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Method for preparing dendritic cadmium sulfide

A cadmium sulfide and dendritic technology, applied in the field of preparation of inorganic material cadmium sulfide, can solve the problems of high cost, unfavorable large-scale production, low purity of target product, etc., and achieve the effects of low cost, realization of mass production and easy operation.

Inactive Publication Date: 2009-10-21
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Application Information

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Problems solved by technology

[0006] After a comprehensive comparison and analysis, it was found that the above methods all have disadvantages such as high cost, low purity of the target product, and unfavorable for large-scale production.
A technical attempt to prepare dendritic cadmium sulfide using amino acids as crystal growth regulators, the relevant literature has not yet been reported

Method used

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  • Method for preparing dendritic cadmium sulfide
  • Method for preparing dendritic cadmium sulfide
  • Method for preparing dendritic cadmium sulfide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 As shown, take 0.45g of CdCl 2 2.5H 2 O was dissolved in 80mL deionized water, and 0.46g of CS(NH 2 ) 2 Stir until a clear solution forms. Take 0.089g of L-alpha-alanine and add to the above solution, and stir at room temperature for 15min. Then add it to a 100mL hydrothermal kettle and seal it. Heating at 200°C for 12h, after the reaction, the product was isolated, washed to remove impurities, and dried at 80°C for 6h.

[0031] observed directly under a field emission scanning electron microscope. Figure 2a and Figure 2b , it can be seen from the figure that the overall shape of the product is dendritic, the purity is very high, and there is no other shape. The average length of the dendritic backbone is 4-6 μm, from Figure 2b You can see the neatly arranged branches, and the two rows of branches are almost perpendicular to each other. Each branch grows sequentially at a small angle to the main axis. The surface of the branches is relative...

Embodiment 2

[0034] Take 0.45g of CdCl 2 2.5H 2 O was dissolved in 80mL deionized water, and 0.46g of CS(NH 2 ) 2Stir until a clear solution forms. Take 0.089g of L-alpha-alanine and add to the above solution, and stir at room temperature for 15min. Then add it to a 100mL hydrothermal kettle and seal it. Heating at 180°C for 12h, after the reaction, the product was isolated, washed to remove impurities, and dried at 80°C for 6h. The morphology and structure of the product after drying are the same as in Example 1.

Embodiment 3

[0036] Take 0.45g of CdCl 2 2.5H 2 O was dissolved in 80mL deionized water, and 0.46g of CS(NH 2 ) 2 Stir until a clear solution forms. Take 0.089g of L-alpha-alanine and add to the above solution, and stir at room temperature for 15min. Then add it to a 100mL hydrothermal kettle and seal it. Heating at 200°C for 2h, after the reaction, the product was isolated, washed to remove impurities, and dried at 80°C for 6h. The product looks like Figure 4a , it can be seen from the figure that the reaction time has an important influence on the morphology of cadmium sulfide.

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Abstract

The invention belongs to the research field of preparation of inorganic material cadmium sulfide, and more particularly relates to a method for preparing dendritic cadmium sulfide. The method comprises the steps: (1) CdCl2. 2.5H2O is dissolved in de-ionized water, added with sulphide and stirred to be transparent solution; (2) organic addition agent is added into the solution in the step (1), and the mixed solution is heated; (3) after the reaction, the target dendritic cadmium sulfide can be obtained after being separated and dried; the mass ratio between the CdCl2. 2.5H2O and the sulphide is 1-3; the mass ratio between the organic addition agent and the CdCl2. 2.5H2O is 0.1-2; the sulphide is thiourea CS(NH2)2; and the organic addition agent is L-alpha- lactamine. The invention adopts a hydrothermal synthesis method and takes amino acid as crystal growth regulator to prepare the dendritic cadmium sulfide, and has the advantages of simple process flow, easy operation, low cost, high purity of the obtained product and being hope of batch production.

Description

technical field [0001] The invention belongs to the field of preparation and research of inorganic material cadmium sulfide (CdS), and in particular relates to a preparation method of 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 [see MaXC, Xu F, Liu Y K, et al. Mater . Res. Bull., 2005, 40: 2180-2188]. At present, its preparation methods mainly include template method, thermal evaporation method, chemical solution method and so on. The chemical synthesis method is simple and effective, and it is the most widely used method for synthesizing cadmium sulfide nanomaterials. [0003] Recently, hierarchically structured nanomaterials are becoming a research hotspot. For example, Cu with branched 2 O [See a) Siegfried M J, Choi K S.Angew.Chem.2005, 117(21):3282~3287; Angew.Ch...

Claims

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Application Information

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Patent Type & Authority Applications(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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