▎ 摘　　要

NOVELTY - Preparation of controlled release heavy metal ion slime stripper involves immersing chloropropylated silica gel in polyethylenimine solution, filtering, obtaining porous silica gel, adding to a sand core funnel, adding 500-600 mL aqueous suspension of oxidized nanofibers and graphene oxide, filtering, and washing. The chloropropylated silica gel is prepared by adding 100-120 mL sodium silicate solution to a three-neck flask, adjusting pH with hydrochloric acid, stirring at 350-400 rpm for 30-40 minutes, drying, obtaining nano silica gel, adding 200-220 g nano silica gel to 400-450 mL methanesulfonic acid aqueous solution, stirring for 20-30 minutes, mixing with chloropropyltrimethoxysilane to obtain a reaction material, adding 200-250 g reaction material to 400-420 mL xylene, and mixing. USE - Preparation of controlled release heavy metal ion slime stripper. ADVANTAGE - The method enables safe and environmentally-friendly preparation of controlled release heavy metal ion slime stripper having excellent chelation effect of metal ion and inhibitory effect on aquatic algae and bacteria. DETAILED DESCRIPTION - Preparation of controlled release heavy metal ion slime stripper involves immersing chloropropylated silica gel in polyethylenimine solution, filtering, obtaining porous silica gel, adding to a sand core funnel, adding 500-600 mL aqueous suspension of oxidized nanofibers and graphene oxide, filtering, and washing. The chloropropylated silica gel is prepared by adding 100-120 mL sodium silicate solution to a three-neck flask, adjusting pH with hydrochloric acid, stirring at 350-400 rpm for 30-40 minutes, drying, obtaining nano silica gel, adding 200-220 g nano silica gel to 400-450 mL methanesulfonic acid aqueous solution, stirring for 20-30 minutes, mixing resultant activated silica gel with chloropropyltrimethoxysilane to obtain a reaction material, adding 200-250 g reaction material to 400-420 mL xylene, and mixing. The oxidized nanofibers are prepared by adding 40-50 g needle wood leaves to a mortar, mixing for 30- 45 minutes, washing with 100-150 mL distilled water, obtaining nanofiber slurry, heating, drying, obtaining nano cellulose, adding 100-120 g Bassia scoparia and 300-350 mL deionized water to flask, washing for 15-20 minutes, filtering, heating, obtaining an extract, drying, obtaining liquid powder, adding 20-25 g nano cellulose to a beaker containing 400-450 mL distilled water, adding 0.8-1 g tetramethylpiperidine, and 4-6 g sodium bromide, stirring for 20-30 minutes, adding 50-60 mL sodium hypochlorite solution, adjusting pH with sodium hydroxide solution, reacting, adding 100-120 mL anhydrous ethanol, stirring for 10-15 minutes, 30-35 pts. wt. resultant product, 10-12 pts. wt. gelatin solution, 20-25 pts. wt. liquid powder, 15-20 pts. wt. solid hydrogen peroxide, 100-120 pts. wt. deionized water, and 10-15 pts. wt. tea polyphenol, mixing, centrifuging, and washing with deionized water.