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Iron-manganese composite metal oxide magnetic nanofiber with tube-in-tube structure and preparation method thereof

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: 2016-07-13
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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  • Iron-manganese composite metal oxide magnetic nanofiber with tube-in-tube structure and preparation method thereof
  • Iron-manganese composite metal oxide magnetic nanofiber with tube-in-tube structure and preparation method thereof
  • Iron-manganese composite metal oxide magnetic nanofiber with tube-in-tube structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Weigh 0.4040gFe(NO 3 ) 3 9H 2 O and 0.72g50wt% Mn(NO 3 ) 2 Add the solution into a beaker filled with 6mL 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 0.8mm for electrospinning, and control the indoor temperature and relative humidity at about 25°C and 30%, respectively. The distance from the receiving plate is adjusted to 15cm, the spinning solution propulsion speed is 0.9mL / h, the voltage of the electrospinning process is 15kV, and the composite nanofibers of iron manganese metal salt and polyvinylpyrrolidone are 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 at a heating rate of ...

Embodiment 2

[0035] (1) Weigh 0.4040gFe(NO 3 ) 3 9H 2 O and 0.17gMnSO 4 ·H 2 O was added to a beaker filled with 6mL DMF, stirred until all dissolved to obtain a transparent and uniform solution, then added 1.2g 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 0.8mm for electrospinning, and control the indoor temperature and relative humidity at about 20°C and 20%, respectively. The distance from the receiving plate is adjusted to 17cm, the spinning solution propulsion speed is 0.9mL / h, the voltage of the electrospinning process is 18kV, and the composite nanofibers of iron manganese metal salt and polyvinylpyrrolidone are 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 heating rate of 3°C / min. In...

Embodiment 3

[0039] (1) Weigh 0.4000gFe respectively 2 (SO 4 ) 3 and 0.36g50wt% Mn(NO 3 ) 2 Add the solution into a beaker filled with 6mL 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 0.8mm for electrospinning, and control the indoor temperature and relative humidity at about 15°C and 35%, respectively. The distance from the receiving plate is adjusted to 20cm, the spinning solution propulsion speed is 0.9mL / h, the voltage of the electrospinning process is 16kV, and the composite nanofibers of iron manganese metal salt and polyvinylpyrrolidone are collected by the receiving plate;

[0041] (3) The composite fiber prepared in step (2) is calcined in sections. In the first stage, the temperature is raised to 250°C at a ...

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Abstract

The invention relates to an iron-manganese composite metal oxide magnetic nanofiber with a tube-in-tube structure and a preparation method thereof. The nanofiber is composed of manganese ferrite and manganese trioxide. Firstly, the spinning solution is prepared with polyvinylpyrrolidone (PVP), iron salt, manganese salt and N,N-dimethylformamide (DMF), and then the composite fiber is prepared by electrospinning technology, and finally segmental calcination is carried out. Composite oxide nanofibers with a tube-in-tube structure were obtained. The technical route of the present invention is simple, easy to operate, and the preparation process can be controlled relatively easily, and the cost of raw materials is low, the source is wide, and it is suitable for large-scale production; the use of segmental calcination technology can obtain tube-in-tube nano Fiber products, and the sample also has a certain degree of magnetism, it can be used alone or in combination with other materials in 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 attracted great interest of researchers because of its special hollow structure and large specific surface area. People have 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 synthesi...

Claims

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Application Information

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