▎ 摘　　要

NOVELTY - Preparing graphene copper iron oxide composite adsorbent comprises (i) introducing 0.462 g graphene oxide in 50 ml deionized water, ultrasonically treating for 1 hour, (ii) introducing 50 ml deionized water to a 150 ml conical flask and placing in a 60 degreesC ultrasonic water bath, feed nitrogen, and introducing 0.03 mol ferric chloride hexahydrate, (iii) introducing 0.03 mol heptahydrate to the solution, dissolving, (iv) introducing graphene oxide, stirring, (v) introducing 5 mol/l sodium hydroxide solution dropwise to the (iv) product, adjusting the pH of the solution to 9-10, (vi) introducing 0.02 mol copper sulfate pentahydrate to the (v) product, dropping 5 mol/l sodium hydroxide solution simultaneously, maintaining pH of solution to 9-10, and stirring for 60 minutes, (vii) leave standstill for precipitation, and pouring out the supernatant liquid, washing with deionized water until neutral, freeze-drying , grounding and bagging. USE - The method is useful for preparing graphene copper iron oxide composite adsorbent for removing arsenic in water (claimed). ADVANTAGE - The graphene copper iron oxide composite adsorbent is used for the toxic arsenic remove in the water, with better stability, high adsorption efficiency, low manufacturing cost, and recycles. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a graphene copper iron oxide composite adsorbent for arsenic removal in water prepared by above mentioned method.