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Method for preparing non-crystal molybdemum sulfide nano powder

A nano-powder, amorphous technology, applied in the field of preparation of amorphous molybdenum sulfide nano-powder, can solve the problems of difficult industrial production and low output, and achieve the effects of simple operation, short reaction time and simple synthesis process

Inactive Publication Date: 2007-08-29
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using hydrothermal method and solvothermal method to prepare amorphous molybdenum sulfide, special high-pressure equipment is required, and the output is small, so it is difficult to industrialize production

Method used

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  • Method for preparing non-crystal molybdemum sulfide nano powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] At 90°C, dissolve 4mmol sodium molybdate and 24mmol thioacetamide in 80mL distilled water, then add 5mL polyethylene glycol, 5mL propanol and 10mL ethanol, and finally add 15mL within 2 minutes. 12mol L -1 Hydrochloric acid and tail gas hydrogen sulfide are absorbed with sodium hydroxide solution. After constant temperature reaction at 82°C for 5 minutes, the precipitate was filtered, washed and dried at 120°C for 10 hours to obtain hollow spherical amorphous MoS x Nano powder.

[0030] Then, the hollow spherical amorphous MoS x The nano-powder is put into a porcelain burning boat, put into a tubular electric furnace, calcined under a hydrogen atmosphere at 780°C, reacted for 50 minutes, cooled, and the sample is taken out to obtain a hollow spherical molybdenum disulfide nano-powder.

Embodiment 2

[0032] At 85°C, dissolve 4mmol potassium molybdate and 32mmol thioacetamide in 100mL distilled water, then add 5mLOP emulsifier and 5mL methanol, and finally add 15mL 6mol L within 2 minutes -1 Hydrochloric acid and tail gas hydrogen sulfide are absorbed with sodium hydroxide solution. After constant temperature reaction at 85°C for 5 minutes, the precipitate was filtered, washed and dried at 100°C for 12 hours to obtain hollow spherical amorphous MoS x Nano powder.

[0033] Then, the hollow spherical amorphous MoS x The nano-powder is put into a porcelain burning boat, put into a tubular electric furnace, calcined for 40 minutes at 680° C. under a nitrogen atmosphere, and then cooled to obtain a hollow spherical molybdenum disulfide nano-powder.

Embodiment 3

[0035] At 78°C, dissolve 4 mmol of ammonium molybdate and 12 mmol of thioacetamide in 180 mL of distilled water, and then add 5 mL of 0.05 mol·L -1 Hexadecyltrimethylammonium bromide, 15mL 5mol L was added within 2 minutes at the end -1 Hydrochloric acid and tail gas hydrogen sulfide are absorbed with sodium hydroxide solution. After constant temperature reaction at 95°C for 10 minutes, the precipitate was filtered, washed and dried at 120°C for 10 hours to obtain hollow spherical amorphous MoS x Nano powder.

[0036] Then, the hollow spherical amorphous MoS x The nano-powder is put into a porcelain burning boat, put into a tubular electric furnace, calcined in an argon atmosphere at 960°C for 120 minutes, and then cooled to obtain a polyhedral molybdenum disulfide nano-powder.

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Abstract

The invention relates to a manufacture method for amorphous form molybdenum sulphide nanometer powder. The feature is that: it uses solubility molybdenate, thiacetamide, strong acid and dispersing agent as raw material, dissolving solubility molybdenate and thiacetamide into deionized water, adding dispersing agent, adding strong acid in a short time, reacting at constant temperature, absorbing tail gas hydrogen disulfide by NaOH sulotion, filtering, washing, drying the depositing to gain MoSx(=2-4) nanometer powder, using it as precursor, burning and gaining amorphous form molybdenum sulphide nanometer powder that has widely application prospect in lubrication, catalyst and photo-electric-magnetism field.

Description

technical field [0001] The invention relates to a preparation method of amorphous molybdenum sulfide nanometer powder. Background technique [0002] There are many kinds of molybdenum sulfides, many of which are amorphous substances. Except for a few such as amorphous molybdenum trisulfide, which have a fixed stoichiometry, many atoms in amorphous molybdenum sulfide are non-integral. Amorphous molybdenum sulfide (MoS x ) not only can be used to prepare crystalline molybdenum disulfide, which has the reputation of "the king of solid lubrication", but also can be directly used as catalytic materials, photoelectric materials, and lubricating materials. In addition, it also shows good application prospects in high-performance self-lubricating coatings and photoelectric coating materials. Some amorphous molybdenum sulfide has been prepared by relatively simple chemical synthesis. For example, amorphous molybdenum trisulfide can be prepared by rapid precipitation and uniform pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/06B82B3/00
Inventor 胡献国胡坤宏
Owner HEFEI UNIV OF TECH
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