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Vanadium nitride (VN) porous hollow nano-fiber and preparation method thereof

A hollow nano, vanadium nitride technology, used in fiber processing, fiber chemical characteristics, spinning solution preparation, etc.

Inactive Publication Date: 2015-04-22
CHANGCHUN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There is no report on the preparation of VN porous hollow nanofibers by electrospinning technology

Method used

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  • Vanadium nitride (VN) porous hollow nano-fiber and preparation method thereof
  • Vanadium nitride (VN) porous hollow nano-fiber and preparation method thereof
  • Vanadium nitride (VN) porous hollow nano-fiber and preparation method thereof

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Embodiment

[0024] Embodiment: 2.0124g ammonium metavanadate NH 4 VO 3 with 7.1850g citric acid C 6 h 8 o 7 ·H 2 Dissolve O in an appropriate amount of deionized water, heat and stir until the solid powder is completely dissolved and then evaporate to form a gel. After cooling to room temperature, add 16.0360g N,N-dimethylformamide DMF and 2.0512g polyvinylpyrrolidone PVP, and stir for 12 hours Obtain a uniformly dispersed spinning solution; inject the spinning solution into a 10mL syringe with a 1mL plastic spray gun head, insert a graphite rod into the spinning solution as an anode, the angle between the spinneret and the horizontal plane is 30°, and spray The distance between the wire head and the receiving screen wire mesh is 18cm, the spinning voltage is 13kV, the indoor temperature is 24°C, and the relative humidity is 30%-40%. With the volatilization of the solvent, PVP / C can be obtained on the receiving screen wire mesh 6 h 8 o 7 / NH 4 VO 3 Composite nanofibers; the prepa...

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Abstract

The invention relates to a vanadium nitride (VN) porous hollow nano-fiber and a preparation method thereof, and belongs to the technical field of nano-material preparation. The method comprises the following steps: (1) preparing a spinning spinning solution; (2) preparing a PVP / C6H8O7 / NH4VO3 composite nano-fiber by adopting an electrostatic spinning technology; (3) preparing a V2O5 porous hollow nano-fiber, namely heating the prepared PVP / C6H8O7 / NH4VO3 composite nano-fiber; and (4) preparing a VN porous hollow nano-fiber, namely putting the prepared V2O5 porous hollow nano-fiber in a high-purity graphite crucible, nitriding with flowing NH3 gas to obtain the VN porous hollow nano-fiber. The VN porous hollow nano fiber has excellent crystallizing property, belongs to a cubic system, and has a diameter of 353.77+ / -2.23nm and a length more than 20mu m. The preparation method is simple and feasible, can be used for massive production, and has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to vanadium nitride porous hollow nanofibers and a preparation method thereof. Background technique [0002] Nanofiber refers to a linear material with two dimensions in the nanoscale on the three-dimensional space scale of the material, usually the radial dimension is on the order of nanometers, and the length is relatively large. Since the radial scale of nanofibers is as small as nanometers, it shows a series of characteristics, the most prominent is the large specific surface area, which increases its surface energy and activity, and then produces small size effects, surface or interface effects, and quantum size effects. , macroscopic quantum tunneling effect, etc., and therefore exhibit a series of chemical and physical (heat, light, sound, electricity, magnetism, etc.) aspects of specificity. Hollow nanofibers will have wider applications due to their larger...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/08D01F11/00D01D1/02D01D5/00
Inventor 于文生刘浩强苏卉董相廷王进贤杨铭于辉刘桂霞
Owner CHANGCHUN UNIV OF SCI & TECH
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