Method for preparing nanometer molybdenum disulfide powder

A nano-molybdenum disulfide and powder technology, applied in the direction of molybdenum sulfide, etc., can solve the problems that it is difficult to obtain a product with uniform composition, cannot obtain a two-dimensional lamellar structure, and the grain size distribution is uneven, and the grain size can be reached. Uniform and controllable, low cost, and the effect of improving purity

Inactive Publication Date: 2016-10-12
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] (1) The raw materials of the atmosphere sintering method are expensive, and it is difficult to obtain a product with uniform composition;
[0006] (2) Although nano-molybdenum disulfide with controllable grain size can be obtained by hydrothermal synthesis, etc., the nano-molybdenum disulfide prepared by this method

Method used

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  • Method for preparing nanometer molybdenum disulfide powder
  • Method for preparing nanometer molybdenum disulfide powder
  • Method for preparing nanometer molybdenum disulfide powder

Examples

Experimental program
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Example Embodiment

[0034] Example 1:

[0035] Add 10mmol of ammonium molybdate and 20mmol of thiourea to the beaker, add 100ml of deionized water to the beaker, stir for 1 hour to fully dissolve the ammonium molybdate and thiourea, and transfer the solution into a 150ml volume of polyamide after the dissolution is complete. The tetrafluoroethylene-lined reaction kettle was sealed; the reaction kettle was placed in an electric heating oven, the oven temperature was set to 220°C, and the reaction time was set to 24 hours; when the reaction time expired, the reaction kettle was taken out, and the inner The mixture in the lining was suction filtered and dried; the dried solid was placed in a beaker, an aqueous solution with a volume fraction of 30% isopropanol was added, and after ultrasonic peeling for 5 hours, the dispersion was transferred to a centrifuge tube, and the centrifugation speed was 5000r / min. Under centrifugation, the supernatant liquid is retained and the solids therein are collected...

Example Embodiment

[0036] Example 2:

[0037] Add 10mmol of ammonium molybdate and 20mmol of thiourea to the beaker, add 100ml of deionized water to the beaker, stir for 1 hour to fully dissolve the ammonium molybdate and thiourea, and transfer the solution into a 150ml volume of polyamide after the dissolution is complete. The tetrafluoroethylene-lined reaction kettle was sealed; the reaction kettle was placed in an electric heating oven, the oven temperature was set to 220°C, and the reaction time was set to 18 hours; when the reaction time was up, the reaction kettle was taken out, and the inner The mixture in the lining was suction filtered and dried; the dried solid was placed in a beaker, an aqueous solution with a volume fraction of 50% isopropanol was added, and after ultrasonic peeling for 5 hours, the dispersion was transferred to a centrifuge tube, and the centrifugation speed was 7000r / min. Centrifuge, retain the supernatant and collect the solids therein, and the obtained product is...

Example Embodiment

[0038] Example 3:

[0039] Add 10mmol of ammonium molybdate and 20mmol of thiourea to the beaker, add 100ml of deionized water to the beaker, stir for 1 hour to fully dissolve the ammonium molybdate and thiourea, and transfer the solution into a 150ml volume of polyamide after the dissolution is complete. The tetrafluoroethylene-lined reaction kettle was sealed; the reaction kettle was placed in an electric heating oven, the oven temperature was set to 240°C, and the reaction time was set to 9 hours; when the reaction time expired, the reaction kettle was taken out, and the inner The mixture in the lining was suction filtered and dried; the dried solid was placed in a beaker, an aqueous solution with a volume fraction of 60% isopropanol was added, and after ultrasonic peeling for 8 hours, the dispersion was transferred to a centrifuge tube, and the centrifugation speed was 12000 r / min. Centrifuge, retain the supernatant and collect the solids therein, and the obtained product ...

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Abstract

The invention relates to a method for preparing nanometer molybdenum disulfide powder. The method includes the following steps that 1, ammonium molybdate or sodium molybdate and a sulfur source are mixed, deionized water is added, the mixture is stirred and dissolved, and after dissolution is completed, a solution is transferred into a reaction kettle and sealed; 2, the reaction kettle is put into an electric heating drying oven, and reacting is carried out for 9 hours to 24 hours; 3, the reaction kettle is taken out, the mixture in a lining is subjected to suction filtration and dried, and an aqueous solution of alcohol is added into dried solid; 4, a beaker is put into an ultrasonic cleaning pool and subjected to ultrasonic exfoliation; 5, dispersion liquid is transferred into a centrifuging tube and centrifuged, supernatant liquid is reserved, and sedimentation is removed; 6, the supernatant liquid is subjected to suction filtration and dried, and the nanometer molybdenum disulfide powder with the even-and-controllable grain size and the lamellar structure is obtained. Compared with the prior art, the method has the advantages that a device and the technology are simple, and operation is convenient; the prepared nanometer molybdenum disulfide powder is even and controllable in grain size and obvious in lamellar structure; environment pollution is avoided, and energy consumption and cost are low.

Description

technical field [0001] The invention relates to a preparation method of nano molybdenum disulfide powder, belonging to the technical field of nano material preparation. Background technique [0002] In recent years, molybdenum disulfide low-dimensional nanomaterials have achieved rapid development in the field of optoelectronic device applications, and have been successfully applied to single-photon light sources and solar cells. Nano-molybdenum disulfide powder, as the main raw material of a new generation of optoelectronic semiconductors and high-performance light source materials, has a wide band gap (~1.9eV) and excellent physical and chemical properties, such as quantum size effect, quantum tunneling effect, special Optical and electrical properties and high magnetoresistance, nonlinear optical effects, and when used as an additive, it can improve the strength, elasticity, aging resistance and chemical corrosion resistance of the material. In order to prepare nano-moly...

Claims

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Application Information

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IPC IPC(8): C01G39/06
CPCC01G39/06C01P2002/72C01P2002/84C01P2004/03C01P2004/62
Inventor 李昱秦志扬张润霖苏宝连王洪恩陈丽华吴旻阳晓宇邓兆
Owner WUHAN UNIV OF TECH
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