▎ 摘　　要

NOVELTY - The synthesis of sulfur-doped graphene aerogel involves dispersing oxidized graphene in deionized water, adding dithiothreitol, stirring, heating, reacting, immersing product in distilled water, drying to obtain sulfur-doped graphene aerogel material, mixing aerogel with polyvinyl alcohol solution to obtain paste-like dispersion, coating dispersion on the hard paper, drying to obtain sulfur-doped graphene aerogel paper electrode, adding heavy metal ion solution into electric adsorption vessel, and using sulfur-doped graphene aerogel paper electrode in adsorption of zinc ions. USE - Synthesis of sulfur-doped graphene aerogel used in electro-adsorption removal of zinc ions (claimed). ADVANTAGE - The method enables synthesis of sulfur-doped graphene aerogel using simple and environmentally-friendly process, and the aerogel performs heavy metal ion adsorption with high efficiency, high speed and simple operation. DETAILED DESCRIPTION - The synthesis of sulfur-doped graphene aerogel involves ultrasonically dispersing oxidized graphene in deionized water for 10-30 minutes, adding dithiothreitol, stirring to disperse evenly, heating at 95 degrees C for 2 hours, reacting, immersing product in distilled water for 2-3 days, freeze-drying to obtain sulfur-doped graphene aerogel material, mixing sulfur-doped graphene aerogel with pre-formulated polyvinyl alcohol solution to obtain paste-like dispersion, evenly coating 0.1-0.4 ml of the dispersion on the hard paper, freeze-drying to obtain sulfur-doped graphene aerogel paper electrode, adding heavy metal ion solution into electric adsorption vessel, using sulfur-doped graphene aerogel paper electrode in adsorption of zinc ions, using three-electrode system for electro-adsorption of heavy metal ions, using paper electrode as working electrode, platinum sheet electrode as counter electrode, calomel electrode as reference electrode, using conductivity meter to monitor the change of solution conductivity, the adsorption of sulfur-doped graphene aerogel paper electrode reaches equilibrium, when conductivity remains constant, removing the voltage on the electrode, and restoring conductivity of the solution near the initial value to achieve electrode desorption regeneration.