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Method for preparing high-homodisperse zinc sulfide graphene composite material

A technology of uniform dispersion and composite material, applied in the field of preparation of nanocomposite materials, can solve the problems of complex process, many influencing factors, not suitable for scaled production, etc., and achieve the effect of simple synthesis method and strong repeatability

Inactive Publication Date: 2015-04-22
SHANGHAI NAXU IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is complicated in process, requires a wide variety of raw materials, and has many influencing factors, so it is not suitable for large-scale production.

Method used

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  • Method for preparing high-homodisperse zinc sulfide graphene composite material
  • Method for preparing high-homodisperse zinc sulfide graphene composite material
  • Method for preparing high-homodisperse zinc sulfide graphene composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take 0.016 g of graphene oxide, add it to 80 mL of dimethyl sulfoxide, and mix it ultrasonically for 2 h, then add 0.16 g of zinc acetate and 12 mg of sodium dodecylbenzenesulfonate, and transfer it into a 100 mL polytetrafluoroethylene-lined In the reaction kettle, solvothermal reaction was carried out at 180 °C for 12 h, the reaction product was washed with acetone and alcohol, and dried to obtain the final product. Such as figure 1 As shown, the synthesized composite material contains C, Zn, S elements.

Embodiment 2

[0020] Take 0.04 g of graphene oxide, add it to 80 mL of dimethyl sulfoxide, mix ultrasonically for 2 h, then add 0.1 g of zinc oxalate and 10 mg of sodium hexadecylbenzene sulfonate, stir and mix well, transfer the solution into 100 mL In a polytetrafluoroethylene-lined reactor, solvothermal reaction was carried out at 180 °C for 20 h, the reaction product was washed with acetone and alcohol, and dried to obtain the final product. figure 2 It is the SEM picture of the composite material. It can be seen from the picture that zinc sulfide is uniformly distributed on the surface of graphene, and the particle size is about 100 nm.

Embodiment 3

[0022] Take 0.2 g of graphene oxide, add 200 mL of dimethyl sulfoxide, and mix ultrasonically for 2 h, then add 0.5 g of zinc acetate and 85 mg of dodecyltrimethylammonium bromide, stir and mix well, and then transfer to a 250 mL In a polytetrafluoroethylene-lined reactor, solvothermal reaction was carried out at 200 °C for 12 h, the reaction product was washed with acetone and alcohol, and dried to obtain the final product.

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Abstract

The invention discloses a method for preparing a high-homodisperse zinc sulfide graphene composite material. The method comprises the steps that first, graphene oxide is added into dimethylsulfoxide solvent, ultrasonic dispersion is conducted, then a zinc source and an appropriate amount of surface active agent are added, stirring is conducted until the zinc source and the surface active agent are completely dissolved, the solution is transferred into a polytetrafluoroethylene lining reaction still, solvothermal reaction is conducted for 12-20 h at the proper temperature, acetone and ethyl alcohol are used for cleaning up a sample, and a final product is obtained after drying. According to the method, a simple one-step solvent thermal synthesis method is adopted, the cost is low, good repeatability is achieved, zinc sulfide nano-particles can be distributed on graphene in a highly uniform mode, and the synthetic composite material can be widely applied to the fields of photocatalysis, solar cells, dye absorption and the like.

Description

technical field [0001] The invention belongs to the preparation of nanocomposite materials, in particular to a method for preparing highly uniformly dispersed zinc sulfide / graphene composite materials. Background technique [0002] ZnS is an important wide-bandgap semiconductor material (3.6 eV at 300 K), which is widely used in ultraviolet light-emitting diodes, sensors, solar cells, electroluminescent devices and other fields. Graphene is a two-dimensional honeycomb lattice structure, only one carbon atomic layer thickness, and has very high mechanical strength, high specific surface area (2630 m 2 / g), conductive (10 6 S / cm), thermal conductivity (5300 W / mK) and chemical stability. These excellent properties of graphene make it have potential application value in many fields, such as photocatalysis, adsorption materials, lithium-ion batteries, supercapacitors, etc. Especially in the field of photocatalysis, ZnS nanocrystals can rapidly generate electron-hole...

Claims

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Application Information

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IPC IPC(8): B01J27/04
Inventor 何丹农韩哓芳张春明张现王岩岩陈超高林
Owner SHANGHAI NAXU IND
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