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A kind of preparation method of calcium tungstate linear nano material

A nanomaterial, calcium tungstate technology, applied in the field of nanomaterials, can solve the problems of high cost, complicated operation, inability to obtain single crystal nanowires, etc., and achieves the effects of good crystallinity, simple operation and easy industrial production.

Inactive Publication Date: 2017-07-21
LUOYANG INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The template method usually requires the aid of alumina templates, which has the disadvantages of high cost, complicated operation, and can only obtain polycrystalline nanowires, not single crystal nanowires.

Method used

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  • A kind of preparation method of calcium tungstate linear nano material
  • A kind of preparation method of calcium tungstate linear nano material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method of calcium tungstate linear nanomaterials, comprising the steps of:

[0024] 1) Propionic acid is dissolved in deionized water to form propionic acid aqueous solution, and the concentration of propionic acid in the propionic acid aqueous solution is adjusted to 0.9mol / L for subsequent use;

[0025] 2) Calcium nitrate is dissolved in deionized water to form a calcium nitrate aqueous solution, and the concentration of calcium nitrate in the calcium nitrate aqueous solution is adjusted to be 0.9mol / L for subsequent use;

[0026] 3) the aqueous solution of propionic acid obtained in step 1) and the aqueous solution of calcium nitrate obtained in step 2) are mixed according to the molar ratio of propionic acid and calcium nitrate in the calcium propionate precipitation slurry obtained after mixing is 2:1. After that, let stand for 40 minutes and set aside;

[0027] 4) Dissolve sodium tungstate in deionized water to form an aqueous solution of sodium tun...

Embodiment 2

[0034] A preparation method of calcium tungstate linear nanomaterials, comprising the steps of:

[0035] 1) Propionic acid is dissolved in deionized water to form propionic acid aqueous solution, and the concentration of propionic acid in the propionic acid aqueous solution is adjusted to 0.02mol / L for subsequent use;

[0036] 2) Calcium nitrate is dissolved in deionized water to form a calcium nitrate aqueous solution, and the concentration of calcium nitrate in the calcium nitrate aqueous solution is adjusted to be 0.3mol / L for subsequent use;

[0037] 3) the aqueous solution of propionic acid obtained in step 1) and the aqueous solution of calcium nitrate obtained in step 2) are mixed according to the molar ratio of propionic acid and calcium nitrate in the calcium propionate precipitation slurry obtained after mixing is 2:1. After that, let it stand for 30 minutes and set aside;

[0038] 4) Dissolve sodium tungstate in deionized water to form an aqueous solution of sodium...

Embodiment 3

[0045] A preparation method of calcium tungstate linear nanomaterials, comprising the steps of:

[0046] 1) Propionic acid is dissolved in deionized water to form propionic acid aqueous solution, and the concentration of propionic acid in the propionic acid aqueous solution is adjusted to 0.6mol / L for subsequent use;

[0047] 2) Calcium nitrate is dissolved in deionized water to form a calcium nitrate aqueous solution, and the concentration of calcium nitrate in the calcium nitrate aqueous solution is adjusted to be 0.1mol / L for subsequent use;

[0048] 3) the aqueous solution of propionic acid obtained in step 1) and the aqueous solution of calcium nitrate obtained in step 2) are mixed according to the molar ratio of propionic acid and calcium nitrate in the calcium propionate precipitation slurry obtained after mixing is 2:1. After that, let it stand for 30 minutes and set aside;

[0049] 4) Dissolve sodium tungstate in deionized water to form an aqueous solution of sodium ...

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Abstract

The invention relates to a preparation method of a calcium tungstate linear nanometer material. The preparation method includes steps: first preparing a propionic acid water solution and a calcium nitrate water solution; first mixing the propionic acid water solution and the calcium nitrate water solution so as to obtain a calcium propionate precipitation solution which is used as a reaction precursor; then preparing a sodium tungstate water solution and a polyvinyl alcohol water solution, and mixing the sodium tungstate water solution and the polyvinyl alcohol water solution so as to obtain a calcium propionate precipitation solution; mixing the obtained calcium propionate precipitation solution with the obtained sodium tungstate water solution and polyvinyl alcohol water solution according to a molar ratio of 1:1 of sodium tungstate and calcium propionate so as to obtain a mixed solution; performing ultrasonic treatment on the mixed solution so as to obtain a reaction product; using distilled water for washing the reaction product, and obtaining the calcium tungstate linear nanometer material after filtering and drying. The prepared calcium tungstate linear nanometer material is of one-dimensional linear structure, wherein the diameter is about 80-150nm, the length is about 1.0-1.5mum, and the calcium tungstate linear nanometer material has a wide application prospect.

Description

technical field [0001] The invention relates to a nano material, in particular to a method for preparing a calcium tungstate linear nano material. Background technique [0002] Calcium tungstate is a very important inorganic functional material with a scheelite structure. Due to its special crystal structure and energy band structure, calcium tungstate can be excited by x-rays and ultraviolet light to produce high-efficiency blue light, so it is blinking Phosphor, fluorescence, optoelectronic display devices, luminescent coatings, optical fiber devices, biological materials and other fields have a very wide range of uses. As we all know, the performance of nanomaterials depends on factors such as the shape and size of nanocrystals. Therefore, the preparation of calcium tungstate nanocrystals with special shapes is of great significance in both theoretical research and practical applications. [0003] Among them, one-dimensional nanomaterials often exhibit particularly excel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G41/00B82Y40/00
CPCC01G41/00C01P2002/01C01P2002/10C01P2002/72C01P2004/16C01P2004/62C01P2004/64C01P2006/12C01P2006/80
Inventor 杨琳琳王永刚王黎王晓峰王玉江徐国辉
Owner LUOYANG INST OF SCI & TECH