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Nitrogen-doped carbon nanodot/magnetic metallic oxide composite nanofiber material, preparation method and application thereof

A technology of composite nanofibers and nitrogen-doped carbon, applied in chemical instruments and methods, chemical characteristics of fibers, chemical/physical processes, etc. problems such as easy agglomeration, to achieve the effect of promoting the development and commercialization process, the preparation method is simple, and the catalytic activity is high

Active Publication Date: 2017-08-01
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional methods for preparing composite materials of metal oxides and nitrogen-doped carbon mainly include arc discharge method, chemical vapor deposition method, pyrolysis method, etc. The composite nanomaterials prepared by these methods are prone to agglomeration, uneven shape and size, etc. Disadvantages that make the performance advantages of composite nanomaterials unrealizable

Method used

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  • Nitrogen-doped carbon nanodot/magnetic metallic oxide composite nanofiber material, preparation method and application thereof
  • Nitrogen-doped carbon nanodot/magnetic metallic oxide composite nanofiber material, preparation method and application thereof
  • Nitrogen-doped carbon nanodot/magnetic metallic oxide composite nanofiber material, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 0.9 g of ferric nitrate and 0.9 g of polyvinylpyrrolidone (PVP) were dissolved in a mixed solution of 5 mL of DMF and 5 mL of isopropanol. Stir magnetically at room temperature to obtain a homogeneous thick spinning solution precursor. The spinning liquid precursor was injected into the glass spinning tube of the electrospinning device, the spinning distance was 20cm, and the spinning voltage was 18kV. The resulting PVP / Fe(NO 3 ) 3 composite nanofibers. PVP / Fe(NO 3 ) 3 The composite nanofibers were calcined in air atmosphere (500°C, 4h) to obtain Fe 2 o 3 Nanofibers. Fe obtained under this condition 2 o 3 The morphology of the nanofibers is all fibrous, the fiber diameter is about 200-300nm, and the quality of the obtained product is about 50mg.

Embodiment 2

[0027]0.9 g of ferric nitrate and 0.4 g of polyvinylpyrrolidone (PVP) were dissolved in a mixed solution of 5 mL of DMF and 5 mL of isopropanol. Stir magnetically at room temperature to obtain a homogeneous thick spinning solution precursor. The spinning solution was injected into the glass spinning tube, the spinning distance was 20cm, and the spinning voltage was 18kV. The resulting PVP / Fe(NO 3 ) 3 composite nanofibers. PVP / Fe(NO 3 ) 3 The composite nanofibers were calcined in air atmosphere (500°C, 4h) to obtain Fe 2 o 3 Nanofibers. With respect to embodiment 1, the Fe obtained under this condition 2 o 3 Except that most of the nanofibers are fibrous, the diameter of the fiber is about 100-250nm, and there are a small amount of granular products, and the quality of the obtained product is about 50mg.

Embodiment 3

[0029] 0.9 g of ferric nitrate and 1.5 g of polyvinylpyrrolidone (PVP) were dissolved in a mixed solution of 5 mL of DMF and 5 mL of isopropanol. Stir magnetically at room temperature to obtain a homogeneous thick spinning solution precursor. The spinning solution was injected into the glass spinning tube, the spinning distance was 20cm, and the spinning voltage was 18kV. The resulting PVP / Fe(NO 3 ) 3 composite nanofibers. PVP / Fe(NO 3 ) 3 The composite nanofibers were calcined in air atmosphere (500°C, 4h) to obtain Fe 2 o 3 Nanofibers. Fe obtained under this condition 2 o 3 The morphology of the nanofibers is fibrous, but compared with Example 1, the diameter is thicker, the fiber diameter is about 300-500nm, and the quality of the obtained product is about 50mg.

[0030] 2. In situ polymerization to prepare Fe 2 o 3 / polypyrrole composite nanofiber

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Abstract

The invention discloses a nitrogen-doped carbon nanodot / magnetic metallic oxide composite nanofiber material, a preparation method and application thereof, and belongs to the technical field of controllable preparation of metallic oxide based composite nano-materials. An electrospinning technique is utilized to be combined with air atmosphere calcination, in-situ oxidizing polymerization and an inert atmosphere high temperature calcination technique to prepare the nitrogen-doped carbon nanodot / magnetic metallic oxide composite nanofiber material. The whole morphology of the composite material is fibrous, the surface of fiber is decorated with nitrogen-doped carbon nanodots of 5 to 15nm. The method is simple and practical and has good repeatability. A nitrogen-doped carbon nanodot / magnetic metallic oxide composite nanofiber zymoid catalyst prepared through the method has the advantages of simple preparation method, high activity and good catalytic activity on zymoid catalytic oxidizing reaction. The prepared composite nanofiber material has important significance on promoting development and commercialization processes of the zymoid catalyst.

Description

technical field [0001] The invention belongs to the technical field of controllable preparation of metal oxide-based composite nanomaterials, and specifically relates to a nitrogen-doped carbon nanodot / magnetic metal oxide composite nanofiber material, a preparation method and its application in enzyme-like catalysis. Background technique [0002] Metal oxides have attracted considerable attention over the past few decades due to their abundant crystal structures and active redox properties. Due to the special structure and novel properties, various metal oxide nanomaterials including nanoparticles, nanowires, nanorods, nanobelts, nanotubes, etc. have been extensively studied and reported. and other fields have many potential applications. [0003] Composites obtained by combining metal oxides with carbon materials often have better properties than single components. Carbon materials theoretically have a large specific surface area, ultra-high electrical conductivity, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F11/00D01F9/08B01J27/24
CPCD01F9/08D01F11/00B01J27/24B01J35/33
Inventor 卢晓峰姜颜洲王策
Owner JILIN UNIV
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