Facile synthesis and characterization of FeCoNiPt alloy nanoparticle electrocatalysts with different Pt content
O. V. Alexeeva,
O. K. Karyagina,
S. S. Kozlov,
L. I. Kuznetsov,
L. L. Larina,
A. B. Nikolskaya,
O. I. Shevaleevskiy https://doi.org/10.17586/2220-8054-2025-16-6-919-924
Abstract
In this work, we present a facile synthesis of FeCoNiPt alloy nanoparticles (NPs) with tunable platinum content (10–30 at.%). The NPs were produced by medium-assisted solid-state reaction using acetylacetonate metal precursors. The structural characterization (TEM, HRTEM, STEM-EDS, and XRD) reveals that the obtained FeCoNiPt NPs exhibit a uniform morphology with an average diameter of 3–7 nm and crystallize in a single-phase face-centered cubic solid solution. Increasing the Pt content leads to lattice expansion and a systematic increase in crystallite size, consistent with the larger atomic radius of Pt. STEM-EDS elemental maps confirm homogeneous incorporation of Fe, Co, Ni, and Pt across individual nanoparticles, demonstrating the successful formation of a multicomponent alloy. This study demonstrates that tuning Pt content in FeCoNiPt multicomponent alloys enables precise modulation of d-band electronic structure. The proposed synthesis approach is simple, cost-effective, and scalable, offering a promising pathway for designing Pt-optimized electrocatalysts.
Supporting agencies: The work was carried out within the state assignment of the Ministry of Science and Higher Education of the Russian Federation (theme No. 125020401357-4).
About the Authors
O. V. Alexeeva
N. M. Emanuel Institute of Biochemical Physics RAS, Solar Photovoltaic Laboratory
Russian Federation
Russian Federation
Olga V. Alexeeva
Moscow
O. K. Karyagina
N. M. Emanuel Institute of Biochemical Physics RAS, Solar Photovoltaic Laboratory
Russian Federation
Russian Federation
Olga K. Karyagina
Moscow
S. S. Kozlov
N. M. Emanuel Institute of Biochemical Physics RAS, Solar Photovoltaic Laboratory
Russian Federation
Russian Federation
Sergei S. Kozlov
Moscow
L. I. Kuznetsov
N. M. Emanuel Institute of Biochemical Physics RAS, Solar Photovoltaic Laboratory
Russian Federation
Russian Federation
Leontiy I. Kuznetsov
Moscow
L. L. Larina
N. M. Emanuel Institute of Biochemical Physics RAS, Solar Photovoltaic Laboratory
Russian Federation
Russian Federation
Liudmila L. Larina
Moscow
A. B. Nikolskaya
N. M. Emanuel Institute of Biochemical Physics RAS, Solar Photovoltaic Laboratory
Russian Federation
Russian Federation
Anna B. Nikolskaya
Moscow
O. I. Shevaleevskiy
N. M. Emanuel Institute of Biochemical Physics RAS, Solar Photovoltaic Laboratory
Russian Federation
Russian Federation
Oleg I. Shevaleevskiy
Moscow
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Review
For citations:
Alexeeva O.V., Karyagina O.K., Kozlov S.S., Kuznetsov L.I., Larina L.L., Nikolskaya A.B., Shevaleevskiy O.I. Facile synthesis and characterization of FeCoNiPt alloy nanoparticle electrocatalysts with different Pt content. Nanosystems: Physics, Chemistry, Mathematics. 2025;16(6):919-924. https://doi.org/10.17586/2220-8054-2025-16-6-919-924
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