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Nanosheet-shaped copper sulfide material, preparation method and application

A nano-flaky, copper sulfide technology, applied in the field of nanomaterials, can solve the problems of preparation reaction conditions, product structure and morphology, large size differences, and difficulty in large-scale mass production, and achieve smooth surface, high production efficiency, and complete reaction. Effect

Active Publication Date: 2020-12-04
GUIZHOU INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing copper sulfide nanomaterial preparation method is limited by the harsh preparation reaction conditions, there are large differences in the shape and size of the product structure, and it is difficult to mass-produce the problem

Method used

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  • Nanosheet-shaped copper sulfide material, preparation method and application
  • Nanosheet-shaped copper sulfide material, preparation method and application
  • Nanosheet-shaped copper sulfide material, preparation method and application

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Embodiment 1

[0029] Embodiment 1: a kind of nano flake copper sulfide material, such as figure 1 As shown, the nano-flaky copper sulfide is a prismatic flaky copper sulfide, and the thickness of the central part is greater than that of the edge. The center thickness of the prismatic sheet copper sulfide is 10-12nm, the edge thickness is 6-8nm, and the side length and width are 200-300nm. Its structure with smooth surface, back middle and thin edge has strong stability, small inter-individual variation, and can be mass-produced.

Embodiment 2

[0030] Embodiment 2: a kind of preparation method of nano-flaky copper sulfide material, comprises the following steps:

[0031] S101: Continuously inject moist sulfur dioxide and carbon monoxide into a water-bath reactor containing aqueous sodium hydroxide solution, perform electrolysis in a high-temperature vacuum environment, and perform a reduction reaction to obtain a mixed solution of sodium sulfide, hydrogen sulfide, and sulfur element. The reaction temperature is 180°C, the reaction time is 2h; the volume concentration of sulfur dioxide is 60mg / L, the volume concentration of carbon monoxide is 40mg / L, and the injection speed is 40L / min; the volume of sodium hydroxide aqueous solution is 8m 3 , the concentration of sodium hydroxide is 40mg / L.

[0032] S102: After cooling the water-bath reactor to normal temperature, stir the aqueous solution in the water-bath reactor, and discharge the gas in the water-bath reactor to obtain a mixed solution of sodium sulfide and sulfur...

Embodiment 3

[0035] Embodiment 3: a kind of preparation method of nano flake copper sulfide material, comprises the following steps:

[0036] S101: Continuously inject moist sulfur dioxide and carbon monoxide into a water-bath reactor containing aqueous sodium hydroxide solution, perform electrolysis in a high-temperature vacuum environment, and perform a reduction reaction to obtain a mixed solution of sodium sulfide, hydrogen sulfide, and sulfur element. The reaction temperature is 190°C, the reaction time is 205h; the volume concentration of sulfur dioxide is 70mg / L, the volume concentration of carbon monoxide is 45mg / L, and the injection speed is 45L / min; the volume of sodium hydroxide aqueous solution is 9m 3 , the concentration of sodium hydroxide is 45mg / L.

[0037] S102: After cooling the water-bath reactor to normal temperature, stir the aqueous solution in the water-bath reactor, and discharge the gas in the water-bath reactor to obtain a mixed solution of sodium sulfide and sulf...

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Abstract

The invention discloses a nanosheet-shaped copper sulfide material, a preparation method and application. According to key points of the technical scheme, the preparation method comprises the following steps: continuously injecting wet sulfur dioxide and carbon monoxide into a water bath reaction kettle containing a sodium hydroxide aqueous solution, and carrying out reduction reaction after electrolysis in a high-temperature vacuum environment to obtain a mixed solution of sodium sulfide, hydrogen sulfide and elemental sulfur; cooling the water bath reaction kettle to a normal temperature state, stirring the aqueous solution in the water bath reaction kettle, washing the gas in the water bath reaction kettle, and conducting discharging to obtain a mixed solution of sodium sulfide and elemental sulfur; adding copper powder and copper salt into the water bath reaction kettle, conducting reacting in a high-temperature environment, and conducting centrifuging, washing and drying to obtaina nano copper sulfide coarse material; disorderly grinding the nano copper sulfide coarse material in a grinding device through a plurality of groups of side-by-side steel balls to obtain a prismaticflaky nano copper sulfide material. The nana copper sulfide material is in a prismatic flaky shape, the thickness of the middle part is greater than the thickness of the edge, the surface is smooth,the structure is stable, the individual difference is small, and large-scale production can be achieved.

Description

technical field [0001] The invention relates to the technical field of nanometer materials, more specifically, it relates to a nanosheet-shaped copper sulfide material, a preparation method and an application. Background technique [0002] Nanomaterials, also known as ultrafine particle materials, generally refer to particles with a size between 1-100nm. It has surface effect, small size effect and macroscopic quantum tunneling effect. Nano-copper sulfide, as a kind of nano-functional material, is an important transition metal-chalcogen compound semiconductor material, showing a unique layered structure, which is widely used in photocatalysis, electrocatalysis, water treatment, energy storage devices, biomedicine, etc. and other fields have shown superior performance. At present, there are many methods for preparing copper sulfide nanomaterials, such as grinding method, chemical precipitation method, hydrothermal method, solvothermal method, sonochemical method, pyrolysis ...

Claims

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Application Information

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IPC IPC(8): C01G3/12B82Y40/00C25B1/00C25B1/14C25B1/22A61K33/34A61P31/04
CPCC01G3/12B82Y40/00C25B1/00C25B1/14C25B1/22A61K33/34A61P31/04C01P2004/24C01P2004/22C01P2004/64C01P2004/62Y02E60/36
Inventor 舒群威
Owner GUIZHOU INST OF TECH