▎ 摘　　要

NOVELTY - Method of purification of three-dimensional graphene-coated single particle nanodiamond material, involves placing the mixture which contains three-dimensional graphene-coated single particle nanodiamond after the alkalization process in an acidic device filled with diluted hydrochloric acid, carrying out acidification at normal temperature and pressure, placing the acidified mixed solution in the filtration equipment after a certain time of acidification, filtrating and cleaning the mixed solution in the filtering equipment using pure water, and removing trace metal impurities. USE - Method of purification of three-dimensional graphene-coated single particle nano diamond material through acidification (claimed). ADVANTAGE - The equipment corrosion damage is reduced and service life of the equipment is extended by the acidification process while saving costs. The impurities of metal particles in the mixture are effectively removed, and the purification rate is improved. DETAILED DESCRIPTION - Method of purification of three-dimensional graphene-coated single particle nanodiamond material through acidification, involves purifying a mixture which contains three-dimensional graphene-coated single particle nanodiamond through magnetic separation, acidification, oxidation, alkalization and heavy liquid separation process using an acidification equipment and a filtration equipment. The purification process involves placing the mixture after the alkalization process in an acidic device filled with diluted hydrochloric acid having concentration of less than 15%, carrying out alkalization, carrying out acidification at normal temperature and pressure, placing the acidified mixed solution in the filtration equipment after a certain time of acidification, filtrating and cleaning the mixed solution in the filtering equipment using pure water, and removing trace metal impurities in the mixture.