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Preparation method of molybdenum disulfide nano-fibers

A technology of nanofibers and molybdenum disulfide, applied in fiber treatment, fiber chemical characteristics, textiles and papermaking, etc., can solve the problems of low aspect ratio of nanomaterials, harsh preparation process conditions, complex devices, etc., and meet the requirements of environmental conditions Low cost, easy access to raw materials, and simple equipment

Inactive Publication Date: 2011-07-06
HEFEI UNIV OF TECH
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  • Summary
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  • Claims
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Problems solved by technology

It is worth noting that these methods all have problems such as complex devices, harsh preparation process conditions, long cycle times, and low aspect ratios of obtained nanomaterials.

Method used

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  • Preparation method of molybdenum disulfide nano-fibers

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Embodiment Construction

[0013] Polyvinyl alcohol with an average degree of polymerization of 1700 and a degree of alcoholysis of 88% is selected for use.

[0014] Weigh 20g of polyvinyl alcohol powder, fully swell in 200ml of deionized water for 2h, then heat in a water bath to 90°C and stir for 6h (covered with plastic wrap to prevent water evaporation), to obtain a viscous PVA solution (concentration 10wt%), measure 20ml to be use. Use a beaker to measure 5ml of dimethyl sulfoxide, weigh 0.6g of ammonium tetrathiomolybdate and add it to the beaker, stir magnetically for a certain period of time to make it dissolve evenly. The ammonium tetrathiomolybdate solution was slowly dropped into 20ml of the prepared PVA solution, and magnetically stirred for several hours to obtain a uniform electrospinning solution. Add the electrospinning solution to the syringe, and in the spinning equipment (such as figure 1 ) for electrospinning. The high-voltage generator is connected to the iron needle, and the col...

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Abstract

The invention provides a preparation method of molybdenum disulfide nano-fibers. The preparation method uses ammonium thiomolybdate as a raw material, and comprises the steps of electro-spinning liquid preparation, electrostatic spinning and sintering, wherein, an electro-spinning liquid is acquired by dissolving the ammonium thiomolybdate in a polyvinyl alcohol solution with a concentration of 7wt% to 15wt%; electrostatic spinning is conducted in a manner that the electro-spinning liquid achieves electro-spinning in an electrostatic field formed by a voltage of 10kV to 30kV between a syringeneedle and a collection screen and falls on the collection screen to form fiber felt; and sintering is conducted in a manner that the collection screen loaded with the fiber felt is sintered for 1 to3 hours at a temperature of 500 DEG C to 850 DEG C under a hydrogen atmosphere. The preparation method has the advantages that MoS2 fibers with the diameters evenly ranging from 50nm to 300nm can be prepared, equipment is simple, the operation is convenient, and XRD (X-ray diffraction) analysis shows that molybdenum disulfide is well crystallized.

Description

1. Technical field [0001] The invention relates to a method for preparing molybdenum disulfide nanofibers, in particular to a method for preparing molybdenum disulfide nanofibers by electrostatic spinning. 2. Background technology [0002] Molybdenum disulfide is a layered compound with weak van der Waals force between layers, easy to slip, and low friction coefficient. Therefore, it is widely used as a solid lubricant in the field of space machinery, and is also a type of desulfurization catalyst and space material. Studies have shown that the performance of nano-sized molybdenum disulfide is better than that of micron-sized molybdenum disulfide. For a long time, researchers have continuously invented and improved the process for preparing nano-molybdenum disulfide. [0003] At present, there are mainly two kinds of physical and chemical methods to prepare one-dimensional nanomaterials. The commonly used physical methods are laser deposition method, arc discharge method, ...

Claims

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Application Information

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IPC IPC(8): D01F9/10D01D5/00D04H3/00D04H3/002
Inventor 张学斌刘莎莎邵浩凤仪许杰丁云飞
Owner HEFEI UNIV OF TECH
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