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Preparation method of CNTs/Ni-Fe3O4 functional material

A ni-fe3o4, cnts-fe3o4 technology, applied in the field of functional nanocomposite materials and environmental biology, can solve the problems of difficult control of coating coating amount, incapable of industrial mass production, cumbersome manufacturing process, etc., to increase the virtual permeability of magnetic permeability Department, functional diversity, wide-ranging effects

Inactive Publication Date: 2021-01-05
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All in all, the research of using carbon nanotubes to prepare composite wave-absorbing materials has been paid more and more attention by people, but the materials of metal-coated carbon nanotubes prepared by the prior art are cumbersome in manufacturing process and cannot be mass-produced in an industrialized manner. Difficult to control and difficult to recycle

Method used

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  • Preparation method of CNTs/Ni-Fe3O4 functional material
  • Preparation method of CNTs/Ni-Fe3O4 functional material
  • Preparation method of CNTs/Ni-Fe3O4 functional material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 As shown, the CNTs / Ni-Fe 3 o 4 The preparation method of functional material, its concrete steps comprise:

[0039] Step 1. Purification and activation of multi-walled carbon nanotubes:

[0040] Step 1.1, mixing concentrated nitric acid and concentrated sulfuric acid at a volume ratio of 3:1 to obtain a mixed acid, adding multi-walled carbon nanotubes to the mixed acid according to a solid-to-liquid ratio of 1:20 g / mL for purification and activation for 12 hours;

[0041] Step 1.2, filtering after purification and activation in step 1.1, washing the multi-walled carbon nanotubes with ammonia water and ionized water with a concentration of 30wt% to neutrality, and then drying to obtain multi-walled carbon nanotubes;

[0042] Step 1.3, the multi-walled carbon nanotubes purified and activated in step 1.2 are ball-milled in a planetary ball mill for 5 hours under the conditions of a ball-to-material ratio of 50:1 and a rotating speed of 500 r / min, and dr...

Embodiment 2

[0054] Such as figure 1 As shown, the CNTs / Ni-Fe 3 o 4 The preparation method of functional material, its concrete steps comprise:

[0055] Step 1. Purification and activation of multi-walled carbon nanotubes:

[0056] Step 1.1, mixing concentrated nitric acid and concentrated sulfuric acid at a volume ratio of 3:1 to obtain a mixed acid, adding multi-walled carbon nanotubes to the mixed acid according to a solid-to-liquid ratio of 1:20 g / mL for purification and activation for 12 hours;

[0057] Step 1.2, filtering after purification and activation in step 1.1, washing the multi-walled carbon nanotubes with ammonia water and ionized water with a concentration of 30wt% to neutrality, and then drying to obtain multi-walled carbon nanotubes;

[0058] Step 1.3, the multi-walled carbon nanotubes purified and activated in step 1.2 are ball-milled in a planetary ball mill for 5 hours under the conditions of a ball-to-material ratio of 50:1 and a rotating speed of 500 r / min, and dr...

Embodiment 3

[0069] Such as figure 1 As shown, the CNTs / Ni-Fe 3 o 4 The preparation method of functional material, its concrete steps comprise:

[0070] Step 1. Purification and activation of multi-walled carbon nanotubes:

[0071] Step 1.1, mixing concentrated nitric acid and concentrated sulfuric acid at a volume ratio of 3:1 to obtain a mixed acid, adding multi-walled carbon nanotubes to the mixed acid according to a solid-to-liquid ratio of 1:20 g / mL for purification and activation for 12 hours;

[0072] Step 1.2, filtering after purification and activation in step 1.1, washing the multi-walled carbon nanotubes with ammonia water and ionized water with a concentration of 30wt% to neutrality, and then drying to obtain multi-walled carbon nanotubes;

[0073] Step 1.3, the multi-walled carbon nanotubes purified and activated in step 1.2 are ball-milled in a planetary ball mill for 5 hours under the conditions of a ball-to-material ratio of 50:1 and a rotating speed of 500 r / min, and dr...

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Abstract

The invention relates to a preparation method of a CNTs / NiFe3O4 functional material, and belongs to the technical field of functional nano composite materials and environmental biology. The preparation method of the CNTs / NiFe3O4 functional material comprises the following specific steps: purifying and activating multiwalled carbon nanotubes; preparing CNTsFe3O4: preparing the CNTs / NiFe3O4 nano composite material. The CNTs / NiFe3O4 functional material prepared by the invention is used as an efficient biological catalytic material and a wave-absorbing material, has the characteristics of promoting oxidation-reduction reaction and electron transfer, is used as a stabilizer and a catalyst in sewage treatment anaerobic digestion reaction, can improve the methane yield and produce biomass energy,can play a role once being added, and has a good application prospect. The catalyst is good in dispersity in a reactor and uniform and consistent in reaction, and can be recycled to save the cost.

Description

technical field [0001] The present invention relates to a kind of CNTs / Ni-Fe 3 o 4 The invention discloses a method for preparing functional materials, belonging to the fields of functional nanocomposite materials and environmental biotechnology. Background technique [0002] Whether it is a developing country or a developed country, the treatment of high-concentration organic wastewater is an urgent problem that governments of all countries need to solve. The anaerobic digestion reaction process has a history of about two to three hundred years, and derivative processes and new upgrading methods emerge in endlessly. The extremely high adaptability of the concentration has been widely used by various countries, ranging from centralized anaerobic digestion treatment plants for sewage to small integrated fermentation tanks for water collection and drainage in villages. All these prove the advantages of the anaerobic digestion process. However, in recent years, the anaerobic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/00H01F41/02H05K9/00H01Q17/00B01J23/755B01J35/10B01J37/03B01J37/08C09K3/00C02F3/28
CPCH01F1/0018H01F41/02H05K9/0081H01Q17/00B01J23/755B01J37/03B01J37/08C09K3/00C02F3/28B01J35/33B01J35/40B01J35/61Y02E50/30
Inventor 潘学军徐化禹黄斌顾晓顾丽鹏
Owner KUNMING UNIV OF SCI & TECH
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