Decoration of Carbon Nanotubes with CoO and Co Nanoparticles
Joint Authors
Niarchos, D.
Hariharan, S.
Boukos, N.
Panagiotopoulos, I.
Pal, S.
Tzitzios, V.
Tsitrouli, D.
Fardis, M.
Belesi, M.
Papavassiliou, G.
Source
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-04-04
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Engineering Sciences and Information Technology
Chemistry
Civil Engineering
Abstract EN
Multiwall carbon nanotubes (MWNTs) decorated with CoO nanocrystals were synthesized by in-situ thermal decomposition of Co(acac)2 in oleyl amine under reflux conditions open in the air.
The CoO/MWNTs composite material can be easily converted to metallic Co/MWNTs through annealing under reducing atmosphere (4% H2) at 500°C without any significant sintering effect.
The composite materials characterized by X-ray diffraction, transmission electron microscopy, and Nuclear Magnetic Resonance (NMR) spectroscopy.
The structural and morphological characterization shows that the CoO has cubic face (fcc) and the particles deposited uniformly on the external surface of the carbon nanotubes.
In the annealed materials, the NMR shows that the fcc and hcp metallic Co phases coexist with a significant percentage of stacking faults.
The magnetic measurements indicated that the CoO/MWNTs composite is largely composed of CoO nanoparticles with uncompensated surface spins.
The fluctuations of spins persist in partially reduced CoO grains as shown by nuclear spin-lattice relaxation measurements.
American Psychological Association (APA)
Belesi, M.& Panagiotopoulos, I.& Pal, S.& Hariharan, S.& Tsitrouli, D.& Papavassiliou, G.…[et al.]. 2011. Decoration of Carbon Nanotubes with CoO and Co Nanoparticles. Journal of Nanomaterials،Vol. 2011, no. 2011, pp.1-9.
https://search.emarefa.net/detail/BIM-463269
Modern Language Association (MLA)
Belesi, M.…[et al.]. Decoration of Carbon Nanotubes with CoO and Co Nanoparticles. Journal of Nanomaterials No. 2011 (2011), pp.1-9.
https://search.emarefa.net/detail/BIM-463269
American Medical Association (AMA)
Belesi, M.& Panagiotopoulos, I.& Pal, S.& Hariharan, S.& Tsitrouli, D.& Papavassiliou, G.…[et al.]. Decoration of Carbon Nanotubes with CoO and Co Nanoparticles. Journal of Nanomaterials. 2011. Vol. 2011, no. 2011, pp.1-9.
https://search.emarefa.net/detail/BIM-463269
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-463269
