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Method for preparing hierarchical floriform hollow-structure CuS

A hollow structure, flower-like technology, applied in the field of preparation of nano CuS, can solve the problems of small specific surface area and low photocatalytic activity of CuS nanomaterials, and achieve obvious pore size distribution, increase specific surface area, and improve the effect of photocatalytic activity.

Inactive Publication Date: 2012-11-28
HEILONGJIANG UNIV
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  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the technical problem that the specific surface area of ​​CuS nanomaterials prepared in the prior art is small, thereby resulting in low photocatalytic activity, and provides a method for preparing copper sulfide with a hierarchical flower-like hollow structure

Method used

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  • Method for preparing hierarchical floriform hollow-structure CuS
  • Method for preparing hierarchical floriform hollow-structure CuS
  • Method for preparing hierarchical floriform hollow-structure CuS

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specific Embodiment approach 1

[0017] Embodiment 1: This embodiment is a method for preparing copper sulfide with hierarchical flower-shaped hollow structure, which is specifically completed according to the following steps:

[0018] 1. Completely dissolve the inorganic copper salt in alcohol at 30°C and configure it as Cu 2+ Alcoholic solution of inorganic copper salt with a molar concentration of 0.03-0.05mol / L;

[0019] Two, add sulfur source in the alcoholic solution of the inorganic copper salt prepared in step 1 at 30 DEG C, the mass ratio of sulfur source and the alcoholic solution of inorganic copper salt is 1: (1~3), at 100r / min~ Stir at a stirring speed of 300r / min for 10min to 30min, then age for 12 to 36h;

[0020] 3. Add the solution aged in step 2 into a high-pressure reactor lined with polytetrafluoroethylene for solvothermal reaction. The reaction temperature is 70-120°C, the thermal reaction time is 4h-12h, and then naturally cooled to 25 ~30°C, a black CuS precipitate was obtained;

[0...

specific Embodiment approach 2

[0024] Embodiment 2: This embodiment differs from Embodiment 1 in that the alcohol solvent described in step 1 is anhydrous methanol, absolute ethanol or a mixture of the two in any proportion, and the others are the same as Embodiment 1.

specific Embodiment approach 3

[0025] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the copper salt described in Step 1 is copper acetate or copper sulfate, and the others are the same as Embodiment 1 or Embodiment 2.

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Abstract

A method for preparing hierarchical floriform hollow-structure CuS relates to a method for preparing nano-CuS. The method aims to solve the technical problem of low photocatalytic activity of the CuS nano-material prepared by the prior art due to small specific surface area. The method comprises the following steps of: firstly, completely dissolving inorganic copper salt into alcohol; secondly, adding a sulfur source for dissolving and then performing aging; thirdly, adding the aged solution to a high-pressure reaction kettle lined with polytetrafluoroethylene for solvent thermal reaction, and then naturally cooling until the temperature reaches the room temperature; and finally, orderly performing separation, washing and drying, thereby obtaining the hierarchical floriform hollow-structure CuS. The hierarchical floriform hollow-structure CuS prepared by the method can be applied to the fields such as solar cells, electrochemistry, gas-sensitivity, catalysis and the like.

Description

technical field [0001] The invention relates to a preparation method of nanometer CuS. Background technique [0002] Due to the continuous improvement of people's requirements for environmental quality and the development of existing environmental protection technologies, highly active photocatalytic materials have attracted much attention because of their important applications in the fields of sewage treatment and air purification. CuS is a narrow bandgap P-type semiconductor with a forbidden band width of 1.85eV. CuS can be excited by 550nm light, and can completely initiate photocatalytic reactions under the irradiation of sunlight. CuS is easy to synthesize, the method is simple and easy to operate, and the yield is high. [0003] At present, CuS is still insufficient in application. CuS is a narrow-bandgap semiconductor that can be excited by visible light, so it is considered to be an important visible-light-responsive semiconductor catalyst. However, some studies...

Claims

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Application Information

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IPC IPC(8): C01G3/12B82Y30/00
Inventor 付宏刚孟祥影田国辉陈亚杰周娟曹芯蕊曲阳
Owner HEILONGJIANG UNIV
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