Binary Fe-Co alloy nanoparticles showing significant enhancement in electrocatalytic activity compared with bulk alloys

Jahangeer Ahmed; Bharat Kumar; Amos M. Mugweru; Phong Trinh; Kandalam V. Ramanujachary; Samuel E. Lofland; Govind; Ashok K. Ganguli

doi:10.1021/jp105640j

Binary Fe-Co alloy nanoparticles showing significant enhancement in electrocatalytic activity compared with bulk alloys

Jahangeer Ahmed, Bharat Kumar, Amos M. Mugweru, Phong Trinh, Kandalam V. Ramanujachary, Samuel E. Lofland, Govind, Ashok K. Ganguli

Research output: Contribution to journal › Article › peer-review

63 Scopus citations

Abstract

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 Fe₃₃Co ₆₇ 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.

Original language	English (US)
Pages (from-to)	18779-18784
Number of pages	6
Journal	Journal of Physical Chemistry C
Volume	114
Issue number	44
DOIs	https://doi.org/10.1021/jp105640j
State	Published - Nov 11 2010

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Energy(all)
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

Access to Document

10.1021/jp105640j

Cite this

@article{3bc614a5390e4bbfa39f8718528e1ee0,

title = "Binary Fe-Co alloy nanoparticles showing significant enhancement in electrocatalytic activity compared with bulk alloys",

abstract = "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 Fe33Co 67 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.",

author = "Jahangeer Ahmed and Bharat Kumar and Mugweru, {Amos M.} and Phong Trinh and Ramanujachary, {Kandalam V.} and Lofland, {Samuel E.} and Govind and Ganguli, {Ashok K.}",

year = "2010",

month = nov,

day = "11",

doi = "10.1021/jp105640j",

language = "English (US)",

volume = "114",

pages = "18779--18784",

journal = "Journal of Physical Chemistry C",

issn = "1932-7447",

publisher = "American Chemical Society",

number = "44",

}

TY - JOUR

T1 - Binary Fe-Co alloy nanoparticles showing significant enhancement in electrocatalytic activity compared with bulk alloys

AU - Ahmed, Jahangeer

AU - Kumar, Bharat

AU - Mugweru, Amos M.

AU - Trinh, Phong

AU - Ramanujachary, Kandalam V.

AU - Lofland, Samuel E.

AU - Govind,

AU - Ganguli, Ashok K.

PY - 2010/11/11

Y1 - 2010/11/11

N2 - 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 Fe33Co 67 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.

AB - 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 Fe33Co 67 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.

UR - http://www.scopus.com/inward/record.url?scp=78149250225&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=78149250225&partnerID=8YFLogxK

U2 - 10.1021/jp105640j

DO - 10.1021/jp105640j

M3 - Article

AN - SCOPUS:78149250225

VL - 114

SP - 18779

EP - 18784

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

SN - 1932-7447

IS - 44

ER -

Binary Fe-Co alloy nanoparticles showing significant enhancement in electrocatalytic activity compared with bulk alloys

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this