▎ 摘　　要

NOVELTY - Plastic degradation agent comprises graphene/zinc sulfide/manganese sulfide/titanium dioxide photocatalyst, pretreatment agent, enzyme formulation, boric acid and citric acid in mass ratio 32:21-30:13-21:5-11:3-8. The graphene/zinc sulfide/manganese sulfide/titanium dioxide photocatalyst is prepared by reacting tetrabutyl titanate, zinc acetate, manganese acetate, graphene ethanol solution, water, polythiourea, acrylic acid and ethanol in mass ratio 50:32-41:18-25:10-19:12-23:76-93:2-11:280-400. The pretreatment agent is prepared by reacting 2-acrylamide-2-methylpropanesulfonic acid, acrylic acid, butyl acrylate, vinyl acetate, water, ethanol, 819 photoinitiator (acyl phosphine oxide photoinitiator) and Sr-10 emulsifier in mass ratio 12:2-7:1-6:0.5-4:39-51:12-36:0.03-0.3:3-9. The enzyme formulation is prepared by reacting extracellular hydrolase, dioxygenase, monooxygenase, oxidoreductase, bone enzyme, fatty acid oxidase, carbo resin, bone meal and water. USE - The plastic degradation agent is useful for alkaline soil remediation (claimed). ADVANTAGE - The plastic degradation agent has excellent plastic degradation performance. DETAILED DESCRIPTION - Plastic degradation agent comprises graphene/zinc sulfide/manganese sulfide/titanium dioxide photocatalyst, pretreatment agent, enzyme formulation, boric acid and citric acid in mass ratio 32:21-30:13-21:5-11:3-8. The graphene/zinc sulfide/manganese sulfide/titanium dioxide photocatalyst is prepared by reacting tetrabutyl titanate, zinc acetate, manganese acetate, graphene ethanol solution, water, polythiourea, acrylic acid and ethanol in mass ratio 50:32-41:18-25:10-19:12-23:76-93:2-11:280-400. The pretreatment agent is prepared by reacting 2-acrylamide-2-methylpropanesulfonic acid, acrylic acid, butyl acrylate, vinyl acetate, water, ethanol, 819 photoinitiator (acyl phosphine oxide photoinitiator) and Sr-10 emulsifier in mass ratio 12:2-7:1-6:0.5-4:39-51:12-36:0.03-0.3:3-9. The enzyme formulation is prepared by reacting extracellular hydrolase, dioxygenase, monooxygenase, oxidoreductase, bone enzyme, fatty acid oxidase, carbo resin, bone meal and water in mass ratio 6:2-5:2-7:1-8:1-4:1-5:0.05-0.8:3-6:51-76. An INDEPENDENT CLAIM is also included for preparing plastic degradation agent, comprising (i) adding extracellular hydrolase, dioxygenase, monooxygenase, oxidoreductase, bone enzyme formulation, fatty acid oxidase, carbo resin, bone meal and water into the reactor, maintaining the mixing temperature of the system at 30 degrees C and reacting for 45 minutes, spray-drying the product to obtain an enzymic formulation preparation, (ii) adding 2-acrylamide-2-methylpropanesulfonic acid, acrylic acid, butyl acrylate, vinyl acetate, water, ethanol, 819 photoinitiator and Sr-10 emulsifier into the reactor, stirring speed at 360 revolutions/minute, reacting at 33 degrees C for 43 minutes, irradiating the product with 100W high pressure mercury lamp for 3-10 seconds, 200 W high pressure mercury lamp for 2-8 seconds, 400 W high pressure mercury lamp for 2-7 seconds and 1000 W high pressure mercury lamp for 1-5 seconds, drying the product, pulverizing at a low temperature of -20 degrees C to obtain pretreatment agent, (iii) adding zinc acetate, manganese acetate, graphene ethanol solution, water, polythiourea, acrylic acid and ethanol into the hydrothermal reactor, maintaining the temperature of the hydrothermal reactor at 80-100 degrees C for 25-60 minutes, adding tetrabutyl titanate into hydrothermal reactor, maintaining the temperature of the hydrothermal reactor at 130-190 degrees C, treating for 3-15 hours, filtering the product, washing with water and washing with 5% acetic acid aqueous solution, after washing with ethanol, protecting the product by nitrogen, carrying out heat treatment at 100 degrees C for 1 hour, at 200 degrees C for 1 hour, at 300 degrees C for 2 hours, at 400 degrees C for 3 hours, at 500 degrees C for 3 hours, at 550 degrees C for 3 hours, crushing to obtain graphene/zinc sulfide/manganese sulfide/titanium dioxide photocatalyst and (iv) adding graphene/zinc sulfide/manganese sulfide/titanium dioxide photocatalyst, pretreatment agent, enzyme formulation, boric acid and citric acid to the mixer, mixing at 33 revolutions/minute, maintaining the system temperature at 20 degrees C to react for 25 minutes to obtain final product.