Method for preparing hollow copper sulphide crystal with nano-twin structure

A technology of nano twinning and copper sulfide, applied in the field of preparation of hollow copper sulfide crystals

Inactive Publication Date: 2012-02-15
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there is no method in the prior art that can conveniently and quickly prepare hollow copper sulfide crystals with uniform size, regular shape, good monodispersity and nano-twin structure.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] This embodiment contains the preparation method of the hollow copper sulfide crystal of nano-twin structure, comprises the following steps:

[0019] Step 1: Na 2 Mix 0.05g of S powder, 0.001g of NaOH powder and 100mL of absolute ethanol to prepare a solution, and then use a magnetic stirrer to stir the above solution for 5min;

[0020] Step 2: The shape is hexahedron, the particle size is 5.0μm, and the weight is 0.2g Cu 2 O powder is added to the mixed solution prepared in step 1, and stirred for 0.01min to obtain Cu 2 OC x S y Core-shell structure crystal;

[0021] Step 3: the Cu obtained in Step 2 2 OC x S y The core-shell structure crystal was first centrifuged and washed with absolute ethanol at 6000rpm for 3 times, each time for 5min, and then the Cu 2 OC x S y The core-shell structure crystals were placed in a vacuum drying oven and dried at 30°C for 5 hours to obtain pure and dry Cu 2 OC x S y Core-shell structure crystal;

[0022] Step 4: To the p...

Embodiment 2

[0026] This embodiment contains the preparation method of the hollow copper sulfide crystal of nano-twin structure, comprises the following steps:

[0027] Step 1: Na 2 Mix 25.0g of S powder, 15.0g of NaOH powder and 250mL of absolute ethanol to prepare a solution, and then use a magnetic stirrer to stir the above solution for 20min;

[0028] Step 2: Shape Cu 2 O powder is added to the mixed solution prepared in step 1, and stirred for 5 hours to obtain Cu 2 OC x S y Core-shell structure crystal;

[0029] Step 3: the Cu obtained in step 2 2 OC x S y The core-shell structure crystals were first centrifuged and washed with absolute ethanol at 6000 rpm for 5 times, each time for 1 min, and finally the Cu 2 OC x S y The core-shell structure powder is placed in a vacuum drying oven and dried at 60°C for 2 hours to obtain pure and dry Cu 2 OC x S y Core-shell structure crystal;

[0030] Step 4: To the pure dry Cu obtained in Step 3 2 OC x S y Deionized water is adde...

Embodiment 3

[0034] This embodiment contains the preparation method of the hollow copper sulfide powder of nano-twin structure, comprises the following steps:

[0035] Step 1: Na 2 Mix 5.8g of S powder, 2.1g of NaOH powder and 150mL of absolute ethanol to prepare a solution, and then use a magnetic stirrer to stir the above solution for 12min;

[0036] Step 2: Shape the octahedron, the particle size is 1.0μm, and the weight is 1.0g Cu 2 O powder is added to the mixed solution prepared in step 1, and stirred for 0.5h to obtain Cu 2 OC x S y Core-shell structure crystal;

[0037] Step 3: the Cu obtained in Step 2 2 OC x S y The core-shell structure crystals were first centrifuged and washed with absolute ethanol at 6000rpm for 4 times, each time for 3min, and finally the Cu 2 OC x S y The core-shell structure powder is placed in a vacuum drying oven and dried at a temperature of 40°C for 3 hours to obtain pure and dry Cu 2 OC x S y core-shell structure;

[0038] Step 4: To the ...

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Abstract

The invention relates to a method for preparing a hollow copper sulphide crystal with a nano-twin structure, which comprises the following steps: preparing a mixed solution of Na2S and NaOH, preparing a Cu2O@CuxSy core-shell structure crystal, washing and drying the Cu2O@CuxSy core-shell structure crystal, adding deionized water in the pure and dry Cu2O@CuxSy core-shell structure and stirring to obtain a core-shell structure suspension with uniform distribution of Cu2O@CuxSy, adding ammonia liquor in the core-shell structure suspension with uniform distribution of Cu2O@CuxSy and standing to obtain a hollow copper sulphide crystal primary product with the nano-twin structure, washing and drying the hollow copper sulphide crystal primary product with the nano-twin structure to obtain the hollow copper sulphide crystal with the nano-twin structure. The preparation method has simple process, the prepared hollow copper sulphide crystal with the nano-twin structure has good monodispersity and uniform dimension.

Description

technical field [0001] The invention relates to a method for preparing a copper sulfide crystal, in particular to a method for preparing a hollow copper sulfide crystal containing a nano-twin structure. Background technique [0002] As a non-stoichiometric p-type semiconductor, copper sulfide has a band gap of 1.2-2.0eV. Due to its unique photoelectric properties, it has been used in solar cells, superconductors, nano switches, photoelectric converters, and gas sensors. Applications. Micro-nano particles with a hollow structure have the characteristics of large specific surface area, low density, and good permeability, and have broad application prospects in the fields of catalysis, biochemistry, and material science. Particles with hollow structures can be used as drug carriers, catalysts, cell protection layers, electrical components, seasonings, etc., to obtain important applications in the fields of biochemistry and medicine. The in-situ sacrificial template method is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/12B82Y40/00
Inventor 孙少东孔春才杨志懋宋晓平丁秉钧
Owner XI AN JIAOTONG UNIV
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