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Morphology-adjustable molybdenum disulfide preparation method

A technology of molybdenum disulfide and morphology, applied in the direction of molybdenum sulfide, etc., can solve problems such as poor conductivity and performance gap, and achieve stable product quality, simple and easy-to-implement product process, and good size uniformity

Inactive Publication Date: 2017-02-08
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, molybdenum disulfide has a small number of catalytic active sites and is a semiconductor material with poor conductivity, so there is still a big gap in performance compared with platinum group noble metals.

Method used

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  • Morphology-adjustable molybdenum disulfide preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Accurately weigh 1.2358g of ammonium molybdate and 2.2836g of thiourea into a beaker, add them to 70mL of deionized water, and fully stir on a magnetic stirrer until the medicines are completely dissolved to obtain a uniform, stable and transparent solution. The obtained solution was poured into a polytetrafluoroethylene reactor liner with a volume of 100 mL, placed in a stainless steel autoclave, the reaction temperature was controlled at 200 ° C, the reaction time was 24 h, and cooled to room temperature in air, and samples were collected. Molybdenum disulfide is obtained after centrifugation, washing and drying. looks like figure 1 MoS in 2 -0 shown.

Embodiment 2

[0013] Accurately weigh 1.2358g of ammonium molybdate and 2.2836g of thiourea in a beaker, and add them to the mixed solution of absolute ethanol and deionized water, wherein 10mL of absolute ethanol, 60mL of deionized water, and the total volume of the solution is 70mL. Fully stir on the stirrer until the drug is completely dissolved to obtain a uniform, stable and transparent solution. The obtained solution was poured into a polytetrafluoroethylene reactor liner with a volume of 100 mL, placed in a stainless steel autoclave, the reaction temperature was controlled at 200 ° C, the reaction time was 24 h, and cooled to room temperature in air, and samples were collected. Molybdenum disulfide is obtained after centrifugation, washing and drying. looks like figure 1 MoS in 2 -10 shown.

Embodiment 3

[0015] Accurately weigh 1.2358g of ammonium molybdate and 2.2836g of thiourea in a beaker, and add them to the mixed solution of absolute ethanol and deionized water, wherein 20mL of absolute ethanol, 50mL of deionized water, and the total volume of the solution is 70mL. Fully stir on the stirrer until the drug is completely dissolved to obtain a uniform, stable and transparent solution. The obtained solution was poured into a polytetrafluoroethylene reactor liner with a volume of 100 mL, placed in a stainless steel autoclave, the reaction temperature was controlled at 200 ° C, the reaction time was 24 h, and cooled to room temperature in air, and samples were collected. Molybdenum disulfide is obtained after centrifugation, washing and drying. looks like figure 2 MoS in 2 -20 shown.

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Abstract

The invention provides a morphology-adjustable molybdenum disulfide preparation method and relates to a method for preparing morphology-adjustable molybdenum disulfide through a mixed solvent hot method. The preparation method comprises fully stirring ammonium molybdate and thiourea as initial reactants through a magnetic stirrer through adjustment of a ratio of ethanol to deionized water in a mixed solvent until the drugs are fully dissolved so that a uniform, stable and transparent solution is obtained, pouring the solution into the lining of a polytetrafluoroethylene reactor, putting the polytetrafluoroethylene reactor into a stainless steel-made high pressure reaction vessel, carrying out a solvent heat reaction process under control of a reaction temperature and reaction time, cooling the product to the room temperature in air, collecting the samples, and carrying out centrifugation, washing and drying to obtain morphology-adjustable molybdenum disulfide. At a certain temperature, in a certain reaction time, molybdenum disulfide products with different morphologies are obtained through control of reaction conditions. The molybdenum disulfide products with different morphologies can effectively adjust catalysis performances. The preparation method has the advantages of simple processes, good product uniformity and batch production feasibility.

Description

technical field [0001] The invention relates to a method for preparing molybdenum disulfide with adjustable morphology, in particular to a method for preparing molybdenum disulfide with adjustable morphology by a mixed solvothermal method. Background technique [0002] In recent years, nano-molybdenum disulfide has been a research hotspot because it has great potential to replace platinum group noble metals as a hydrogen evolution catalyst. Nano-molybdenum disulfide electrocatalytic hydrogen evolution catalysts have low development cost and high performance, so nano-molybdenum disulfide electrocatalytic hydrogen evolution catalysts with different shapes have become an important research direction in this field. However, molybdenum disulfide has a small number of catalytic active sites and is a semiconductor material with poor conductivity, so there is still a big gap in performance compared with platinum group noble metals. In the research of nanomaterials for synthesizing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/06
CPCC01G39/06C01P2004/03
Inventor 郭志岩刘萍周俊义孟惠惠杜芳林
Owner QINGDAO UNIV OF SCI & TECH
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