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A kind of method for preparing ito hollow micro-nano fiber

A micro-nano fiber and hollow technology, applied in chemical instruments and methods, inorganic chemistry, gallium/indium/thallium compounds, etc., to achieve the effects of easy process conditions, increased safety and environmental protection, and simple preparation methods

Active Publication Date: 2017-08-04
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[201310024342.2] is to inject the spinning solution into the outer tube of the coaxial spinneret, and let the air enter the inner tube to carry out coaxial electrospinning. This method is simple to operate, but requires a special spinneret with inner and outer tubular structures. Two-phase system, more stringent control of parameters in electrospinning

Method used

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  • A kind of method for preparing ito hollow micro-nano fiber
  • A kind of method for preparing ito hollow micro-nano fiber
  • A kind of method for preparing ito hollow micro-nano fiber

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Effect test

Embodiment 1

[0023] The method for preparing ITO hollow micro-nano fibers comprises the following steps:

[0024] (1) adding the inorganic salt into the water, stirring with magnetic force until the inorganic salt is completely dissolved, then adding the polymer and stirring evenly to make a spinning solution;

[0025] The inorganic salt is In(NO 3 ) 3 4.5H 2 O and SnCl 4 ·5H 2 A mixture of O, by molar mass ratio In(NO 3 ) 3 4.5H 2 O: SnCl 4 ·5H 2 O=10: 1 accurately weighs raw materials, and described polymkeric substance is polyvinylpyrrolidone (PVP), and its mass ratio is In(NO 3 ) 3 4.5H 2 O:PVP=2:1;

[0026] (2) Inject the spinning solution into the spinneret with a syringe, use a dispensing needle with a tip angle of 45° as the nozzle of the spinneret, apply a voltage of 5kV between the dispensing needle and the collecting plate to collect the fibers The role of the spinneret is kept at a constant speed of 2000rpm for spinning, and a layer of ITO / PVP composite fibers is d...

Embodiment 2

[0030] The method for preparing ITO hollow micro-nano fibers comprises the following steps:

[0031] (1) adding the inorganic salt into the water, stirring with magnetic force until the inorganic salt is completely dissolved, then adding the polymer and stirring evenly to make a spinning solution;

[0032] The inorganic salt is In(NO 3 ) 3 4.5H 2 O and SnCl 4 ·5H 2 A mixture of O, by molar mass ratio In(NO 3 ) 3 4.5H 2 O: SnCl 4 ·5H 2 O=10: 1 accurately weighs the raw material, and the polymer is polyvinylpyrrolidone (PVP), and its mass ratio is In(NO 3 ) 3 4.5H 2 O:PVP=2:1;

[0033] (2) Inject the spinning solution into the spinneret with a syringe, use a dispensing needle with a tip angle of 45° as the nozzle of the spinneret, apply a voltage of 5kV between the dispensing needle and the collecting plate to collect the fibers The role of the spinneret is kept at a constant speed of 2000rpm for spinning, and a layer of ITO / PVP composite fibers is deposited on the ...

Embodiment 3

[0037] The method for preparing ITO hollow micro-nano fibers comprises the following steps:

[0038] (1) adding the inorganic salt into water, stirring with magnetic force until the inorganic salt is completely dissolved, then adding the polymer and stirring evenly to make a spinning solution;

[0039] The inorganic salt is In(NO 3 ) 3 4.5H 2 O and SnCl 4 ·5H 2 A mixture of O, by molar mass ratio In(NO 3 ) 3 4.5H 2 O: SnCl4 ·5H 2 O=10: 1 accurately weighs the raw material, and the polymer is polyvinylpyrrolidone (PVP), and its mass ratio is In(NO 3 ) 3 4.5H 2 O:PVP=2:1;

[0040] (2) Inject the spinning solution into the spinneret with a syringe, use a dispensing needle with a tip angle of 45° as the nozzle of the spinneret, apply a voltage of 5kV between the dispensing needle and the collecting plate to collect the fibers The role of the spinneret is kept at a constant speed of 2000rpm for spinning, and a layer of ITO / PVP composite fibers is deposited on the collec...

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Abstract

Relating to the preparation technologies of photoelectric micro-nano materials, the invention aims to provide a preparation method of an ITO hollow micro-nanofiber. The method includes: adding the mixture of In(NO3)3.4.5H2O and SnCl4.5H2O into water, and conducting magnetic stirring till complete dissolution; then adding polyvinylpyrrolidone and stirring the mixture evenly to obtain a spinning solution; injecting the solution into a spinning apparatus, taking a dispensing needle with a needle tip angle of 45 degrees as the nozzle of the spinning apparatus, and applying 5kV voltage between the dispensing needle and a collection plate; making the spinning apparatus maintain a constant rotation speed to perform spinning, and placing the composite fiber obtained by spinning in a muffle furnace to perform calcination, thus obtaining the ITO hollow micro-nanofiber. The preparation method provided by the invention is simple, has easily realizable process conditions, and can be applied to spinning of a variety of inorganic micro-nanofibers. The prepared micro-nanofiber has the characteristic of high throughput, and has potential application prospects in sensors and other fields. The method selects water as the solvent, thus ensuring the safety and environmental protection of experiment.

Description

technical field [0001] The invention belongs to the technical field of preparation of photoelectric micro-nano materials, and in particular relates to a method for preparing hollow-structured indium tin oxide (ITO) micro-nano fibers. Background technique [0002] With the development of research on nanomaterials, some new nanostructures have gradually been studied in depth, and the most widely used ones are nanofibers with hollow structures. Nanofibers with a hollow structure are fibrous nanomaterials with a diameter of nanometers or micrometers and a hollow cavity formed by many nanoparticles. Compared with other structural materials, nanofibers with hollow structures exhibit excellent physical and chemical properties, such as high specific surface area, high flux, and low density. Among them, the cavity is the best carrier for wrapping various functional materials, and the obtained hollow system constitutes a variety of functional nanofibers. In addition, indium tin oxid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G15/00
CPCC01G15/00C01P2004/03C01P2004/61
Inventor 杨斌张倩陈欢欢吴旭
Owner ZHEJIANG SCI-TECH UNIV