Synergistic growth of nickel and platinum nanoparticles via exsolution and surface reaction
Date
13/05/2024Author
Grant ID
EP/R023522/1
EP/R023522/1
ep/l017008/1
Keywords
Metadata
Show full item recordAbstract
Bimetallic catalysts combining precious and earth-abundant metals in well designed nanoparticle architectures can enable cost efficient and stable heterogeneous catalysis. Here, we present an interaction-driven in-situ approach to engineer finely dispersed Ni decorated Pt nanoparticles (1-6 nm) on perovskite nanofibres via reduction at high temperatures (600-800oC). Deposition of Pt (0.5 wt%) enhances the reducibility of the perovskite support and promotes the nucleation of Ni cations via metal-support interaction, thereafter the Ni species react with Pt forming alloy nanoparticles, with the combined processes yielding smaller nanoparticles that either of the contributing processes. Tuneable uniform Pt-Ni nanoparticles are produced on the perovskite surface, yielding reactivity and stability surpassing 1 wt.% Pt/γ-Al2O3 catalysts for CO oxidation. This approach heralds the possibility of in-situ fabrication of supported bimetallic nanoparticles with engineered compositional distributions and performance.
Citation
Xu , M , Jeon , Y , Naden , A B , Kim , H , Kerherve , G , Payne , D J , Shul , Y & Irvine , J T S 2024 , ' Synergistic growth of nickel and platinum nanoparticles via exsolution and surface reaction ' , Nature Communications , vol. 15 . https://doi.org/10.1038/S41467-024-48455-2
Publication
Nature Communications
Status
Peer reviewed
ISSN
2041-1723Type
Journal article
Description
Funding; EPSRC for a Critical Mass project EP/R023522/1 and Electron Microscopy provision EP/R023751/1, EP/L017008/1.Collections
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