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论文类型： 期刊论文

发表时间： 2021-07-21

发表刊物： MATERIALS RESEARCH EXPRESS

卷号： 5

期号： 2

ISSN号： 2053-1591

关键字： gaseous detonation (deflagration); carbon nanomaterials; carbon nanotubes; hydrogen proportion

摘要： Using ferrocene, H-2 and O-2, Carbon nanomaterials were prepared with gaseous detonation (deflagration) method. The effects of H-2 on the phase and morphology of carbon nanomaterials were studied by various proportions of H-2 in the reaction. The prepared samples were characterized by x-ray diffractometer, transmission electron microscope and Raman spectrometer. The results show that hydrogen proportion has a great influence on the phase and morphology of carbon nanomaterials. The high hydrogen proportion leads to much unreacted hydrogen, which could protect the iron atom from oxidation of carbon and dilute the reactants contributing to uniform particle size. In addition, the graphitization degree of multi-walled carbon nanotubes, observed in samples with high H-2 proportion, is high enough to see the lattice fringes, but the degree of graphitization of whole sample is lower than which fabricated with low H-2 proportion, and it may result from the low energy generation.