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The DOI matches its Crossref record; 14 of the 14 references it cites were found in a registry or an index.

Elemental Anisotropic Growth and Atomic-Scale Structure of Shape-Controlled Octahedral Pt–Ni–Co Alloy Nanocatalysts

Arán-Ais, Rosa M., Dionigi, Fabio, Merzdorf, Thomas, Gocyla, Martin, Heggen, Marc, Dunin-Borkowski, Rafal E., Gliech, Manuel, Solla-Gullón, José, Herrero, Enrique, Feliu, Juan M., Strasser, Peter·2015·Nano Letters

Abstract

Multimetallic shape-controlled nanoparticles offer great opportunities to tune the activity, selectivity, and stability of electrocatalytic surface reactions. However, in many cases, our synthetic control over particle size, composition, and shape is limited requiring trial and error. Deeper atomic-scale insight in the particle formation process would enable more rational syntheses. Here we exemplify this using a family of trimetallic PtNiCo nanooctahedra obtained via a low-temperature, surfactant-free solvothermal synthesis. We analyze the competition between Ni and Co precursors under coreduction "one-step" conditions when the Ni reduction rates prevailed. To tune the Co reduction rate and final content, we develop a "two-step" route and track the evolution of the composition and morphology of the particles at the atomic scale. To achieve this, scanning transmission electron microscopy and energy dispersive X-ray elemental mapping techniques are used. We provide evidence of a heterogeneous element distribution caused by element-specific anisotropic growth and create octahedral nanoparticles with tailored atomic composition like Pt1.5M, PtM, and PtM1.5 (M = Ni + Co). These trimetallic electrocatalysts have been tested toward the oxygen reduction reaction (ORR), showing a greatly enhanced mass activity related to commercial Pt/C and less activity loss than binary PtNi and PtCo after 4000 potential cycles.

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Crossref · 10.1021/acs.nanolett.5b03057

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Metadata

Authors
Arán-Ais, R. M., Dionigi, F., Merzdorf, T., Gocyla, M., Heggen, M., Dunin-Borkowski, R. E., Gliech, M., Solla-Gullón, J., Herrero, E., Feliu, J. M., & Strasser, P.
Venue
Nano Letters
Published
2015-10-15
Volume
15
Issue
11
Pages
7473-7480
ISSN
  • 1530-6984 (ISSN-L)
  • 1530-6992
OpenAlex
W2293090510
Cited by
174
References
14
FWCI
6.75
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Elemental Anisotropic Growth and Atomic-Scale Structure of Shape-Controlled Octahedral Pt–Ni–Co Alloy Nanocatalysts. https://app.cochat.ai/papers/10.1021/acs.nanolett.5b03057
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Arán-Ais, R. M., Dionigi, F., Merzdorf, T., Gocyla, M., Heggen, M., Dunin-Borkowski, R. E., Gliech, M., Solla-Gullón, J., Herrero, E., Feliu, J. M., & Strasser, P. (2015). Elemental Anisotropic Growth and Atomic-Scale Structure of Shape-Controlled Octahedral Pt–Ni–Co Alloy Nanocatalysts. Nano Letters. https://doi.org/10.1021/acs.nanolett.5b03057

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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