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Method of preparing cadmium tungstate nanowire by microwave method

A cadmium tungstate and nanowire technology, which is applied in the field of preparation of cadmium tungstate nanowires, can solve the problem that the luminescence performance and damage resistance of the cadmium tungstate nanowire are reduced, the aspect ratio of the cadmium tungstate nanowire is small, and the User requirements and other issues, to achieve the effect of easy industrial production, low cost, environmental protection industrial production

Inactive Publication Date: 2014-01-22
LUOYANG INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the existing preparation method of cadmium tungstate nanowires is to use a hydrothermal method, by adding organic surfactants, to make cadmium tungstate crystals grow in orientation, so as to obtain cadmium tungstate nanowires. However, this method is not only complicated in process, but also The use of a large amount of organic surfactants will cause a lot of pollution to the environment, and the aspect ratio of the obtained cadmium tungstate nanowires is also small, which will reduce the luminescence performance and damage resistance of the cadmium tungstate nanowires, thereby achieving Less than the user's requirements

Method used

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  • Method of preparing cadmium tungstate nanowire by microwave method
  • Method of preparing cadmium tungstate nanowire by microwave method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1 Make sodium tungstate into a solution and adjust the WO in the solution 4 2- The ion concentration is 0.05mol / L;

[0023] Step 2: Make cadmium chloride into a solution and adjust the Cd in the solution 2+ The ion concentration is 0.05mol / L;

[0024] Step 3 mixes the sodium tungstate aqueous solution prepared in step 1 with the cadmium chloride aqueous solution prepared in step 2, wherein the molar ratio of sodium tungstate and cadmium chloride is 1:1, and after stirring the obtained solution for 10 minutes, carry out suction filtration;

[0025] Step 4 Place the precipitate obtained in Step 3 in a corundum crucible, and then place the corundum crucible in a container containing carbon powder, so that the carbon powder surrounds the corundum crucible, cover the lid, and move the container into a microwave oven;

[0026] Step 5 The power of the microwave oven is 160W, and react for 90 minutes under the action of microwave;

[0027] Step 6 After the reaction is...

Embodiment 2

[0030] Step 1 Make sodium tungstate into a solution and adjust the WO in the solution 4 2- The ion concentration is 1.2mol / L;

[0031] Step 2: Make cadmium chloride into a solution and adjust the Cd in the solution 2+ The ion concentration is 1.2mol / L;

[0032] Step 3 mixes the sodium tungstate aqueous solution prepared in step 1 with the cadmium chloride aqueous solution prepared in step 2, wherein the molar ratio of sodium tungstate and cadmium chloride is 1:1, and after stirring the obtained solution for 20 minutes, carry out suction filtration;

[0033] Step 4 Place the precipitate obtained in Step 3 in a corundum crucible, and then place the corundum crucible in a container containing carbon powder, so that the carbon powder surrounds the corundum crucible, cover the lid, and move the container into a microwave oven;

[0034] Step 5 The power of the microwave oven is 500W, and react for 50 minutes under the action of microwave;

[0035] Step 6 After the reaction is o...

Embodiment 3

[0037] Step 1 Make sodium tungstate into a solution and adjust the WO in the solution 4 2- The ion concentration is 2mol / L;

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Abstract

The invention discloses a method of preparing a cadmium tungstate nanowire by a microwave method. The method comprises the following steps: respectively preparing sodium tungstate and cadmium chloride into liquor, and carrying out suction filtration after stirring; and enabling precipitates to react under action of microwaves to obtain the cadmium tungstate nanowire. The cadmium tungstate nanowire obtained by the method disclosed by the invention has the advantages of being greater in nanocrystal slenderness ratio, high in purity, excellent in luminescence property, and simple in process, quick and efficient, low in cost, environment-friendly, easy for industrialization, and the like.

Description

technical field [0001] The invention relates to a method for preparing cadmium tungstate nanowires, in particular to a method for preparing cadmium tungstate nanowires by a microwave method. Background technique [0002] Cadmium tungstate (CdWO 4 ) nanocrystal has a scheelite structure, has a large absorption coefficient for x-rays, a short radiation length, and strong damage resistance. It is a very important scintillator material, which can emit light blue to yellow spectra under the action of ultraviolet light, so It plays an important role in optoelectronic materials such as fluorescence and laser, and has been widely used in light-emitting diodes and large-screen displays. It has a broad application space in sensor-sensitive components, color rendering materials, and color-changing materials. [0003] At present, the existing preparation method of cadmium tungstate nanowires is to use a hydrothermal method, by adding organic surfactants, to make cadmium tungstate cryst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/32C30B29/60C30B7/14
Inventor 王永刚杨琳琳王晓峰王玉江徐国辉林海燕罗伟
Owner LUOYANG INST OF SCI & TECH
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