Method for preparing neodymium/gadolinium/scandium/aluminum garnet doped nanometer powder

A technology of nano-powder and garnet, which is applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of low efficiency and long time consumption, and achieve the effects of reduced time, good dispersion and simple preparation equipment

Inactive Publication Date: 2013-02-27
NANJING UNIV OF INFORMATION SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcoming that the sol-gel method takes a long time and the efficiency is not high, and proposes an improved wet chemical method for preparing nano-powder

Method used

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  • Method for preparing neodymium/gadolinium/scandium/aluminum garnet doped nanometer powder
  • Method for preparing neodymium/gadolinium/scandium/aluminum garnet doped nanometer powder
  • Method for preparing neodymium/gadolinium/scandium/aluminum garnet doped nanometer powder

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Embodiment 1

[0028] Example 1: The concrete processing step of the embodiment of the present invention is as follows:

[0029] 1. Weigh a certain quality of gadolinium oxide, neodymium oxide and scandium oxide, dissolve them completely with dilute nitric acid and constant volume respectively; weigh a certain quality of aluminum nitrate nonahydrate, and dissolve them with double distilled water;

[0030] 2. According to (Gd 1-x Nd x ) 3 sc 2 Al 3 o 12 Middle Nd 3+ Doping concentration, use a pipette to measure a certain volume of gadolinium nitrate, neodymium nitrate, scandium nitrate and aluminum nitrate solutions, mix these nitrate solutions evenly into an appropriate volume of solution, Gd(NO 3 ) 3 , Nd(NO 3 ) 3 , Sc(NO 3 ) 3 , Al(NO 3 ) 3 The molar concentrations are: (0.12-0.12 x )mol / L, 0.12 x mol / L, 0.08mol / L, 0.12mol / L( x =0.01, 0.015, 0.02).

[0031] 3. Weigh a certain mass of citric acid and add it to the above mixed nitrate solution and stir until com...

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Abstract

The invention relates to a method for preparing neodymium / gadolinium / scandium / aluminum garnet (Nd:GSAG) doped nanometer powder. The method for preparing neodymium / gadolinium / scandium / aluminum garnet doped nanometer powder comprises the following steps of: preparing Gd(NO3)3 with the mol concentration of 0.12-0.12x mol / L, Nd(NO3)3 with the mol concentration of 0.12x mol / L, Sc(NO3)3 with the mol concentration of 0.08 mol / L and Al(NO3)3 with the mol concentration of 0.12 mol / L, wherein x is equal to 0.01, 0.015 and 0.02; weighing citric acid and adding the mixed nitrate solution until the molar concentration of citric acid is 0.48 mol / L in the mixed solution; controlling the temperature of the mixed solution to 70-80 DEG C; when adjusting the pH to 7-8, obtaining the pale yellow solution; heating and concentrating, and then forming a gel; continuously heating, and starting burning the gel; after the gel is burnt completely, obtaining precursor powder at the bottom of a container; collecting the precursor powder, grinding and then putting the powder into a muffle furnace for burning; keeping the constant temperature at 900 DEG C for 3 hours and then cooling along with the furnace, and obtaining the target powder. By combining a sol / gel method with a combustion method, the method provided by the invention is simple in preparation equipment, reduced in time of synthesis process, and capable of preparing the nanometer powder raw material with good dispersibility.

Description

technical field [0001] The invention relates to a preparation method of neodymium-doped gadolinium-scandium-aluminum garnet (Nd:GSAG) nanopowder, which is a wet chemical synthesis method combining sol-gel and combustion method, and belongs to the technical field of nanomaterial preparation. Background technique [0002] In the field of space detection, although water vapor plays a key role in important meteorological processes such as the greenhouse effect, atmospheric convection, clouds, fog, rain and snow, due to its small content in the atmosphere, it is possible to obtain high-precision, high-vertical High-resolution water vapor profiling is very difficult and has so far not been able to accurately model the water cycle, which is considered a major challenge in atmospheric science. With the development of laser technology and weak signal detection technology, lidar plays an increasingly important role in atmospheric detection. Among them, the differential absorption li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F17/00B82Y30/00B82Y40/00
Inventor 苏静缪菊红刘斌吴红艳季羽庆王楚钦
Owner NANJING UNIV OF INFORMATION SCI & TECH
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