Method for rapidly preparing solid light-emitting material

Abstract

The invention discloses a method for rapidly preparing a solid light-emitting material. According to the method, citric acid, amine hydrochloride and rare earth metal salt are taken as raw materials and subjected to a microwave-assisted pyrolysis reaction after being directly ground and mixed uniformly, wherein amine hydrochloride is methylamine hydrochloride, ethylamine hydrochloride, ethylenediamine hydrochloride or propylamine hydrochloride; the rare earth metal salt is halide salt containing lanthanum or yttrium, sulfate containing lanthanum or yttrium, or nitrate containing lanthanum or yttrium. By means of the provided method, the defects of a conventional method for preparing the solid light-emitting material are overcome; preparation steps of the method are simple, preparation is fast and consumes short time (the pyrolysis process lasts for less than 5 minutes), the cost is low, energy consumption is low, and the reaction conditions are mild. According to the method, the material with the light emitting function can be obtained by directly pyrolyzing a solid mixture with microwaves, no solvent is needed, dependence on a reaction solvent is eliminated, and the method is suitable for large-scale production and industrial popularization.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional materials, and more specifically relates to a method for rapidly preparing solid luminescent materials. Background technique [0002] Solid luminescent materials have been widely used in optoelectronics, laser, lighting, display, radiation detection, medicine, agriculture and so on. With the development of society and the progress of technology, new requirements are put forward for the properties and preparation methods of solid luminescent materials. At present, the methods used to prepare solid luminescent materials mainly include: chemical precipitation method, sol-gel method, spray pyrolysis method, hydrothermal synthesis method, high-temperature solid-state sintering method, etc. [0003] The chemical precipitation method is to dissolve various raw materials in the same solution, and then add a precipitating agent or hydrolyze the solution at a certain temperature to form a...

AI Technical Summary

Problems solved by technology

However, this method usually needs to be prepared at a high temperature for several hours, the reaction process consumes a lot of energy, and the preparation cycle is long.

Images