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Method for preparing nanometer metallic sulfide

A technology of nanometer metals and sulfides, applied in chemical instruments and methods, molybdenum sulfide, tungsten compounds, etc., can solve the problems of cumbersome process routes and increase process costs, and achieve wide and cheap raw materials, simple and easy processes, and preparation methods simple effect

Inactive Publication Date: 2006-07-19
唐百仲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this technology is that the process route is cumbersome and must be divided into two steps: the preparation of molybdenum oxide nanowires and the vulcanization reaction, thus increasing the process cost, and the size of the product is sub-millimeters, not nanomaterials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The production method of molybdenum disulfide nanomaterials is to use hydrated ammonium molybdate as molybdenum source, porous molybdenum trioxide as carrier material, convert hydrated ammonium molybdate into molybdenum trioxide crystal in situ in the molybdenum oxide channel by heating and cracking; add gold / iron thin film catalyst, the catalyst can be prepared by vacuum evaporation or sputtering deposition technology on the silicon (111) substrate; finally, in the high temperature cracking furnace at a temperature of 800°C-1100°C, hydrogen sulfide gas and hydrogen are introduced simultaneously, The hydrogen partial pressure is 8%-20%, and the molybdenum disulfide nanometer material can be generated under the limitation of the molybdenum oxide channel.

Embodiment 2

[0014] Further production methods of molybdenum disulfide nanomaterials:

[0015] (1) Preparation of carrier and molybdenum source composite material: 12.36 grams of ammonium molybdate tetrahydrate was dissolved in 70 milliliters of distilled water, stirred, and 3 grams of gamma-type porous molybdenum trioxide with a specific surface area greater than 200 square meters per gram was added, and continued to stir for 2 hours ;

[0016] (2) Preparation of catalyst metal thin film: a 100-300-meter iron / gold thin film is prepared on a (111)-oriented silicon substrate by vacuum evaporation, sputtering deposition or plasma coating technology.

[0017] (3) heat conversion prepared in step (1), the temperature is 350-450 ° C, the holding time is 3-7 hours and the composite molybdenum source / molybdenum oxide material is added in a heating furnace. The purpose of this step is to convert ammonium molybdate to molybdenum trioxide, which is characterized by pale green crystals.

[0018] (4...

Embodiment 3

[0021] The production method of tungsten sulfide nanomaterials also uses hydrated ammonium tungstate as the tungsten source and porous tungsten oxide as the carrier material, and converts hydrated ammonium tungstate into tungsten oxide crystals in situ in the tungsten oxide channels by heating and cracking; adding gold / iron film Catalyst, the catalyst can be prepared by vacuum evaporation or sputtering deposition technology on the silicon (111) substrate; finally, in the high-temperature cracking furnace at a temperature of 800°C-1100°C, hydrogen sulfide is introduced to participate in the reaction, and in the tungsten oxide channel Formation of tungsten sulfide nanomaterials under confinement.

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PUM

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Abstract

The invention discloses a preparation method for nano molybdenum disulfide and tungsten sulfide. Wherein, with ammonium molybdate / tungstate hydrate as molybdenum / tungsten source and porous molybdenum trioxide / tungsten oxide as carrier, thermal cracking to original converse into molybdenum trioxide / tungsten oxide crystal in carrier pore channel; in high-temperature cracking furnace of 800-1100Deg, leading H2S gas and H2 gas with 8-20% partial pressure / H2S gas to generate the final product on limit of pore carrier channel.

Description

technical field [0001] The invention belongs to a preparation method of nanometer metal sulfide, in particular to a preparation method of nanometer molybdenum disulfide material and nanometer tungsten sulfide. Background technique [0002] Metal sulfides can be used as lubricants, catalysts, electrode materials, intercalation compounds, and energy materials, and have broad industrial application prospects and development value. The authorized patents and previous research work mainly studied the large-scale materials of molybdenum disulfide and tungsten disulfide. The disadvantage is that the lubricating particles on the scale of millimeters are easy to damage the working parts such as the gear surface, so the amount of them added to the auxiliary grease is very small. low, which limits its practical application. Therefore, it is imperative to develop nano-scale molybdenum sulfide lubricants. [0003] There are few international reports on the preparation methods of nano-m...

Claims

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Application Information

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IPC IPC(8): C01G39/06C01G41/00
Inventor 唐百仲
Owner 唐百仲
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