▎ 摘　　要

NOVELTY - An organic silver and graphene composite circulating water treatment agent comprises 40-50 pts. wt. graphene oxide, 12-20 pts. wt. acrylamide oligomer, 20-40 pts. wt. mixed graphene oxide, 15-30 pts. wt. organic silver, and 20-30 pts. wt. sodium bicarbonate. USE - Organic silver and graphene composite circulating water treatment agent. ADVANTAGE - The organic silver and graphene composite circulating water treatment agent uses ultrasonically peeled graphene to avoid the defects introduced in the oxidation process. The electrophoretic deposition method makes the organic silver particles uniformly compounded in the graphene layer, avoids the problem of graphene agglomeration, and has simple process, and easy expansion of production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for using the organic silver and graphene composite circulating water treatment agent, which involves: (1) preparing an organic carrier by dissolving a silver ion salt in an organic solvent to obtain a silver ion salt solution, where the weight ratio of the organic solvent to the silver ion salt is 1 g:1 l, adding the silver ion salt solution to a graphene dispersion to make the silver ion concentration to 0.1-10 mmol/l, controlling the temperature at 20-40 degrees C and the ultrasonic power at 200W for 30 minutes to carry out ultrasonic treatment, so that the graphene absorb silver ions and become positively charged to obtain a positively charged graphene dispersion; (2) preparing a base silver paste by taking 30 g organic carrier solution prepared in step (1), adding to a 200 ml beaker, continuously and slowly stirring, sequentially adding 2 g turpentine and 0.3 g methyl silicone oil to the carrier solution, stirring at high speed until the mixture is uniform, weighing 10 g graphene microchips, slowly adding, continuously stirring at high speed until the graphene microchips are evenly dispersed in the carrier, then weighing 60 g silver-plated glass powder (where the weight ratio of silver plating is 40%), slowly adding, continuously stirring at high speed until the silver-plated glass powder is evenly dispersed in the carrier to obtain silver-white slurry, then transferring the slurry to a three-roller machine for repeated rolling, dispersing, grinding until the fineness measured with a scraper fineness meter is less than 5 mu m, and finally collecting more than 100 g base silver paste with uniformly dispersed particles; and (3) preparing a terminal silver paste by using the positively charged graphene dispersion obtained in step (2) as an electrolyte for electrophoretic deposition in an electrophoretic deposition cell, using copper, aluminum, nickel, stainless steel and other metal conductive substrates or conductive substrates coated with copper, aluminum, nickel, stainless steel and other metal or conductive materials as the positive electrode plate of the electrophoretic deposition cell, conducting electrophoretic deposition using a conductive substrate that does not limit its constituent materials and three-dimensional structure as a negative pole piece, depositing the graphene in the positively charged graphene dispersion liquid on the negative pole piece, where the conductive substrate that does not limit its constituent materials and three-dimensional structure is a metal conductive substrate such as copper, aluminum and stainless steel, a conductive substrate coated with copper, aluminum, stainless steel or other metals or conductive materials, or carbon fiber textiles such as carbon fiber paper, glassy carbon electrode and conductive polymers such as non-metallic conductive matrix such as polyaniline, and then drying the negative electrode after electrophoretic deposition in an oven at 80 degrees C for 12 hours.