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

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 standardstate). 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...

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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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