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Preparation method of nano ferrate/carbon nano tube composite materials

A technology of carbon nanotubes and composite materials, applied in iron compounds, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as nanoferrite/carbon nanotube composite materials that are rarely reported, and achieve excellent optoelectronics Activity, excellent performance, and uniform particle size

Inactive Publication Date: 2012-07-11
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation methods of other nanoferrite / carbon nanotube composites have been rarely reported so far

Method used

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  • Preparation method of nano ferrate/carbon nano tube composite materials
  • Preparation method of nano ferrate/carbon nano tube composite materials
  • Preparation method of nano ferrate/carbon nano tube composite materials

Examples

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Embodiment 1

[0032] Implementation example 1: the preparation method of nanometer cobalt ferrite / carbon nanotube (5 wt%) composite material, comprises the following steps:

[0033] In the first step, 0.5 g of carbon nanotubes were ultrasonically dispersed in 20 mL of concentrated nitric acid for 30 min;

[0034] In the second step, the carbon nanotubes in the first step were added to 80 mL of a mixed acid solution of concentrated sulfuric acid and concentrated nitric acid with a volume ratio of 1:1, heated to 90 °C, condensed and refluxed for 18 h;

[0035] In the third step, 10 mg of acidified carbon nanotubes was added to 20 mL of ethanol, and ultrasonically dispersed for 60 min;

[0036] In the fourth step, 2 mmol of ferric nitrate and 1 mmol of cobalt nitrate were added to 60 mL of ethanol and stirred for 10 min;

[0037] In the fifth step, the system obtained in the third step is mixed with the system obtained in the fourth step, and stirred for 30 min;

[0038] In the sixth step, t...

Embodiment 2

[0040] Implementation example 2: the preparation method of nanometer nickel ferrite / carbon nanotube (10 wt%) composite material, comprises the following steps:

[0041] In the first step, 1.0 g of carbon nanotubes were ultrasonically dispersed in 50 mL of concentrated nitric acid for 60 min;

[0042] In the second step, the carbon nanotubes in the first step are added to 100 mL of a mixed acid solution of concentrated sulfuric acid and concentrated nitric acid with a volume ratio of 1:1, heated to 100 ° C, condensed and refluxed for 12 h;

[0043] In the third step, 30 mg of acidified carbon nanotubes were added to 30 mL of ethanol, and ultrasonically dispersed for 90 minutes;

[0044] In the fourth step, 2 mmol of ferric nitrate and 1 mmol of nickel nitrate were added to 50 mL of ethanol and stirred for 30 min;

[0045] In the fifth step, the system obtained in the third step is mixed with the system obtained in the fourth step, and stirred for 60 min;

[0046] The sixth st...

Embodiment 3

[0051] Implementation example 3: the preparation method of nanometer copper ferrite / carbon nanotube (15 wt%) composite material, comprises the following steps:

[0052] In the first step, 1.5 g of carbon nanotubes were ultrasonically dispersed in 100 mL of concentrated nitric acid for 90 min;

[0053] In the second step, the carbon nanotubes in the first step were added to 150 mL of a mixed acid solution of concentrated sulfuric acid and concentrated nitric acid with a volume ratio of 1:1, heated to 120 °C, condensed and refluxed for 10 h;

[0054] In the third step, 45 mg of acidified carbon nanotubes were added to 40 mL of ethanol, and ultrasonically dispersed for 120 min;

[0055] In the fourth step, 2 mmol of ferric nitrate and 1 mmol of copper nitrate were added to 40 mL of ethanol and stirred for 50 min;

[0056] In the fifth step, the system obtained in the third step is mixed with the system obtained in the fourth step, and stirred for 90 min;

[0057] In the sixth s...

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Abstract

The invention discloses a preparation method of nano ferrate / carbon nano tube composite materials, which utilizes a carbon nano tube as a supporting material and adopts a method of solvothermal synthesis to prepare a series of nano ferrate / carbon nano tube composite materials which are even in dispersion, have magnetic property, include nano cobalt ferrite / carbon nano tubes, ferrous acid nickel / carbon nano tubes, ferrous acid copper / carbon nano tubes, zinc ferrite / carbon nano tubes, ferrous acid manganese / carbon nano tubes and the like, and have certain universality. Compared with the prior art, the preparation method of the nano ferrate / carbon nano tube composite materials utilizes ethanol as solvent. The prepared nano materials are uniform in grain size and excellent in performance and have good application prospect and economic benefits on aspects of photocatalysis sewage treatment, lithium ion batteries and the like.

Description

technical field [0001] The present invention belongs to the preparation technology of magnetic nano-ferrite composite materials, which use carbon nanotubes as supporting materials and uniformly deposit and disperse on its surface. This method has certain versatility, and a series of nano-ferrites can be prepared by using this method A salt / carbon nanotube composite material, the nanoferrite / carbon nanotube composite material has excellent photoelectric activity, and has good application prospects and economic benefits in photocatalytic sewage treatment and lithium ion batteries. Background technique [0002] Ferrites such as nano-cobalt ferrite, nickel ferrite, copper ferrite, zinc ferrite and manganese ferrite are all ferrites with a spinel structure. They have high electrical properties, high Curie temperature, and excellent stability, and have been widely used in information storage, electrical devices, and drug carriers. For example, the energy band gap of nickel ferrit...

Claims

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Application Information

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IPC IPC(8): B01J23/75B01J23/755B01J23/745B01J23/80B01J23/889B01J21/18C01G49/00
Inventor 汪信熊攀付永胜孙敬文朱俊武
Owner NANJING UNIV OF SCI & TECH
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