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Method for directly growing amorphous carbon nano tube on iron-based amorphous powder

An iron-based amorphous and amorphous carbon technology, applied in the directions of carbon nanotubes, nanocarbons, nanotechnology, etc., to achieve the effects of uniform product structure, good structure and simple preparation process

Inactive Publication Date: 2013-07-24
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the preparation of amorphous carbon nanotube structure on the iron-based amorphous alloy substrate.

Method used

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  • Method for directly growing amorphous carbon nano tube on iron-based amorphous powder
  • Method for directly growing amorphous carbon nano tube on iron-based amorphous powder
  • Method for directly growing amorphous carbon nano tube on iron-based amorphous powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Weigh 0.50 g of iron-based amorphous powder and spread it evenly on the bottom of the ark. Place the ark in the central constant temperature zone of the quartz tube of the tube furnace, and seal the quartz tube. Introduce argon gas at a ventilation rate of 200mL / min for 1 h to completely discharge the air in the quartz tube, and start heating after the ventilation is completed. First, the quartz tube was heated to 500 °C at a heating rate of 10 °C / min under a protective atmosphere with an argon flow rate of 200 mL / min. Immediately after reaching 500°C, acetylene was introduced as carbon source gas and argon as carrier gas for reaction. The flow rate of acetylene was 60mL / min, the flow rate of argon gas was 100mL / min, and the reaction was performed at constant temperature for 1h. After the reaction is over, turn off the carbon source gas, adjust the argon gas flow to 200mL / min, cool down to 450°C at a rate of 5°C / min in an atmosphere protected by argon, and then cool wi...

Embodiment 2

[0015] Weigh 0.50 g of iron-based amorphous powder and spread it evenly on the bottom of the ark. Place the ark in the central constant temperature zone of the quartz tube of the tube furnace, and seal the quartz tube. Pass argon gas at a ventilation rate of 400mL / min for 30min, and then pass argon gas at a ventilation rate of 200mL / min for 30min to completely discharge the air in the quartz tube, and start heating after the ventilation is completed. First, the quartz tube was heated to 500 °C at a heating rate of 10 °C / min under a protective atmosphere with an argon flow rate of 200 mL / min. Immediately after reaching 500°C, acetylene was introduced as carbon source gas and argon as carrier gas for reaction. The flow rate of acetylene was 60mL / min, the flow rate of argon gas was 100mL / min, and the reaction was performed at constant temperature for 1h. After the reaction is over, turn off the carbon source gas, adjust the argon gas flow to 200mL / min, cool down to 450°C at a ra...

Embodiment 3

[0017] Weigh 0.50 g of iron-based amorphous powder and spread it evenly on the bottom of the ark. Place the ark in the central constant temperature zone of the quartz tube of the tube furnace, and seal the quartz tube. Pass argon gas at a ventilation rate of 400mL / min for 30min, and then pass argon gas at a ventilation rate of 200mL / min for 30min to completely discharge the air in the quartz tube, and start heating after the ventilation is completed. First, the quartz tube was heated to 550 °C at a heating rate of 10 °C / min under a protective atmosphere with an argon flow rate of 200 mL / min. Immediately after reaching 550°C, acetylene was introduced as carbon source gas and argon as carrier gas for reaction. The flow rate of acetylene was 60mL / min, the flow rate of argon gas was 100mL / min, and the reaction was performed at constant temperature for 1h. After the reaction is over, turn off the carbon source gas, adjust the argon gas flow to 200mL / min, cool down to 450°C at a ra...

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Abstract

The invention discloses a method for directly growing an amorphous carbon nano tube on iron-based amorphous powder, and belongs to a nano material preparation technology. The method comprises the following processes of: spreading the Fe76Si9B10P5 iron-based amorphous powder in an ark, putting the ark in a central constant temperature area of a tubular furnace, introducing argon to completely discharge the air, heating to the reaction temperature, introducing a mixed gas of a carbon source gas and a carrier gas, reacting for a certain time, performing furnace cooling after the reaction, and thus obtaining the carbon nano tube uniformly grown on the iron-based amorphous powder. The method has the advantages that: the amorphous carbon nano tube is directly obtained on the iron-based amorphous powder matrix without any pretreatment or extreme conditions, the preparation processes are simple, and a fussy preparation process for a catalyst precursor or an extreme reaction condition is not required. The obtained product is uniform in structure and easy to purify, and a large amount of amorphous carbon nano tube structure with high purity and good structure can be obtained.

Description

technical field [0001] The invention relates to a method for directly growing amorphous carbon nanotubes on iron-based amorphous powder, belonging to nanometer material preparation technology. Background technique [0002] As a carbon material, carbon nanotubes have attracted extensive attention from the scientific community since their discovery due to their excellent mechanical, electrical and thermal properties. The wall of amorphous carbon nanotubes is composed of many carbon clusters, and exhibits the characteristics of short-range order and long-range disorder, so it has better properties than crystalline carbon nanotubes in some aspects, and can be used as an efficient gas Absorbents or catalyst supports, nanoelectronic components or sensing devices, negative electrode materials for lithium-ion batteries, etc. In addition, the properties of crystalline carbon tubes depend on their radius and chirality, and it is difficult to precisely control them, while amorphous ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/02B82Y40/00C01B32/16
Inventor 赵乃勤陈龙何春年师春生刘恩佐李家俊
Owner TIANJIN UNIV