Preparation method and applications of boron quantum dots

The invention relates to a preparation method and applications of boron quantum dots, and belong to the technical field of preparation of quantum dots. The preparation method comprises: dispersing boron powder in an organic solvent, and stirring uniformly to obtain a mixed solution containing boron particles; adding a hydrogen peroxide solution and boric acid powder, and carrying out high-energy ultrasonic breaking to obtain a primary product solution; and adding sodium borohydride, and carrying out centrifugation to obtain the boron quantum dots. According to the present invention, the boronquantum dots are prepared by using the boron powder as the boron source for preparing fluorescent boron quantum dots and using the organic solvents isopropanol and tetrahydrofuran as the double-drivechemical etching agent through the high-energy ultrasonic breaking assisted liquid phase stripping method, have characteristics of uniform size and slight green fluorescence, can be used as a boron-containing drug for boron ne