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Complexing-agent-assisted preparation method of cadmium sulfide multi-level-structured nano-grade material

A technology of nanomaterials and cadmium sulfide, which is applied in the field of preparation of nanomaterials to achieve the effect of satisfying production and application, strong operability, and simple preparation methods

Inactive Publication Date: 2013-05-01
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But so far, there are few reports on systematically studying the preparation of CdS hierarchical structure nanomaterials with different crystal forms and morphologies by adding complexes.

Method used

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  • Complexing-agent-assisted preparation method of cadmium sulfide multi-level-structured nano-grade material
  • Complexing-agent-assisted preparation method of cadmium sulfide multi-level-structured nano-grade material
  • Complexing-agent-assisted preparation method of cadmium sulfide multi-level-structured nano-grade material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] ①In a 50 ml flask, add 1 part of cadmium acetate and 10 parts of trisodium citrate to 100 parts of water, heat to 60°C and keep it for 30 minutes, stir well to prepare a reaction solution.

[0030] ②Transfer the reaction solution prepared according to step ① into a high-pressure reactor with a 25 ml polytetrafluoroethylene liner, add thiourea (the molar ratio to cadmium acetate is 1:1), and react at 160°C for 24 hours , the reaction kettle was naturally cooled to about 60°C, 5 ml of methanol was added, the product was filtered, washed several times with absolute ethanol, and the sample was vacuum-dried to obtain cadmium sulfide hierarchical structure nanomaterials with regular size and shape.

[0031] figure 1 and figure 2 Respectively, the X-ray diffraction pattern and the scanning electron micrograph of the prepared cadmium sulfide hierarchical structure nanomaterial. From the X-ray diffraction pattern ( figure 1 ) It can be seen that cadmium sulfide has a hexagon...

Embodiment 2

[0033] ①In a 50 ml flask, add 1 part of cadmium acetate to 100 parts of water, heat to 30 ℃ and keep it for 30 minutes, stir well to prepare the reaction solution.

[0034] ②Transfer the reaction solution prepared according to step ① into a high-pressure reactor with a 25 ml polytetrafluoroethylene liner, add thiourea (the molar ratio to cadmium acetate is 10:1), and react at 140 °C for 24 hours , the reaction kettle was naturally cooled to about 60°C, 5 ml of methanol was added, the product was filtered, washed several times with absolute ethanol, and the sample was vacuum-dried to obtain a cadmium sulfide hierarchical structure nanomaterial.

[0035] image 3 It is the scanning electron micrograph of the prepared cadmium sulfide hierarchical structure nanomaterial. It can be seen from the figure that cadmium sulfide has a dendritic structure.

Embodiment 3

[0037] ①In a 50 ml flask, add 1 part of cadmium nitrate and 20 parts of citric acid to 100 parts of water / ethanol mixture, heat to 30 ℃ and keep it for 30 minutes, stir well to prepare a reaction solution.

[0038] ② Transfer the reaction solution prepared according to step ① into a high-pressure reactor with a 25 ml polytetrafluoroethylene liner, add thioacetamide (the molar ratio to cadmium nitrate is 2:1), and react at 200 °C for 6 Hours later, the reactor was naturally cooled to about 60 °C, 5 ml of methanol was added, the product was filtered, washed several times with absolute ethanol, and the sample was vacuum-dried to obtain a cadmium sulfide hierarchical structure nanomaterial with regular size and shape .

[0039] Figure 4 and Figure 5 Respectively, the X-ray diffraction pattern and the scanning electron micrograph of the prepared cadmium sulfide hierarchical structure nanomaterial. From the X-ray diffraction pattern ( Figure 4 ) It can be seen that cadmium su...

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Abstract

The invention relates to a complexing-agent-assisted preparation method of a cadmium sulfide multi-level-structured nano-grade material. The method is characterized in comprising the steps that: a, a chemical reaction liquid is prepared, wherein 1 part of cadmium salt by weight and 0-50 parts of organic small-molecular compound by weight are dissolved in 100 parts of water or water / ethanol mixture by weight; under a temperature of 30-80 DEG C, stirring is sufficiently carried out, such that a reaction liquid is prepared; b, the cadmium sulfide multi-level-structured nano-grade material is synthesized, wherein the reaction liquid prepared in the step a is delivered into an autoclave with a polytetrafluoroethylene liner; a sulfur source is added, and a reaction is carried out; after the reaction, the autoclave is naturally cooled to 60 DEG C; methanol with a volume of 20-30% of that of the total volume of the reaction liquid is added; a product is filtered, and is washed multiple times by using anhydrous ethanol; and the product is dried by vacuum pumping, such that the cadmium sulfide nano-grade material with different crystal forms and morphologies is obtained. The method provided by the invention has the advantages of simple process, low cost, and high operability. With the method, requirements of production and application can be satisfied by one step.

Description

technical field [0001] The invention relates to a complexing agent-assisted preparation method of a cadmium sulfide multi-level structure nano material, in particular to a method for assisting the synthesis of a cadmium sulfide multi-level structure nano material with different crystal forms and shapes by a complexing agent. The method belongs to the field of preparation of nanometer materials. Background technique [0002] Micro / nanomaterials with special morphology, size and layer are of great significance in basic scientific research and practical application, and have received widespread attention. The multi-level structure assembled from low-dimensional nanomaterials as primary structural units is the focus of research. Therefore, designing and preparing hierarchically structured micro / nanomaterials with special morphology and size is one of the important topics in the research of hierarchically structured materials. Complexing agent-assisted synthesis is one of the m...

Claims

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Application Information

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IPC IPC(8): C01G11/02B82Y40/00
Inventor 朱君金彩虹何丹农
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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