▎ 摘　　要

NOVELTY - Preparation of graphene/polyvinyl alcohol nano fiber membrane adsorbent involves mixing graphene oxide and deionized water, performing ultrasonic treatment for 0.5-4 hours, dispersing, mixing polyvinyl alcohol and deionized water, heating at 40-100 degrees C, cooling to room temperature, mixing graphene oxide and polyvinyl alcohol solution, stirring, electrospinning at spinning voltage of 10-35 kV, flow rate of 0.01-25 mL/hour and temperature of 10-35 degrees C and freeze-drying. USE - Method for preparing graphene/polyvinyl alcohol nano fiber membrane adsorbent used for adsorbing heavy metal ion in wastewater (claimed). ADVANTAGE - The graphene/polyvinyl alcohol nano fiber membrane adsorbent has high adsorbing property, simple preparation and high working efficiency.