Method for preparing hexagonal copper sulfide nano-sheets

A nanosheet, copper sulfide technology, applied in copper sulfide, nanotechnology, nanotechnology and other directions, to achieve the effect of low cost, high efficiency and simple operation

Active Publication Date: 2018-09-14
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention provides a method for preparing hexagonal copper sulfide nanosheets in order to solve many problems existing in the technology of existing copper sulfide nanomaterials

Method used

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  • Method for preparing hexagonal copper sulfide nano-sheets
  • Method for preparing hexagonal copper sulfide nano-sheets
  • Method for preparing hexagonal copper sulfide nano-sheets

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preparation example Construction

[0022] A preparation method for hexagonal copper sulfide nanosheets, comprising the following steps:

[0023] Mix copper salt and long-chain alkylamine, heat and vacuumize to dissolve, so that copper ions and amine groups are complexed to form reaction solution A; the molar concentration of copper salt is 0.10-0.50mol L -1 ;

[0024] Heat and dissolve sulfur powder and long-chain alkylamine to form reaction solution B; the molar concentration of sulfur powder is 0.50-5.0mol L -1 ;

[0025] At a reaction temperature of 80-180°C, add reaction solution B to reaction solution A to form a mixed solution, keep warm and react for 0.5-24 hours; wherein the molar ratio of copper salt and sulfur powder is 1:2-1:4;

[0026] After the reaction is finished, absolute ethanol is added to the mixed solution to precipitate the copper sulfide nanosheets from the solution, and the precipitated material is centrifugally washed and dried with absolute ethanol to obtain copper sulfide nanosheets ...

Embodiment 1

[0034] A preparation method for hexagonal copper sulfide nanosheets, comprising the following steps:

[0035] Add 6 mmol of cuprous chloride and 40 ml of dodecylamine into the reaction vessel, heat to 100°C, vacuumize for 30 minutes, and keep for 4 hours.

[0036] Heat 18mmol of sulfur powder and 20ml of dodecylamine to 95°C to dissolve them, then quickly add the sulfur powder solution into the copper salt solution prepared in ①, and react at 95°C for 9h. After the reaction is over, add enough absolute ethanol to the solution to precipitate the copper sulfide nanosheets from the solution, and the precipitated material is centrifugally washed and dried with absolute ethanol to obtain hexagonal copper sulfide nanosheets with a yield of 87 %.

[0037] The X-ray diffraction pattern of the obtained hexagonal copper sulfide nanosheets is as follows figure 1 shown. Depend on figure 1 It can be seen that the prepared material is copper sulfide with a hexagonal indigoxite structure...

Embodiment 2

[0039] Add 6mmol of cuprous chloride and 30ml of octadecylamine into the reaction vessel, heat to 100°C, vacuumize for 30 minutes, and keep for 4h.

[0040] Heat 12mmol of sulfur powder and 10ml of octadecylamine to 95°C to dissolve them, then quickly add the sulfur powder solution to the copper salt solution prepared in ①, and react at 120°C for 6h. After the reaction is over, add enough absolute ethanol to the solution to precipitate the copper sulfide nanosheets from the solution, and the precipitated material is centrifugally washed and dried with absolute ethanol to obtain hexagonal copper sulfide nanosheets with a yield of 86 %.

[0041] Figure 4 is a scanning electron micrograph of the obtained hexagonal copper sulfide nanosheets. As can be seen from the figure, the hexagonal copper sulfide nanosheets are similar to the copper sulfide nanosheets obtained in Example 1.

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Abstract

The invention belongs to the field of nano-material preparation, and particularly discloses a method for preparing hexagonal copper sulfide nano-sheets. The method includes steps of mixing copper saltand long-chain alkylamine with each other, heating and vacuumizing the copper salt and the long-chain alkylamine to dissolve the copper salt and the long-chain alkylamine and carrying out complexation on copper ions and amino to form reaction liquid A; heating and dissolving powdered sulfur and long-chain alkylamine to form reaction liquid B; adding the reaction liquid B into the reaction liquidA to form mixed solution; carrying out reaction, then adding absolute ethyl alcohol into the mixed solution to dissolve copper sulfide nano-sheets out from solution, and centrifugally washing and drying dissolved substances by the aid of absolute ethyl alcohol to obtain the copper sulfide nano-sheets with hexagonal structures. The method has the advantages that the long-chain alkylamine is used asa structure-directing agent and a solvent, accordingly, growth of copper sulfide nano-crystals can be effectively controlled in reaction procedures, excellent directing effects can be realized for anisotropic growth of the hexagonal copper sulfide nano-sheets, and excellent protective media further can be provided to the morphological regularity of the hexagonal copper sulfide nano-sheets.

Description

technical field [0001] The invention belongs to the field of nanomaterial preparation, in particular to a preparation method of hexagonal copper sulfide nanosheets. Background technique [0002] The controllable preparation and application of nanomaterials has become one of the important topics in the field of nanotechnology. Transition metal dichalcogenides are special semiconductor materials with both physical and chemical functions. Among them, copper sulfide (CuS), as a low-toxic p-type semiconductor material, has excellent optical, electrical and catalytic properties, and has a wide range of application values ​​in microwave absorption, photoelectric energy conversion, biomedicine, battery electrodes, sensors, catalysis and other fields. great attention of researchers. With the development of nanotechnology, due to the quantum size effect, surface effect and macroscopic quantum tunneling effect, copper sulfide nanomaterials have photoelectric properties that cannot be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/12B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G3/12C01P2002/72C01P2004/03C01P2004/22
Inventor 白利忠王彦辉刘亚青程帅帅赵贵哲安东张志毅
Owner ZHONGBEI UNIV
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