Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 114, Issue 44, Pages 18779-18784Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp105640j
Keywords
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Funding
- CSIR
- DST, Government of India
- Department of Science and Technology, Government of India
- NSF MRSEC [DMR 0520471]
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Microemulsion-based synthesis of Fe-Co alloy nanoparticles has been reported for the first time. Spherical, uniform, and highly monodisperse nanoparticles of Fe75Co25, Fe67Co33, Fe50Co50, and Fe33Co67 with an average size of 20, 25, 10, and 40 nm, respectively, were synthesized. These nanoparticles crystallize in a body-centered cubic cell. A higher cobalt content led to the formation of biphasic mixtures. Energy-dispersive X-ray spectroscopy studies confirmed the Fe/Co ratios. Nanoparticles of the Fe33Co67 alloy show higher hydrogen and oxygen evolution efficiencies (over 100 times) compared with other Fe-Co alloys of nanocrystalline or bulk form. The Fe-Co alloy nanoparticles also show ferromagnetism.
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