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Hydrophilic vermiform CuS (copper sulphide) agglomerate and preparation method and usage thereof

A worm-like, hydrophilic technology, applied in chemical instruments and methods, copper sulfide, physical/chemical process catalysts, etc., can solve environmental protection and health problems, harsh synthesis conditions, copper sulfide is not easy to obtain, etc. Achieve the effect of rich content in nature, improve utilization rate, and improve photocatalytic efficiency

Inactive Publication Date: 2013-02-06
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The above preparation methods of copper sulfide with different morphological structures have the following disadvantages: (1) The organic solvents used are highly toxic, which is not good for environmental protection and human health; (2) The synthesis conditions are harsh; (3) The operation is complicated ; (4) Novel forms of copper sulfide are not easy to obtain, etc.
In short, the above methods are difficult to simultaneously realize the difficult problem of preparing copper sulfide with controllable shape and size and environmental friendliness. Therefore, it is very important to invent a method for preparing copper sulfide nanostructures with a relatively simple process, environmental friendliness and novel morphology.

Method used

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  • Hydrophilic vermiform CuS (copper sulphide) agglomerate and preparation method and usage thereof
  • Hydrophilic vermiform CuS (copper sulphide) agglomerate and preparation method and usage thereof
  • Hydrophilic vermiform CuS (copper sulphide) agglomerate and preparation method and usage thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A hydrophilic worm-like CuS aggregate is prepared by the following steps:

[0043] (1) Preparation of polymer solution: Dissolve cornstarch in dimethyl sulfoxide to prepare a solution with a mass concentration of 0.01%, heat at 95°C for 10 minutes to dissolve the cornstarch; wait for the solution to cool to room temperature and place it at 6°C Freeze for 48 hours, then centrifuge at 4000rpm for 15 minutes, take the supernatant, and repeat this process 3 times to remove large gel particles to obtain a polymer solution for later use;

[0044] (2) Take 20mL of polymer solution, heat it to 20°C, add 0.8mL of 0.5M copper chloride solution, stir for 0.5h to produce a light blue transparent solution; then add 0.8mL of 0.5M sodium thiosulfate solution, Stir at room temperature for 24 hours, then stir and react at 80°C for 24 hours to obtain a black precipitate; wash the black precipitate with distilled water and absolute ethanol three times, and then dry at 60°C for 10 hours to...

Embodiment 2

[0051] A hydrophilic worm-like CuS aggregate is prepared by the following steps:

[0052] (1) Preparation of polymer solution: Dissolve potato starch in water to prepare a solution with a mass concentration of 0.5%, and heat at 80°C for 1.5h to dissolve the potato starch; after the solution is cooled to room temperature, freeze it at 8°C for 24h. Then centrifuge at 4000rpm for 15min, take the supernatant, and repeat this 3 times to remove the large gel particles to obtain the polymer solution, which is set aside;

[0053] (2) Take 18.4mL polymer solution, heat it to 70°C, add 0.8mL 0.5M copper chloride solution, stir for 0.5h to produce a light blue transparent solution; then add 0.8mL 0.5M sodium thiosulfate solution , stirred at room temperature for 24h, then stirred and reacted at 80°C for 24h to obtain a black precipitate; washed the black precipitate with distilled water and absolute ethanol for 5 times, and then dried at 60°C for 10h to obtain a hydrophilic worm-like CuS...

Embodiment 3

[0057] A hydrophilic worm-like CuS aggregate is prepared by the following steps:

[0058] (1) Preparation of polymer solution: Dissolve chitosan in dimethyl sulfoxide to prepare a solution with a mass concentration of 0.25%, heat at 95°C for 0.5h to dissolve chitosan; wait for the solution to cool to room temperature and place Freeze at 4°C for 12 hours, then centrifuge at 4000rpm for 10 minutes, take the supernatant, and repeat this process 3 times to remove large gel particles to obtain a polymer solution for later use;

[0059] (2) Take 20mL of polymer solution, heat it to 80°C, add 0.4mL of 0.5M copper nitrate solution, stir for 0.5h to produce a light blue transparent solution; then add 0.4mL of 0.5M sodium sulfide solution, and stir at room temperature 10h, then stirred and reacted at 80°C for 24h to obtain a black precipitate; the black precipitate was washed 6 times with distilled water and absolute ethanol, and then dried at 80°C for 6h to obtain hydrophilic worm-like...

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Abstract

The invention discloses a hydrophilic vermiform CuS (copper sulphide) agglomerate and a preparation method and usage thereof. The hydrophilic vermiform CuS agglomerate is prepared by dissolving natural polymers in water or dimethyl sulfoxide, heating to enable the atural polymers to be dissolved; standing for 12-48h at the temperature of 0-8 DEG C after the solution is cooled to the room temperature, then centrifugally removing gel, and repeating for 2-5 times so that polymer solution is obtained; heating the polymer solution to 20-90 DEG C and adding copper source solution for reaction; adding sulfur source solution and segmentally heating for reaction so that black precipitate is obtained; and washing and drying. The prepared hydrophilic vermiform CuS agglomerate is adjustable in size and structure and simple to operate, and the diameter can be controlled by adjusting reaction temperature and time and the like. In dye wastewater treatment, the hydrophilic vermiform CuS agglomerate more easily contacts with water and further is more easily combined with dye to enable the dye to be degraded, thereby photocatalytic efficiency of copper sulphide is improved.

Description

technical field [0001] The invention belongs to the field of inorganic functional nanometer materials, and in particular relates to a hydrophilic worm-like CuS aggregate modified with natural polymers, a preparation method and application thereof. Background technique [0002] Copper sulfide (CuS) nanoparticles are a P-type semiconductor, which has the following advantages: (1) It has optical properties such as good visible light absorption, infrared transmission, photoluminescence, and large nonlinear polarizability. It has potential application value in the fields of photocontrol devices, photocatalysts and photoelectrodes; (2) It has the characteristics of high conductivity and high energy capacitance, so it is an excellent cathode material in lithium-ion batteries; (3) When the temperature is equal to 1.6K, It exhibits excellent superconducting properties, so it is also a good low-temperature superconducting material. In addition, it can also be used as a high-temperatu...

Claims

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Application Information

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IPC IPC(8): C01G3/12B01J27/04B01J35/02
Inventor 胡继文李银辉张干伟刘国军
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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