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Ferrous-manganese combined metal oxide magnetic nanofiber with pipe-in-pipe structure and preparation method of ferrous-manganese combined metal oxide magnetic nanofiber

A magnetic nano-composite metal technology, applied in fiber processing, textiles and papermaking, artificial filaments made of inorganic raw materials, etc., to achieve the effect of not easy to hydrolyze, easy to prepare, and easy to operate in the spinning process

Inactive Publication Date: 2015-09-23
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the tube-in-tube structure prepared by Xu's group is pure phase, and the tube-in-tube structure of composite oxides has not been reported so far. Therefore, further preparation of composite oxide nanofibers with a tube-in-tube structure is also of great importance. and application value

Method used

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  • Ferrous-manganese combined metal oxide magnetic nanofiber with pipe-in-pipe structure and preparation method of ferrous-manganese combined metal oxide magnetic nanofiber
  • Ferrous-manganese combined metal oxide magnetic nanofiber with pipe-in-pipe structure and preparation method of ferrous-manganese combined metal oxide magnetic nanofiber
  • Ferrous-manganese combined metal oxide magnetic nanofiber with pipe-in-pipe structure and preparation method of ferrous-manganese combined metal oxide magnetic nanofiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Weigh 0.4040g Fe(NO 3 ) 3 9H 2 O and 0.72g 50wt% Mn(NO 3 ) 2 Add the solution into a beaker containing 6 mL of DMF, stir until it is completely dissolved to obtain a transparent and uniform solution, then add 1g of PVP, mix and stir evenly, and obtain a transparent and viscous spinning solution;

[0031] (2) Pour the spinning solution prepared in step (1) into a syringe with a stainless steel needle with an outer diameter of 0.8 mm for electrospinning, and control the indoor temperature and relative humidity at about 25°C and 30%, respectively. The distance from the receiving plate was adjusted to 15 cm, the propulsion speed of the spinning solution was 0.9 mL / h, the voltage of the electrospinning process was 15 kV, and the composite nanofibers of iron-manganese metal salt and polyvinylpyrrolidone were collected by the receiver;

[0032] (3) The composite fiber prepared in step (2) is calcined in sections. In the first stage, the temperature is raised to 300°C a...

Embodiment 2

[0035] (1) Weigh 0.4040g Fe(NO 3 ) 3 9H 2 O and 0.17g MnSO 4 · h 2 O was added to a beaker containing 6 mL of DMF, stirred until all dissolved to obtain a transparent and uniform solution, then added 1.2 g of PVP, mixed and stirred evenly, to obtain a transparent and viscous spinning solution;

[0036] (2) Pour the spinning solution prepared in step (1) into a syringe with a stainless steel needle with an outer diameter of 0.8 mm for electrospinning, and control the indoor temperature and relative humidity at about 20°C and 20%, respectively. The distance from the receiving plate was adjusted to 17 cm, the propulsion speed of the spinning solution was 0.9 mL / h, and the voltage of the electrospinning process was 18 kV. The composite nanofibers of iron-manganese metal salt and polyvinylpyrrolidone were collected by the receiving plate;

[0037] (3) Calcinate the composite fibers prepared in step (2) in stages. In the first stage, the temperature is raised to 350°C at a heat...

Embodiment 3

[0039] (1) Weigh 0.4000g Fe respectively 2 (SO 4 ) 3 and 0.36g of 50wt% Mn(NO 3 ) 2 Add the solution into a beaker containing 6 mL of DMF, stir until it is completely dissolved to obtain a transparent and uniform solution, then add 1g of PVP, mix and stir evenly, and obtain a transparent and viscous spinning solution;

[0040] (2) Pour the spinning solution prepared in step (1) into a syringe with a stainless steel needle with an outer diameter of 0.8 mm for electrospinning, and control the indoor temperature and relative humidity at about 15°C and 35%, respectively. The distance from the receiving plate was adjusted to 20 cm, the propulsion speed of the spinning solution was 0.9 mL / h, and the voltage during the electrospinning process was 16 kV. The composite nanofibers of iron-manganese metal salt and polyvinylpyrrolidone were collected by the receiving plate;

[0041] (3) The composite fiber prepared in step (2) is calcined in sections. In the first stage, the temperatu...

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Abstract

The invention relates to a ferrous-manganese combined metal oxide magnetic nanofiber with a pipe-in-pipe structure and a preparation method of the ferrous-manganese combined metal oxide magnetic nanofiber. The nanofiber comprises manganous ferrite and manganese sesquioxide. The preparation method comprises the following steps: at first, preparing a spinning solution from polyvinylpyrrolidone (PVP), ferric salt, manganous salt and N,N-dimethylformamide (DMF), then preparing a composite fiber through an electrostatic spinning technology, and at last, calcining segment by segment to obtain the combined metal oxide magnetic nanofiber with the pipe-in-pipe structure. According to the combined metal oxide magnetic nanofiber and the preparation method, the technical route is simple, the operation is easy, the preparation process can be controlled relatively simply and conveniently, the raw materials are low in price, and wide in source, and the suitability for large-scale production is realized; through the adoption of a technology of calcining segment by segment, a nanofiber product, of which the appearance and the size are uniform, with the pipe-in-pipe structure can be obtained, the sample has certain magnetism, and can be independently applied to or compounded with other materials to be applied to the fields of sewage treatment and catalysis.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic non-metallic nanometer materials, and relates to an iron-manganese composite metal oxide magnetic nanofiber with a tube-in-tube structure and a preparation method thereof. Background technique [0002] In recent years, one-dimensional oxide nanomaterials (such as nanowires, nanorods, and nanotubes) have attracted more and more attention from researchers, mainly due to their excellent electrical, optical, magnetic, and catalytic properties. There are huge application prospects in many fields. Among these one-dimensional structures, the tubular structure has aroused great interest of researchers because of its special hollow structure and large specific surface area. People successively used hydrothermal method (Chemical Journal of Chinese Universities, 2008, 29(2):240 -243), hard template method (Magnetic Materials and Devices, 2007, 38: 15-18) and electrospinning to synthesize a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/08D01D5/00
Inventor 杨萍董晓斌
Owner UNIV OF JINAN
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