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Solvent thermal induction control synthesis method for nano molybdate with scheelite structure

A synthesis method and molybdate technology, which are applied in the fields of nanostructure manufacturing, molybdenum compounds, nanotechnology, etc., can solve the problems of inconvenient post-processing and reduced product purity, and achieve easy control of size and structure, high product purity, and enhanced fluorescence. Effect

Inactive Publication Date: 2010-06-02
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to ensure the purity of the product, it should be washed repeatedly with organic solvents such as acetone, which brings great inconvenience to the post-processing of the product
If the product is not washed sufficiently, it will also lead to a reduction in product purity

Method used

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  • Solvent thermal induction control synthesis method for nano molybdate with scheelite structure
  • Solvent thermal induction control synthesis method for nano molybdate with scheelite structure
  • Solvent thermal induction control synthesis method for nano molybdate with scheelite structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) In the container, add oily solvent absolute ethanol and sodium molybdate solution with a concentration of 0.2mol / L in sequence according to the volume ratio of 0-3:1, and perform ultrasonic treatment. Add lead chloride solution, wherein the molar amount of lead is equal to the molar amount of molybdenum in sodium molybdate, after ultrasonication for 30 minutes, transfer it to a stainless steel autoclave, and ensure that the volume of the reaction solution is two-thirds of the volume of the autoclave , after the autoclave is sealed, put it into an electric heating constant temperature oven at 160°C, heat it for 4 hours, close the oven, and take it out after it cools to room temperature;

[0026] (2) The supernatant in the autoclave is sucked out, and the lower white precipitate collected is washed three times with acetone, distilled water and absolute ethanol successively to obtain the product of the present invention.

[0027] The morphology and structure of the pro...

Embodiment 2

[0032] Choose the oil-water ratio of 0: 1, change the sodium molybdate that concentration is 0.2mol / L into the potassium molybdate that concentration is 0.4mol / L, other conditions and steps are identical with embodiment 1, the product that obtains is by long 3 μ m , a nano-slab with a width of 220nm and a thickness of 110nm. The crystal system of the product is the same as in Example 1. The product has high purity, good crystallinity and optical properties.

Embodiment 3

[0034] Select the oil-water ratio of 3:1, change dehydrated alcohol into oleic acid, other conditions and steps are exactly the same as in Example 1, the product obtained is a flower cluster structure formed by 80nm nanoplates, the crystal system of the product and the implementation Example 1 is the same, and has good luminous properties.

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Abstract

The invention discloses a solvent thermal induction control synthesis method for nano molybdate with a scheelite structure, which comprises the following steps: shifting molybdenum source solution and an oily solvent in an oil-water ratio of 0-3 to 1 respectively, slowly adding solution of bivalent metal ion salt into the solution while ultrasonic treatment, transferring the solution into a stainless steel autoclave, ensuring the volume of the reaction solution to be two thirds that of the autoclave, sealing the autoclave and then putting the autoclave into an oven at the temperature of between 120 and 200 DEG C, and heating the solution for 0.5 to 10 hours and then closing the oven; and cooling the solution to the room temperature and taking the solution out, and washing the settlement product with distilled water, acetone and anhydrous ethanol in turn after the supernatant liquid is absorbed, wherein the obtained product is a nano molybdate material in a fishbone, flower cluster, batten or granule shape with superior optical and electric performance. The method has the advantages of available raw materials, simple and feasible method, simple used instrument and equipment, high purity of the product, easily controlled appearance and structure of the product, convenient post treatment of the product, and contribution for industrialized operation.

Description

technical field [0001] The invention relates to a preparation method of a scheelite molybdate nanometer material, in particular to a solvothermal induction control synthesis method of a nanometer molybdate scintillating light emitting material. Background technique [0002] Due to the unique scintillation properties of scheelite molybdate, it is widely used as the material of choice in high-energy physical detectors, solid-state lasers, optoelectronic devices and other fields. The corresponding nano-scale materials have richer physical, chemical and scintillation properties due to the existence of nano-effects. So far, the existing reports mainly focus on the preparation and performance research of molybdate powder or crystal materials, and there are few research reports on its nanomaterials. The methods used are mainly microemulsion method and precipitation method. Although the microemulsion method can obtain nano-scale and good morphology, it is difficult to realize indu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/00B82B3/00
Inventor 贾润萍张英强李丽华廖圣云窦仁美
Owner SHANGHAI INST OF TECH
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