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Hydrothermal synthesis method of molybdenum disulfide nano flowers

A molybdenum disulfide, hydrothermal synthesis technology, applied in the direction of molybdenum sulfide, nanotechnology, etc., can solve the problem of low purity of molybdenum disulfide nanoflowers, and achieve the effect of improving the purity and ensuring the purity.

Inactive Publication Date: 2014-03-05
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings and deficiencies of the above-mentioned prior art, provide a hydrothermal synthesis method of molybdenum disulfide nanoflowers, and solve the defect that the purity of molybdenum disulfide nanoflowers obtained by existing hydrothermal synthesis is generally not high

Method used

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Examples

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Embodiment 1

[0028] A hydrothermal synthesis method of molybdenum disulfide nanoflowers, comprising the following steps:

[0029] (1) Prepare 0.72g of sodium molybdate and 1g of thioacetamide, where thioacetamide is used both as a sulfur source and as a reducing agent;

[0030] (2) Mix all the above-mentioned prepared materials into 30mL deionized water, and stir to make it evenly mixed;

[0031] (3) Put the mixed liquid obtained in step (2) into the reaction autoclave for heating, so that the substances in the mixed liquid can react. During the reaction, the temperature is 180°C, and the heating time is 28h;

[0032] (4) Wait for the solution obtained in step (3) to cool down naturally, then carry out cyclic washing and centrifugation on the solution, and after 3 cycles, dry the obtained precipitate under vacuum at 65°C to obtain disulfide Molybdenum nanoflowers.

[0033] Such as figure 1 It is the scanning electron microscope image of the hydrothermally synthesized molybdenum disulfid...

Embodiment 2

[0035] A hydrothermal synthesis method of molybdenum disulfide nanoflowers, comprising the following steps:

[0036] (1) Prepare 0.72g of sodium molybdate and 1.14g of thiourea, wherein thiourea is used as both a sulfur source and a reducing agent;

[0037] (2) Mix all the above-mentioned prepared materials into deionized water, and stir to mix evenly;

[0038] (3) Put the mixed liquid obtained in step (2) into a polytetrafluoroethylene-lined container, and then put the container into a reaction autoclave for heating, so that the substances in the mixed liquid can react. During the reaction, the temperature is 240 ℃, heating time is 20h;

[0039] (4) Wait for the solution obtained in step (3) to cool down naturally, then carry out cyclic washing and centrifugation on the solution, and after 5 cycles, dry the obtained precipitate under vacuum at 55°C to obtain disulfide Molybdenum nanoflowers.

[0040] Such as image 3 It is an ultra-high resolution transmission electron mi...

Embodiment 3

[0042] A hydrothermal synthesis method of molybdenum disulfide nanoflowers, comprising the following steps:

[0043] (1) Prepare 0.84g of sodium molybdate and 1.20g of thiourea, wherein thiourea is used as both a sulfur source and a reducing agent;

[0044] (2) Mix all the above-mentioned prepared materials into deionized water, and stir to mix evenly;

[0045] (3) Put the mixed liquid obtained in step (2) into a polytetrafluoroethylene-lined container, and then put the container into a reaction autoclave for heating, so that the substances in the mixed liquid can react. During the reaction, the temperature is 200 ℃, heating time is 24h;

[0046] (4) Wait for the solution obtained in step (3) to cool down naturally, then carry out cyclic washing and centrifugation on the solution, and after 4 cycles, dry the obtained precipitate under vacuum at 60°C to obtain disulfide Molybdenum nanoflowers.

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Abstract

The invention discloses a hydrothermal synthesis method of molybdenum disulfide nano flowers. The hydrothermal synthesis method mainly comprises the following steps: adding an inorganic molybdenum source, an organic sulfur source and a proper amount of reducing agent into deionized water, uniformly mixing the ingredients, transferring the mixture into a high pressure reaction kettle, and then heating the mixture at a high temperature for 24 hours; washing and centrifugally separating the obtained solution for multiple times, and finally drying the solution to obtain black solid powder, namely, the molybdenum disulfide nano flowers. The hydrothermal synthesis method disclosed by the invention has the beneficial effects that the whole reaction and drying process is carried out in a sealed environment to avoid direct air exposure so as to ensure the product purity; since the reducing agent adopted by the hydrothermal synthesis method disclosed by the invention can be both used as the sulfur source and as a catalyst, no impurity is generated, and thus, the product purity is further improved.

Description

technical field [0001] The invention relates to a synthesis method of nanoflowers, in particular to a hydrothermal synthesis method of molybdenum disulfide nanoflowers. Background technique [0002] Nanomaterials refer to materials that have at least one dimension in the three-dimensional space in the nanoscale range or are composed of them as basic units. Nanomaterials often produce dramatic changes in physical and chemical properties due to their small size. These changes have led to the rapid development of applied research on nanomaterials, and have been widely used in traditional materials, medical equipment, electronic equipment, coatings and other industries. [0003] Molybdenum disulfide has a hexagonal layered structure, and the layers are fixed by van der Waals force. The characteristics of this structure are widely used in solid lubricants, hydrodesulfurization catalysts, semiconductor materials, intercalation materials and lithium batteries, and are also widely...

Claims

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Application Information

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IPC IPC(8): C01G39/06B82Y40/00
Inventor 周志华林越来张平安李含冬巫江王志明
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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