▎ 摘　　要

NOVELTY - A colloidal graphene dispersion is prepared by adding graphite oxide in water, ultrasonically dispersing to obtain single sheet uniform dispersion of colloidal graphene oxide, adding surfactant, ultrasonically dispersing to uniformly mix, adding reducing agent to resulting solution, reacting until pH is 10.5-11.5, and placing reaction solution in 70-90 degrees C. USE - Preparation of colloidal graphene dispersion for storage and transport of graphene and graphene composite materials. ADVANTAGE - The colloidal graphene dispersion has high concentration and good dispersibility and can maintain long-term stability. Graphene sheet has uniform particle size distribution. Preparation process is low cost and environment-friendly. DESCRIPTION OF DRAWING(S) - The drawing shows a Raman spectrum of graphene. (Drawing includes non-English language text).