Method for preparing gamma-Fe2O3 nanometer wire filling carbon nitrogen multi-wall nanometer tubes through one-step reaction

A technology of multi-walled nanotubes and nanowires, applied in nanotechnology, nanotechnology, nanostructure manufacturing, etc., can solve the problems of large diameter distribution of carbon-based nanotubes, difficulty in obtaining filling effect and yield, etc.

Inactive Publication Date: 2010-11-10
JILIN UNIV
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Problems solved by technology

Therefore, the obtained carbon-based nanotubes have a large diameter distribution and a wide distribution of product types, often accompanied by a large amount of amorphous carbon and carbon-coated particles. Due to this limitation, it is difficult to obtain a satisfactory filling effect and Yield

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  • Method for preparing gamma-Fe2O3 nanometer wire filling carbon nitrogen multi-wall nanometer tubes through one-step reaction
  • Method for preparing gamma-Fe2O3 nanometer wire filling carbon nitrogen multi-wall nanometer tubes through one-step reaction
  • Method for preparing gamma-Fe2O3 nanometer wire filling carbon nitrogen multi-wall nanometer tubes through one-step reaction

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Embodiment

[0042] Preparation of γ-Fe 2 o 3 The experimental conditions and parameters of carbon nitrogen nanotubes are as follows:

[0043] 1) deposition thickness is 8~10nm thick FeNi (Fe50%Ni50%, mass fraction) catalyst thin film on substrate: select Si (111) for use as substrate, by target magnetron sputtering PVD equipment (chosen in the present invention The JGP450A multi-target magnetron sputtering PVD equipment) was used for physical vapor deposition of catalyst thin films. The specific parameters are as follows: the sputtering current of the Ti target is 0.2A, the sputtering voltage is 230V, the sputtering gas is argon, the flow rate is 30sccm, the gas pressure is 0.6Pa, the substrate bias voltage-100V, and the deposition time is 220s; FeNi ( Fe50%, Ni50%, mass fraction) the excitation current of the alloy target is 2.2A, the excitation voltage is 17.5V, the sputtering current is 0.4A, the sputtering voltage is 300V, the sputtering gas is argon, the flow rate is 80sccm, and th...

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Abstract

The invention relates to a method for preparing gamma-Fe2O3 nanometer wire filling carbon nitrogen multi-wall nanometer tubes through one-step reaction. Particularly, the invention belongs to a method for preparing metal oxide nanometer wire filling carbon nitrogen nanometer tubes under the condition of the existence of FeNi (50 percent of Fe and 50 percent of Ni in mass percent) catalyst thin films in the plasma body chemical gas phase deposition process of paraffin gas (preferably methane), air and hydrogen (according to a flow rate ratio of 80/10/20 with the unit of ml/minute in a standard state). The products prepared by the invention have good orientation effect and high yield. The single crystal nanometer wires filled to the inside have ferrimagnetism, and the multi-wall tubular structures at the outer layer have the special nitrogen doped bamboo joint type structures. The invention has the advantages of simple method, one-step completion, easy control and convenient industrial production. The prepared magnetic nanometer materials have wide application prospects in the fields of biological medicine, field generation devices, catalytic materials and the like.

Description

Technical field: [0001] The present invention relates to a kind of one-step reaction preparation gamma-Fe 2 o 3 A method for filling carbon-nitrogen multi-walled nanotubes with nanowires, specifically, the present invention is a method for preparing nanowire-filled carbon-nitrogen nanotubes by using a plasma chemical vapor deposition process of carbon source gas, air and hydrogen. Background technique: [0002] Since the carbon nanotube filling phenomenon was first reported in 1993, a large number of theoretical calculations and experimental studies have shown that in the quantum cavity of carbon nanotubes, not only the morphology, structure and physical and chemical properties of the filling material itself have changed compared with their macroscopic states. , and to a certain extent also had a great impact on the properties of carbon nanotubes. These have aroused researchers' close attention and strong interest, making the research on carbon nanotube filling and its app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02C01G49/06B82B3/00
Inventor 王欣郑伟涛王雅玉张馨木
Owner JILIN UNIV
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