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Method for preparing pine-like cadmium sulfide from ethylenediamine type ionic liquid

An ethylenediamine-type, ionic liquid technology, applied in the direction of cadmium sulfide, etc., can solve the problems of unfavorable industrialization of nanomaterials, complicated preparation procedures, and high cost, and achieve the effects of low cost, high purity, and simple procedures

Inactive Publication Date: 2012-11-14
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the preparation of these nanomaterials, ionic liquids in which the cation is imidazole are mostly used. The preparation procedure of this ionic liquid is complicated and the cost is high, which is not conducive to the industrialization of the preparation of nanomaterials with ionic liquids.

Method used

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  • Method for preparing pine-like cadmium sulfide from ethylenediamine type ionic liquid
  • Method for preparing pine-like cadmium sulfide from ethylenediamine type ionic liquid
  • Method for preparing pine-like cadmium sulfide from ethylenediamine type ionic liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take 30ml of ethylenediamine-type ionic liquid and mix with 10ml of deionized water, add 0.3g of thiourea and 0.3g of cadmium chloride dihydrate and stir until a transparent solution is formed. Then it was transferred to a 50ml autoclave and heated at 180°C to 200°C for 12h. After the reaction, the product was isolated, washed to remove impurities, and dried at 80°C for 6h.

[0021] observed directly under a field emission scanning electron microscope. figure 1 , it can be seen from the figure that the overall shape of the product is pine-like, the purity is very high, and there is no other shape. Each branch is a rod-shaped structure, and the top of the rod is sharper, but the length and thickness of the rods are quite different.

[0022] figure 2 is the XRD pattern of the sample. After calibration, all diffraction peaks are consistent with the standard spectrum (PDF.No 41-4019), and no other impurity peaks are found. After analysis, the obtained product belongs t...

Embodiment 2

[0024] Take 30ml of ethylenediamine-type ionic liquid and mix with 10ml of deionized water, add 0.3g of thiourea and 0.3g of cadmium chloride dihydrate and stir until a transparent solution is formed. Then transfer to a 50ml autoclave and heat at 180°C to 200°C for 14h. After the reaction, the product is isolated, washed to remove impurities, and dried at 80°C for 6h.

[0025] The morphology and figure 1 basically the same.

Embodiment 3

[0027] Take 30ml of ethylenediamine-type ionic liquid and mix with 10ml of deionized water, add 0.3g of thiourea and 0.3g of cadmium chloride dihydrate and stir until a transparent solution is formed. Then transfer to a 50ml autoclave and heat at 180°C to 200°C for 16h. After the reaction, the product is isolated, washed to remove impurities, and dried at 80°C for 6h.

[0028] The morphology and figure 1 basically the same.

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Abstract

The invention relates to the field of preparation methods of cadmium sulfide (CdS) as an inorganic material, in particular to a method for preparing pine-like cadmium sulfide, which comprises the following steps of: (1) dissolving ethylenediamine into deionized water, then adding fluoboric acid, steaming water in the mixed liquid to obtain an ethylenediamine type ionic liquid; (2) mixing the ethylenediamine type ionic liquid prepared in the step (1) with the deionized water, adding a sulfide and cadmium chloride dihydrate to form a transparent solution; and (3) heating in a high-pressure autoclave to react, and then separating to obtain the target product. The heating temperature in the step (3) is 180-200 DEG C; the volume ratio of the ethylenediamine type ionic liquid to the deionized water in the step (2) is 3:1; and the sulfide in the step (2) is sulfourea. In the invention, the pine-like cadmium sulfide is prepared with a hydrothermal synthesis method with simple and easy operation, low cost, high product purity and possibility for mass production.

Description

technical field [0001] The invention relates to the field of preparation methods of inorganic material cadmium sulfide (CdS), in particular to the preparation method of pine dendritic cadmium sulfide. Background technique [0002] As an important semiconductor material, cadmium sulfide is widely used in photocatalysts, gas sensors, laser and infrared detectors, solar cells, light-emitting diodes and other optical devices. At present, its preparation methods mainly include template method, thermal evaporation method, Chemical solution method, etc. The chemical synthesis method is simple and effective, and it is the most widely used method for the synthesis of cadmium sulfide nanomaterials. When synthesizing nanomaterials, some toxic reagents, such as ethylenediamine, are often used. Although many novel nanomaterials have been synthesized by using ethylenediamine, from the perspective of green chemistry, extreme conditions such as high temperature, anhydrous and oxygen-free,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G11/02
Inventor 赵荣祥李秀萍
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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