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Magnetic Fe3O4 nano-fiber material as well as preparation method thereof and application thereof in catalytic reaction of mimetic peroxidase

A technology of peroxidase and nanofibers, which is applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, fiber chemical characteristics, etc., can solve the problems of difficult preparation of nanofiber materials

Inactive Publication Date: 2017-09-12
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although various structures of Fe 3 o 4 Nanomaterials have been extensively studied, but for one-dimensional Fe 3 o 4 The preparation of nanofiber materials is still a relatively difficult subject

Method used

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  • Magnetic Fe3O4 nano-fiber material as well as preparation method thereof and application thereof in catalytic reaction of mimetic peroxidase
  • Magnetic Fe3O4 nano-fiber material as well as preparation method thereof and application thereof in catalytic reaction of mimetic peroxidase
  • Magnetic Fe3O4 nano-fiber material as well as preparation method thereof and application thereof in catalytic reaction of mimetic peroxidase

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 0.9 g of ferric nitrate and 0.9 g of polyvinylpyrrolidone (PVP) were dissolved in a mixed solution of 6 mL of DMF and 6 mL of isopropanol. Stir magnetically at room temperature to obtain a uniform spinning precursor solution. Then, an electrospinning device was used to spin under the conditions of a spinning distance of 20 cm and a spinning voltage of 18 kV to prepare PVP / iron nitrate nanofibers. Then calcined at 450°C for 3 hours in the air to obtain pink Fe 2 o 3 Nanofibers. Fe obtained under this condition 2 o 3 The morphology is fibrous, and the mass of the obtained product is about 50 mg.

Embodiment 2

[0026] 0.9 g of ferric nitrate and 0.4 g of polyvinylpyrrolidone (PVP) were dissolved in a mixed solution of 6 mL of DMF and 6 mL of isopropanol. Stir magnetically at room temperature to obtain a uniform spinning precursor solution. Then, an electrospinning device was used to spin under the conditions of a spinning distance of 20 cm and a spinning voltage of 18 kV to prepare PVP / iron nitrate nanofibers. Then calcined at 450°C for 3 hours in the air to obtain pink Fe 2 o 3 Nanofibers. With respect to embodiment 1, the Fe obtained under this condition 2 o 3 The shape of nanofibers is mostly fibrous, and there are a small amount of granular products, and the quality of the obtained product is about 50 mg.

Embodiment 3

[0028] 0.9 g of ferric nitrate and 1.5 g of polyvinylpyrrolidone (PVP) were dissolved in a mixed solution of 6 mL of DMF and 6 mL of isopropanol. Stir magnetically at room temperature to obtain a uniform spinning precursor solution. Then, an electrospinning device was used to spin under the conditions of a spinning distance of 20 cm and a spinning voltage of 18 kV to prepare PVP / iron nitrate nanofibers. Then calcined at 450°C for 3 hours in the air to obtain pink Fe 2 o 3 Nanofibers. Fe obtained under this condition 2 o 3 The appearance of the nanofibers is fibrous, but the diameter is thicker than that of Example 1, and the quality of the obtained product is about 50 mg.

[0029] Preparation of Fe by Polymer Assisted Thermal Reduction in Inert Atmosphere 3 o 4 Nanofibers

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Abstract

The invention relates to a magnetic Fe3O4 nano-fiber material as well as a preparation method thereof and application thereof in a catalytic reaction of mimetic peroxidase, belonging to the technical field of preparation of magnetic metal oxide nanomaterials with specific morphologies. The magnetic Fe3O4 nano-fiber material is prepared by means of the three steps of electrospinning technique, high-temperature calcination in air atmosphere and polymer-assisted inert atmosphere thermal reduction. The obtained Fe3O4 material has a fibrous overall morphology and has a fiber diameter of 100-200nm. The method is simple and easy to implement and good in repeatability. The Fe3O4 nano-fiber material prepared by the method has excellent catalytic performance, and can be used as a mimetic peroxidase catalyst, and the catalytic activity of the Fe3O4 nano-fiber material is much higher than that of Fe3O4 nanoparticles prepared by the traditional method.

Description

technical field [0001] The invention belongs to the technical field of controllable preparation of metal oxide nanofiber materials, in particular to a magnetic Fe 3 o 4 Nanofibrous materials, preparation methods and their applications in peroxidase-like catalyzed reactions. Background technique [0002] Since the discovery of carbon nanotubes, one-dimensional nanostructured materials have gradually attracted widespread attention. In the past few decades, not only one-dimensional carbon nanostructure materials have been widely studied, but also one-dimensional nanostructure materials such as metals, metal oxides, metal sulfides, and functional polymers have also attracted special interest, especially the metal oxides. One-dimensional nanostructured materials. Due to its special electron transport properties, rich crystal structure and active redox properties, it has excellent optical, electrical and magnetic properties. At present, a variety of metal oxide one-dimensional...

Claims

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Application Information

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IPC IPC(8): D01F9/08D01F11/00B01J23/745
CPCD01F9/08D01F11/00B01J23/745B01J35/33B01J35/58
Inventor 卢晓峰陈思晖王策
Owner JILIN UNIV
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