▎ 摘　　要

NOVELTY - Graphene-containing nanocrystalline purification particle comprises 45-55 pts. wt. sepiolite, 10-12 pts. wt. attapulgite, 8-12 pts. wt. pure diatom, 1-2 pts. wt. graphene, 8-12 pts. wt. photocatalyst and 0.1-0.2 pts. wt. normal-methylmorpholine N-oxide crystal. USE - Used as graphene-containing nanocrystalline purification particle. ADVANTAGE - The particle has adsorption of formaldehyde, benzene, toxic volatile organic compound and other harmful gases, and efficient adsorption of toxic and harmful gases. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing graphene-containing nanocrystalline purification particle comprising (i) drying 45-55 pts. wt. sepiolite, 10-12 pts. wt. attapulgite, 8-12 pts. wt. pure diatom, 1-2 pts. wt. graphene, 8-12 pts. wt. photocatalyst and 0.1-0.2 pts. wt. normal-methylmorpholine N-oxide crystal in sun, where water content of each ingredient does not exceed 1%, (ii) crushing dried ingredients, smashing particle size of not greater than 300 mesh, and crushing using ball mill, (iii) pouring crushed ingredients into pure water, and then stirring at high-speed, stirring to remove impurities by ultrasonic treatment and then drying aqueous solution, then subjecting to powder treatment to obtain purified powder, (iv) adding purified powder into aluminum sulfate aqueous solution, stirring into spherical particles, where spherical particles has diameter of 2 mm, and error does not exceed 0.2 mm, (v) performing pre-sintering treatment of spherical particles, drying at not greater than 300 degrees C for 20-30 minutes, and (vi) placing dried spherical particles in activation furnace for high temperature sintering, where sintering temperature is 650-750 degrees C, sintering time is 30-40 minutes, insulating after sintering for 1 hour.