A kind of g-c3n4/mf composite structure fluorescent microsphere and its preparation method

Abstract

The invention relates to a g-C3N4 / MF composite structure fluorescent microsphere and a preparation method thereof. The g-C3N4 / MF composite structure fluorescent microsphere is prepared from the following parts of preparation of raw materials: preparation of MF microspheres; compositing of the raw materials: construction of a g-C3N4 / MF quantum dot MF microsphere composite structure: dissolving a precursor containing nitrogen in solvent, dispersing the MF microspheres preserved at low temperature in an aqueous solution, and sufficiently mixing; putting a mixed solution into a microwave reactor, and adjusting microwave power; after the reaction is finished within a period of time, taking out, putting into a centrifugal machine for centrifugally separating, filtering to remove clear liquid on an upper layer, and washing and separating for 2 to 3 times, thus obtaining a finished product. According to the g-C3N4 / MF composite structure fluorescent microsphere and the preparation method thereof disclosed by the invention, g-C3N4 / MF quantum dots are subjected to in-situ growth on the surfaces of the MF microspheres to construct a composite structure; compared with free g-C3N4 / MF quantum dots, quantum dot composite microspheres can partly make up the damage of surface defects to g-C3N4 / MF fluorescence, and the fluorescence stability is improved; besides, the flame retardant property of a substrate can be improved by the MF microspheres.

Description

technical field [0001] The invention relates to a fluorescent microsphere, in particular to a g-C 3 N 4 / MF composite structure fluorescent microsphere and its preparation method. Background technique [0002] Fluorescent microspheres refer to solid particles with diameters ranging from nanometers to micrometers, loaded with fluorescent substances, and excited by external energy to fluoresce. Due to the large specific surface area, strong adsorption, strong surface reaction ability and stable and efficient luminous efficiency of fluorescent microspheres, the application in the field of fluorescent materials has attracted more and more attention. [0003] However, the fluorescent microspheres prepared by various methods have some shortcomings. The fluorescent microspheres prepared by the adsorption method, the fluorescent substances are directly adsorbed on the surface of the microspheres by physical methods, occupying too many active positions on the surface of the micros...

AI Technical Summary

Problems solved by technology

However, in recent years, in the research on quantum dot-encoded microspheres, semiconductor fluorescent quantum dots such as CdS are still the main ones, and their preparation methods are complicated, and simple and quick preparation methods have not yet appeared.

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