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Gas phase synthesis of fcc-cobalt nanoparticles
Abstract
Air stable cobalt nanoparticles have been prepared continuously at a production rate of 30 g h−1 by a modified flame synthesis method under highly reducing conditions. Nanoparticles of 20–60 nm in diameter consisted of metallic face-centered-cubic cobalt. The metal particles were protected against oxidation by a surface layer of less than 1 nm of cobalt oxide. The material was highly magnetic exhibiting a high saturation magnetisation (>124 emu g−1) together with a low (<100 Oe) coercivity. Experiments under varying fuel to oxygen ratio were combined with thermodynamic calculations to illustrate the necessity for highly reducing conditions and enhanced gas mixing to enable the formation of metallic cobalt nanoparticles in flames.
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Citations
Cited by
Flame aerosol synthesis of smart nanostructured materials
Strobel, R., & Pratsinis, S. E. (2007) · Journal of Materials Chemistry · doi:10.1039/b711652g · Cited by 594
Hermán, V., Takacs, H., Duclairoir, F., Renault, O., Tortai, J. H., & Viala, B. (2015) · RSC Advances · doi:10.1039/c5ra06847a · Cited by 99
Schwenke, A., Wagener, P., Nolte, S., & Barcikowski, S. (2011) · Applied Physics A · doi:10.1007/s00339-011-6398-9 · Cited by 83
Swiatkowska-Warkocka, Z., Koga, K., Kawaguchi, K., Wang, H., Pyatenko, A., & Koshizaki, N. (2013) · RSC Adv. · doi:10.1039/c2ra22119e · Cited by 68
Metadata
- Authors
- Grass, R. N., & Stark, W. J.
- Venue
- Journal of Materials Chemistry
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2006
- Volume
- 16
- Issue
- 19
- Pages
- 1825
- ISSN
- 0959-9428 (ISSN-L)
- 1364-5501
- OpenAlex
- W2125694637
- Cited by
- 174
- References
- 0
- FWCI
- 6.94
- Type
- journal article
- Language
- en
- Open access
- closed
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- Grass, R. N., & Stark, W. J. (2006). Gas phase synthesis of fcc-cobalt nanoparticles. Journal of Materials Chemistry. https://doi.org/10.1039/b601013j
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