▎ 摘　　要

NOVELTY - Method for preparing silver/silver bromide graphene composite gel, involves (a) adding graphene oxide to deionized water, ultrasonically dispersing, adding phosphoric acid, drying, transferring to a muffle furnace for high-temperature calcination, (b) adding the product to deionized water, ultrasonically dispersing, adding sulfuric acid, freeze-drying, and calcining, (c) dispersing the product in 100 ml deionized water, ultrasonically processing for 1 hour, adding sodium bisulfite, placing at 70 degrees C for 12 hours, and dialyzing with deionized water for 24 hours, and (d) dissolving silver nitrate in 20 ml deionized water, immersing the product in the cetyltrimethylammonium bromide solution, and placing at 60 degrees C for 6 hours, after cooling to room temperature, using deionized water and washing with ethanol, immersing in silver nitrate solution for 12 hours, and finally washing with deionized water and ethanol, and freeze-drying. USE - The method is used for preparing silver/silver bromide graphene composite gel, which is used in photocatalytic degradation of rhodamine B in dye wastewater (claimed). ADVANTAGE - The method is simple and cost-effective, and ensures high efficiency and energy saving. DETAILED DESCRIPTION - Method for preparing silver/silver bromide graphene composite gel, involves (a) adding graphene oxide to 100 ml deionized water, ultrasonically dispersing for 1 hour, adding phosphoric acid and ultrasonic for 4 hours until the mixture is uniform, drying the sample at 85 degrees C for 4 hours, transferring to a muffle furnace for high-temperature calcination, (b) adding the product to 100 ml deionized water, ultrasonically dispersing for 1 hour, adding sulfuric acid, ultrasonically processing for 2 hours until the mixture is uniform, freeze-drying, and calcining at high temperature, (c) dispersing the product in 100 ml deionized water, ultrasonically processing for 1 hour, adding sodium bisulfite, placing at 70 degrees C for 12 hours, and dialyzing with deionized water for 24 hours, and (d) dissolving silver nitrate in 20 ml deionized water, immersing the product in the cetyltrimethylammonium bromide solution, and placing at 60 degrees C for 6 hours, after cooling to room temperature, using deionized water and washing with ethanol, immersing in silver nitrate solution for 12 hours, and finally washing with deionized water and ethanol, and freeze-drying.