Tunability of the Adsorbate Binding on Bimetallic Alloy Nanoparticles for the Optimization of Catalytic Hydrogenation.
J Am Chem Soc
; 139(15): 5538-5546, 2017 04 19.
Article
em En
| MEDLINE
| ID: mdl-28387511
ABSTRACT
In this paper, we show that PtAu and PdAu random alloy dendrimer-encapsulated nanoparticles with an average size of â¼1.6 nm have different catalytic activity trends for allyl alcohol hydrogenation. Specifically, PtAu nanoparticles exhibit a linear increase in activity with increasing Pt content, whereas PdAu dendrimer-encapsulated nanoparticles show a maximum activity at a Pd content of â¼60%. Both experimental and theoretical results suggest that this contrasting behavior is caused by differences in the strength of H binding on the PtAu and PdAu alloy surfaces. The results have significant implications for predicting the catalytic performance of bimetallic nanoparticles on the basis of density functional theory calculations.
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MEDLINE
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En
Ano de publicação:
2017
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Article