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A facile approach for synthesis and in situ modification of onion‐like carbon with molybdenum carbide
Author(s) -
Du Jianping,
Zhao Ruihua,
Zhu Zhenping
Publication year - 2011
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201026646
Subject(s) - molybdenum , raman spectroscopy , materials science , carbide , carbon fibers , transmission electron microscopy , chemical engineering , nanocomposite , chemical vapor deposition , detonation , spectroscopy , molybdenum disulfide , scanning electron microscope , energy dispersive x ray spectroscopy , nanotechnology , composite material , metallurgy , chemistry , organic chemistry , composite number , optics , physics , engineering , quantum mechanics , explosive material
Uniform small onion‐like carbon (OLC) modified with molybdenum carbide has been synthesized by a one‐step process, using detonation‐assisted chemical vapor deposition. The obtained material was characterized by transmission electron microscope, energy‐dispersive X‐ray spectroscopy, Raman spectroscopy, and X‐ray diffraction. The results show that the OLC have almost perfect onion structures containing about 7–10 closed shells and exhibit a narrow distribution of 4–6 nm when the C/Mo ratio is about 150. The hexagonal molybdenum carbide (Mo 2 C) is dispersed on the surface of OLC. The size of OLC can be controlled by adjusting the C/Mo ratios. The formation mechanism of the nanocomposites of OLC and Mo 2 C is briefly discussed.