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Method for synthesis of microemulsion of strontium molybdate nano light emitting material

A nano-luminescent material and synthesis method technology, which is applied in the field of strontium molybdate preparation, can solve the problems of affecting product purity, excessive product particle size, cumbersome post-processing process, etc., and achieve good optical properties, high product purity, and post-processing convenient effect

Inactive Publication Date: 2010-06-16
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydrothermal method has a high synthesis yield, and the resulting product has high purity and is easy to produce on a large scale, but there is a problem that the particle size of the product is too large (submicron)
Although the solvothermal method can obtain nano-scale products, the post-treatment process of the products is very cumbersome due to the introduction of organic solvents, which greatly affects the purity of the products

Method used

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  • Method for synthesis of microemulsion of strontium molybdate nano light emitting material
  • Method for synthesis of microemulsion of strontium molybdate nano light emitting material

Examples

Experimental program
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Embodiment 1

[0027] (1), take by weighing the strontium chloride of 0.010mol and the sodium molybdate of 0.010mol, then it is dissolved in 50mL distilled water respectively and make the strontium chloride and the sodium molybdate solution of concentration 0.2mol / L;

[0028] (2), according to the mass ratio of 3: 7: 1, add the mixed solution of ethane-didodecyl dimethyl ammonium bromide surfactant and n-butanol (mass ratio is 1: 1), n-octyl Alkanes and the strontium chloride solution prepared in the first step were ultrasonicated at a power of 100W for 15 minutes, and then placed in a water bath at 35°C for 30 minutes at a constant temperature until the solution was clear and transparent, and a microemulsion of strontium chloride was obtained. The sodium molybdate solution obtained in the first step was used to replace the strontium chloride solution, and a similar method was used to obtain the sodium molybdate microemulsion. Then the prepared two kinds of micellar solutions were mixed rapi...

Embodiment 2

[0035] The mass ratio of 2:8:1 was selected, other conditions and steps were exactly the same as in Example 1, and the obtained product was a nano-spindle with a length of 200 nm and a width of 75 nm. The product has the same crystal structure as in Example 1. It has high purity and good crystallinity. Compared with Example 1, the fluorescence emission peak of the product is blue-shifted.

Embodiment 3

[0037] The mass ratio of 5:5:1 was selected, and other conditions and steps were exactly the same as in Example 1, and the obtained product was a quasi-nanometer spindle with a length of 500 nm and a width of 200 nm. The product has the same crystal structure as in Example 1. It has high purity and good crystallinity. Compared with Example 1, the blue shift of the fluorescence peak of the product is less.

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Abstract

The invention discloses a method for synthesis of microemulsion of strontium molybdate nano light emitting material, comprising the steps of preparing 0.2 mol / L strontium chloride solution and 0.2 mol / L molybdenum source solution, adding mixed solution of the n-butyl alcohol and the surfactant of ethane-di-dodecyl dimethyl ammonium bromide, n-octane and the strontium chloride solution to a container in sequence, supersonically oscillating the container, placing the container in a constant-temperature water bath until the solution in the contain being clear and transparent to obtain strontium chloride microemulsion, preparing molybdenum source microemulsion by using the molybdenum source solution rather than the strontium chloride solution with the similar method, rapidly mixing the strontium chloride microemulsion and the molybdenum source microemulsion, supersonically oscillating the strontium chloride microemulsion and the molybdenum source microemulsion until the strontium chloride microemulsion and the molybdenum source microemulsion being evenly mixing, adding acetone for demulsifing after the reaction of the strontium chloride microemulsion and the molybdenum source microemulsion, absorbing supernatant liquor, and washing the deposited products of reaction with distilled water, acetone and absolute ethyl alcohol in sequence to obtain the strontium molybdate nano emitting material which has the length of 100-600nm and the maximum width of 30-200nm and is in the structure of spindle. The method for synthesizing strontium molybdate nano emitting material microemulsion is easy to obtain the raw materials, is simple, has low cost, ensures that the product of reaction has high purity and controllable morphology and size and is suitable for the scale production.

Description

technical field [0001] The invention relates to a preparation method of strontium molybdate, in particular to a microemulsion synthesis method of nanometer strontium molybdate. Background technique [0002] Strontium tungstate with scheelite structure has excellent scintillation properties, and can be widely used in high-energy physics, laser detection and other fields. Strontium molybdate, which has the same crystal structure as strontium tungstate, can also be used as a scintillation light emitter. [0003] The existing research reports on strontium molybdate mainly focus on the preparation of micron-scale strontium molybdate crystal material and research on its luminescent properties. In recent years, some scientific researchers have prepared nano-strontium molybdate by means of hydrothermal method and solvothermal method. The hydrothermal method has a relatively high synthesis yield, and the resulting product has high purity and is easy to produce on a large scale, but...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/00B82B3/00C09K11/67
Inventor 李丽华贾润萍张英强张文静廖圣云
Owner SHANGHAI INST OF TECH
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