▎ 摘　　要

NOVELTY - Preparing environmental catalytic material involves impregnating a textile fiber with a saturated dispersion of graphene oxide, drying, washing, and then placing in a reducing atmosphere, which is added with bismuth(III) nitrate and the nitric acid solution to obtain the textile fiber/graphene, where the ratio of bismuth(III) nitrate and the nitric acid is 1:1. The obtained product is added with sodium hydroxide, sodium bromide and and potassium iodide, followed by hydrothermal reaction at 120-180 degrees C for 3-8 hours, cooled, washed and dried. USE - Method for preparing environmental catalytic material (claimed). ADVANTAGE - The method enables to prepare environmental catalytic material in simple manner, that has better environmental purification effect and is suitable for industrial production. DETAILED DESCRIPTION - Preparing environmental catalytic material involves impregnating a textile fiber with a saturated dispersion of graphene oxide, drying, washing, and then placing in a reducing atmosphere, which is added with bismuth(III) nitrate and the nitric acid solution to obtain the textile fiber/graphene, where the ratio of bismuth(III) nitrate and the nitric acid is 1:1. The obtained product is added with sodium hydroxide, sodium bromide and and potassium iodide, followed by hydrothermal reaction at 120-180 degrees C for 3-8 hours, cooled, washed and dried to obtain textile fiber/graphene/ bismutoxidbromid/bismuth oxyiodide composite based environment catalytic material.