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Method for in-situ preparing iron and copper dual-metal loaded carbon nano-fiber composite material

A carbon nanofiber, composite material technology, applied in fiber processing, fiber chemical characteristics, rayon manufacturing and other directions, can solve the problems of reduced specific surface area, easy loss, increased particle size, etc., to achieve broad application prospects, simple equipment requirements , the effect of large specific surface area

Inactive Publication Date: 2017-06-13
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, iron-copper bimetallic nanoparticles have problems such as easy agglomeration, easy oxidation, and easy loss. After agglomeration, the particle size increases, the specific surface area decreases, and the reactivity decreases. There are application bottlenecks in actual processing.

Method used

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  • Method for in-situ preparing iron and copper dual-metal loaded carbon nano-fiber composite material
  • Method for in-situ preparing iron and copper dual-metal loaded carbon nano-fiber composite material
  • Method for in-situ preparing iron and copper dual-metal loaded carbon nano-fiber composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Taking the molar ratio of Fe:Cu:PAN as 1:3:0.0067 as an example, it is named as FeCu / CNF-1.

[0023] Step 1: Add 1mmol of iron acetylacetonate, 3mmol of copper acetate and 1g of polyacrylonitrile (PAN) into 20mL of N,N-dimethylformamide (DMF) solution, heat and stir at 60°C for 2h to form a homogeneous Phase solution;

[0024] Step 2: Put the solution prepared above into a syringe with a metal needle, then fix the syringe on the positive pole of the electrospinning device, and clamp the positive pole of the high-voltage power supply on the metal needle, and the pushing speed of the syringe is 1.47mL / h;

[0025] The third step: spread the aluminum film on the collecting plate of the electrospinning device, and adjust the distance between the collecting plate and the metal needle to 15cm, and the voltage to 18kV to obtain continuous and stable polyacrylonitrile fibers containing iron and copper salts;

[0026] The fourth step: collect the iron-copper-containing polyacr...

Embodiment 2

[0028] Taking the molar ratio of Fe:Cu:PAN as 2:2:0.0067 as an example, it is named FeCu / CNF-2.

[0029] Step 1: Add 2mmol of iron acetylacetonate, 2mmol of copper acetate and 1g of polyacrylonitrile (PAN) into 20mL of N,N-dimethylformamide (DMF) solution, heat and stir at 60°C for 2h to form a homogeneous Phase solution;

[0030] Step 2: Place the solution prepared above into a syringe with a metal needle, then fix the syringe on the positive pole of the electrospinning device, and clamp the positive pole of the high-voltage power supply on the metal needle, and the pushing speed of the syringe is 1.4mL / h;

[0031] The third step: spread the aluminum film on the collecting plate of the electrospinning device, and adjust the distance between the collecting plate and the metal needle to 14cm, and the voltage to 18kV to obtain continuous and stable polyacrylonitrile fibers containing iron and copper salts;

[0032] The fourth step: Collect the iron-copper-containing polyacryl...

Embodiment 3

[0034] Taking the molar ratio of Fe:Cu:PAN as 3:1:0.0067 as an example, it is named FeCu / CNF-3.

[0035] Step 1: Add 3mmol of iron acetylacetonate, 1mmol of copper acetate and 1g of polyacrylonitrile (PAN) into 20mL of N,N-dimethylformamide (DMF) solution, heat and stir at 60°C for 4h to form a homogeneous Phase solution;

[0036] Step 2: Place the above-prepared solution in a syringe with a metal needle, then fix the syringe on the positive pole of the electrospinning device, and clamp the positive pole of the high-voltage power supply on the metal needle, and the pushing speed of the syringe is 1.5mL / h;

[0037] The third step: spread the aluminum film on the collecting plate of the electrospinning device, and adjust the distance between the collecting plate and the metal needle to 16cm, and the voltage to 16kV to obtain continuous and stable polyacrylonitrile fibers containing iron and copper salts;

[0038] The fourth step: Collect the iron-copper-containing polyacrylon...

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Abstract

The invention discloses a method for in-situ preparing an iron and copper dual-metal loaded carbon nano-fiber composite material. According to the method, ferric acetylacetonate serving as an iron source, cupric acetate serving as a copper source and polyacrylonitrile serving as a carbon source are used for preparing copper iron salt-containing polyacrylonitrile fibers by utilizing an electrostatic spinning method; after the copper iron salt-containing polyacrylonitrile fibers are carbonized at high temperature in inert gas, the iron and copper dual-metal loaded carbon nano-fiber composite material is in-situ prepared by utilizing carbon thermal reduction. According to the method, the operation is simple and convenient, the cost is low, the equipment requirement is low, and the regulation for a material structure is strong. The iron and copper dual-metal loaded carbon nano-fiber composite material has a high specific surface area, and has excellent catalytic degrading performance for orange II and other dyes.

Description

technical field [0001] The invention relates to a method for preparing a nanocomposite material, in particular to a method for preparing a carbon nanofiber composite material loaded with iron-copper bimetal in situ, and belongs to the field of material preparation. Background technique [0002] Iron-copper bimetallic nanoparticles have the characteristics of small particle size, large specific surface area, high surface activity, cheap and easy to obtain, and have broad application prospects in catalysis, energy, environmental restoration and pollution control. However, iron-copper bimetallic nanoparticles have problems such as easy agglomeration, easy oxidation, and easy loss. After agglomeration, the particle size increases, the specific surface area decreases, and the reactivity decreases. There are application bottlenecks in actual processing. Aiming at the shortcomings of iron-copper bimetallic nanoparticles, porous materials are usually used as carriers to combine with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/22D01F1/10D01D5/00
CPCD01F9/22D01D5/0069D01F1/10
Inventor 李健生王晶刘超胡兴茹罗瑞王连军孙秀云沈锦优韩卫清
Owner NANJING UNIV OF SCI & TECH
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