Preparation method of mono-disperse gadolinium borate nanometer crystal

A technology of nanocrystals and gadolinium borate, which is applied in borates, chemical instruments and methods, boron oxides, etc., can solve the problems of weakened luminescence performance, achieve less agglomeration, mild reaction conditions, and good crystallization

Inactive Publication Date: 2012-08-15
ZHEJIANG NORMAL UNIVERSITY
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Problems solved by technology

Therefore, GdBO prepared by many methods 3 Crystals, when the size reaches the nanometer level, the luminescence performance tends to be greatly weakened

Method used

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  • Preparation method of mono-disperse gadolinium borate nanometer crystal
  • Preparation method of mono-disperse gadolinium borate nanometer crystal
  • Preparation method of mono-disperse gadolinium borate nanometer crystal

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Embodiment Construction

[0032] The invention uses gadolinium chloride and boric acid as raw materials, and is prepared by a hydrothermal method under the action of a chelating agent. Monodisperse GdBO 3 The simple synthesis process of nanocrystals, first sodium citrate (C 6 h 5 o 7 Na 3 2H 2 O) as a chelating agent in aqueous solution with gadolinium chloride (GdCl 3 ) chelation, and after stirring for 20 minutes, boric acid (H 3 BO 3 ) solution, after stirring for 30min, transfer the solution to a polytetrafluoroethylene-lined hydrothermal reactor with a volume of 50ml and heat it at a certain temperature for a period of time to obtain GdBO 3 nanoparticles. After natural cooling, the reacted solution was centrifuged, and the obtained solid product was washed with water and ethanol several times, and the obtained solid was separated and dried in a drying device to obtain GdBO 3 Nanocrystalline powder finished product.

[0033] In the synthetic technique of the present invention, the mol rat...

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Abstract

The invention provides a preparation method of mono-disperse gadolinium borate nanometer crystal. The preparation method comprises the following steps of: chelating a chelant and gadolinium chloride in a water solution; after stirring, adding a boric acid solution in the solution; after uniformly mixing, transferring the obtained solution to a polytetrafluoroethylene-lined hydrothermal reaction kettle and heating; centrifuging the reacted solution and washing with water and ethanol; and separating solids and drying the solids in a drying device, so as to obtain gadolinium borate nanometer crystal powder. The preparation method provided by the invention has the advantages of simple preparation process and temperate reaction conditions. Crystallized powder can be directly obtained without high-temperature treatment of the reaction product.

Description

[0001] technical field [0002] The invention belongs to the technical field of inorganic chemical preparation, and is based on gadolinium chloride (GdCl 3 ) solution and boric acid (H 3 BO 3 ) as raw material, with sodium citrate (C 6 h 5 o 7 Na 3 2H 2 O) as a chelating agent, gadolinium borate (GdBO 3 ) a facile method for nanocrystals. Background technique [0003] Gb 3 It is a very good luminescent matrix material and magnetic material with excellent physical and chemical properties. When in GdBO 3 When the rare earth luminescent ions are internally doped, as the matrix of the luminescent material, it can improve the luminescent performance of the luminescent center and the stability of the material is good. When doped with Eu 3+ , changing the particle size and doping concentration can make GdBO 3 :Eu 3+ Emit fluorescence of different colors from orange to red; when doped or co-doped with other rare earth ions (such as: Yb 3+ , Tb 3+ , Er 3+ etc.), the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B35/12C09K11/78
Inventor 李正全曾毓斌吴茜茜王娜芝
Owner ZHEJIANG NORMAL UNIVERSITY
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