| 摘要 |
A purification method and system for three-dimensional graphene-covered single-particle nanodimonds. A prepared mixture of the three-dimensional graphene-covered single-particle nanodimonds is purified. By means of optimal design of the prior art, the mixture undergoes successive processes of separation by excitation, acidification, oxidation, alkalization, and dense media separation, thus allowing removal of impurities such as metal impurities or metal ions, silicon, and amorphous carbon from a mixed solution, and achieving the goal of purification. Furthermore, the entire purification process can be carried out at room temperature and room pressure by employing a solution having less acidity or alkalinity, thus avoiding a large number of repeated processes, simplifying process steps, reducing process time, solving the existing problem of reduced equipment service life caused by repeated oscillating reactions with strong acids and strong alkalis at high-temperature and high-pressure environments, extending the equipment service life, and saving costs. |
