three-dimensional porous structure of graphene diatomite composite adsorbed microsphere. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparation of three-dimensional porous structure graphene diatomite composite adsorbing microsphere comprising (i) dissolving sodium alginate and deionized water in a ratio of 2.5:100-400 and allowing to stand, (ii) dispersing 0.15 g graphene oxide in 50 ml deionized water for 2 hours, then adding into aqueous sodium alginate solution obtained in step (i), then adding 5-15 g diatomaceous earth and ultrasonic stirring for 20 minutes, (iii) dissolving 5 g calcium chloride in 100 ml deionized water and allowing to stand, (iv) adding oxidized graphene diatomite sodium alginate mixed solution obtained in step (ii) into 5% calcium chloride solution prepared in step (iii), reacting for 30-120 minutes, then washing for 2-3 times with deionized water, and (v) treating the product prepared in step (iv) at a microwave power of 600-1200 W for 10-30 minutes to obtain final product.