▎ 摘　　要

NOVELTY - A graphene oxide-functionalized paper is applied by adding graphene oxide and deionized water, ultrasonically treating at room temperature for 1-5 hours having power of 100 W to obtain uniformly dispersed graphene oxide suspension, fully soaking paper towel into graphene oxide solution for 3-5 hours, gently removing paper towel with tweezer, spreading into aluminum foil, drying at less than or equal to 40 degrees C for 12 hours to obtain graphene oxide composite paper, putting into wastewater containing dye and/or heavy metal ion, adsorbing, reaching wastewater purification treatment index, and removing composite paper. USE - Application of graphene oxide-functionalized paper. ADVANTAGE - Process is simple, low cost, and environment-friendly and has improved water quality and saved water resource, and raw material has excellent stability and controllable shape, size, and thickness.