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Title: Carbon encapsulated nickel nanoparticles synthesized by a modified alcohol catalytic chemical vapor deposition method
Authors: P. Singjai
K. Wongwigkarn
Y. Laosiritaworn
R. Yimnirun
S. Maensiri
Keywords: Materials Science
Physics and Astronomy
Issue Date: 1-Sep-2007
Abstract: In this work, a simple and cost-efficient method was demonstrated for the production of carbon encapsulated nickel nanoparticles (CENPs). The CENPs were synthesized from nickel oxide by a modified alcohol catalytic chemical vapor deposition method at atmospheric pressure. Structural characterizations using scanning electron microscopy, transmission electron microscopy and X-ray diffraction indicated that the Ni-core mean diameter and the graphite-layer mean thickness were 98 ± 31 nm and 65 ± 35 nm, respectively. Room temperature magnetization results showed a ferromagnetic behavior of the CENPs, in which the saturation magnetization decreased with decreasing the Ni-to-C ratio whereas the coercivity increased with decreasing the Ni-core diameter. © 2007 Elsevier B.V. All rights reserved.
ISSN: 15671739
Appears in Collections:CMUL: Journal Articles

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