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Preparation method of carbon-coated iron oxide nanotube and product and application of nanotube

A technology of iron oxide nanometer and carbon coating, which is applied in the direction of iron oxide, iron oxide/iron hydroxide, nano-carbon, etc. It can solve the problems of unfavorable wide application, complex method, and many processes, and achieve short reaction time and high reaction temperature. The effect of low cost and less technological process

Active Publication Date: 2018-04-06
上海禾澜纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the complexity and many processes of the commonly used carbon coating methods, it is not conducive to wide application

Method used

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  • Preparation method of carbon-coated iron oxide nanotube and product and application of nanotube
  • Preparation method of carbon-coated iron oxide nanotube and product and application of nanotube
  • Preparation method of carbon-coated iron oxide nanotube and product and application of nanotube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Prepare ferric chloride, sodium sulfate, ammonium dihydrogen phosphate and sucrose into a solution at a certain concentration, wherein the concentration of iron salt is 0.08mol / L, and the concentration of sulfate is 8.0×10 -4 mol / L, the concentration of ammonium dihydrogen phosphate is 6.0×10 -4 mol / L, the added mass of sucrose is 1% of the iron salt, the magnetic stirring rate is 1000 rpm, and the stirring time is 0.5 hour;

[0024] The solution prepared above was transferred to a stainless steel reaction kettle, and carbon-coated iron oxide nanotubes were prepared by supercritical reaction for a certain period of time. The specific reaction temperature was 120 °C, the pressure was 40 MPa, and the time was 6 hours. After washing and drying, carbon-coated iron oxide nanotubes were obtained. coated iron oxide nanotubes. figure 1 SEM images of carbon-coated iron oxide nanotubes and

[0025] figure 2 TEM image of carbon-coated iron oxide nanotubes. Better control ov...

Embodiment 2

[0028] Prepare ferric nitrate, potassium sulfate, ammonium dihydrogen phosphate and sucrose into a solution at a certain concentration, in which the concentration of iron salt is 0.1mol / L, and the concentration of sulfate is 1.0×10 -3 mol / L, the concentration of ammonium dihydrogen phosphate is 1.0×10 -3 mol / L, the added quality of sucrose is 5% of the iron salt, the magnetic stirring speed is 800 rpm, and the stirring time is 5 hours;

[0029] The solution prepared above was transferred to a stainless steel reaction kettle, and carbon-coated iron oxide nanotubes were prepared by supercritical reaction for a certain period of time. The specific reaction temperature was 130°C, the pressure was 5 MPa, and the time was 5 hours. After washing and drying, carbon-coated iron oxide nanotubes were obtained. coated iron oxide nanotubes.

[0030] The prepared carbon-coated iron oxide nanotubes were uniformly mixed with solid paraffin at a mass fraction of 10:90, and pressed on a spec...

Embodiment 3

[0032] Prepare ferric chloride, potassium sulfate, ammonium dihydrogen phosphate and sucrose into a solution at a certain concentration, wherein the concentration of iron salt is 0.09mol / L, and the concentration of sulfate is 6.0×10 -4 mol / L, the concentration of ammonium dihydrogen phosphate is 8.0×10 -4 mol / L, the added quality of sucrose is 3% of the iron salt, the magnetic stirring speed is 100 rpm, and the stirring time is 4 hours;

[0033] The solution prepared above was transferred to a stainless steel reactor, and carbon-coated iron oxide nanotubes were prepared by supercritical reaction for a certain period of time. The specific reaction temperature was 150°C, the pressure was 30 MPa, and the time was 0.5 hours. After washing and drying, carbon-coated iron oxide nanotubes were obtained. coated iron oxide nanotubes.

[0034] The prepared carbon-coated iron oxide nanotubes were uniformly mixed with solid paraffin at a mass fraction of 10:90, and pressed on a special ...

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Abstract

The invention provides a preparation method of a carbon-coated iron oxide nanotube and a product and application of the nanotube. The preparation method comprises the following steps: preparing a solution from a soluble iron salt, a sulfate, ammonium dihydrogen phosphate and sucrose according to a certain concentration, and magnetically stirring the solution for a certain time; and transferring the solution into a stainless steel reaction still, regulating temperature and pressure, and performing reacting for a certain time by a supercritical method to obtain the carbon-coated iron oxide nanotube. The preparation method is simple, the technological process of a carbon coating process is shortened effectively, meanwhile, the reaction time is short, the temperature is low, and the course ofthe reaction is easy to control. The carbon-coated iron oxide nanotube is prepared by the method efficiently and rapidly, has a unique core-shell structure and peculiar electrical, magnetic, optical and mechanical properties, and thus is expected to be widely applied to the fields of catalysts, battery materials, electric wave shielding materials and the like.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to a preparation method of carbon-coated iron oxide nanotubes and its products and applications. Background technique [0002] Since the structure of carbon-coated nano-lanthanum carbide was first discovered in arc-evaporated graphite soot in 1993, carbon-coated nanomaterials have become one of the research hotspots of scientists worldwide because of their unique morphological structure and properties. A new functional composite material has broad application prospects in many fields. Due to the existence of the carbon shell, the influence of the environment on nanomaterials can be avoided, and the compatibility between certain materials and organisms is expected to be improved, so it has broad application prospects in medicine. [0003] At present, the main preparation methods of carbon-coated nanomaterials include arc discharge method, chemical vapor deposition method, pyrolys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/06C01B32/15H05K9/00B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01G49/06C01P2004/03C01P2004/04C01P2004/13C01P2004/80H05K9/009Y02P20/54
Inventor 何丹农章龙林琳金彩虹
Owner 上海禾澜纳米科技有限公司
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