Heteroatom-doped carbon dot-based lubricant as well as preparation method and application thereof

The invention relates to the technical field of lubricating additives, in particular to a heteroatom-doped carbon dot-based lubricant as well as a preparation method and application thereof.The preparation method comprises the following steps: adding a heterocyclic aromatic hydrocarbon compound precursor into base oil, and dispersing to obtain a mixed solution; the mixed solution is subjected to directional ultrasonic treatment with the assistance of external circulating cooling, and the heteroatom-doped carbon dot-based lubricant is obtained.The heteroatom-doped carbon dot-based lubricant prepared through the preparation method has excellent dispersity and storage stability, the traditional separation, purification and dispersion problems of a nano additive are solved, and the preparation method is suitable for industrial production. The antifriction and antiwear properties of the base oil can be remarkably improved, and the preparation method is simple and easy to implement. 本发明涉及润滑添加剂技术领域，具体涉及一种杂原子掺杂型碳点基润滑