A method for preparing cubic pyrochlore structured nanoparticles based on a sol-gel process and applications of the nanoparticles

A cubic pyrochlore, nanoparticle technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of low mechanical strength of fluoride, limited application of anti-laser damage, poor chemical stability, etc., and achieves a simple, feasible and simplified preparation method. Double-doping or multi-doping process, good repeatability
CN109554177AInactive Publication Date: 2019-04-02SHAANXI UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHAANXI UNIV OF SCI & TECH
Publication Date
2019-04-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method for preparing cubic pyrochlore structured nanoparticles based on a sol-gel process and applications of the nanoparticles are disclosed. Acetic acid is adopted as a solvent. Through rigidly controlling the mass ratio of bismuth, erbium and titanium and by utilizing atomic-scale mixing thereof, an objective of precisely controlling the stoichiometric ratio of the bismuth, erbium and titanium is achieved. The pure cubic pyrochlore-phase Bi2Ti2O7:Er nanopowder having good crystallization performance can be obtained by drying, heating, temperature maintaining and cooling. Through excitation (980 nanometer) of a near-infrared light source, up-conversion red-green luminescence which can be observed with naked eyes is obtained for the first time without doping with other rare earth elements, and the up-conversion luminescence obtained is expected to exert important roles in the fields of biological detection, photo-thermal treatment, display, counterfeiting preventing, medical diagnosis, and the like.
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Description

technical field

[0001] The present invention belongs to ternary Bi 2 Ti 2 o 7 The field of compound nanoparticle preparation and luminescence technology, specifically relates to a preparation method and application of cubic pyrochlore structure nanoparticle based on sol-gel method. Background technique

[0002] Near-infrared conversion visible light up-conversion material is a new type of functional material that can convert invisible infrared light into visible light with naked eyes. From the perspective of luminescence physics, it is a process of converting lower energy photons into higher energy photons, which is called the anti-Stoke effect. In recent years, rare earth up-conversion nano-luminescent materials are increasingly showing attractive application prospects in the fields of bioluminescent imaging, photothermal therapy, infrared detection, solar photovoltaic devices, optical anti-counterfeiting, etc., making it a hot spot in the current research of nano-lumine...

Claims

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