Growth Trajectories and Coarsening Mechanisms of Metal Nanoparticle Electrocatalysts | Zendy

Yu Chengfei | Zendy; Holby Edward F. | Zendy; Yang Ruizhi | Zendy; Toney Michael F. | Zendy; Morgan Dane | Zendy; Strasser Peter | Zendy

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Growth Trajectories and Coarsening Mechanisms of Metal Nanoparticle Electrocatalysts

Author(s) -

Yu Chengfei,

Holby Edward F.,

Yang Ruizhi,

Toney Michael F.,

Morgan Dane,

Strasser Peter

Publication year - 2012

Publication title -

chemcatchem

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.497

H-Index - 106

eISSN - 1867-3899

pISSN - 1867-3880

DOI - 10.1002/cctc.201200090

Subject(s) - small angle x ray scattering , materials science , nanoparticle , ostwald ripening , chemical physics , particle size , yield (engineering) , nanotechnology , scattering , electrochemistry , metal , chemical engineering , particle (ecology) , carbon fibers , chemistry , electrode , metallurgy , optics , composite material , oceanography , engineering , geology , physics , composite number

Keeping an eye on electrocatalysts: In situ small angle X‐ray scattering (SAXS) combined with an electrochemical rate model yield insight in the evolution of the particle size distributions (PSDs) of carbon‐supported Pt nanoparticle ensembles. A critical 3–5 nm size region where particles remained structurally stable was identified. A dominant role for a surface energy‐driven Ostwald growth mechanism was deduced.

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