Tuning the activities of cuprous oxide nanostructures via the oxide-metal interaction.

Abstract:

:Despite tremendous importance in catalysis, the design of oxide-metal interface has been hampered by the limited understanding of the nature of interfacial sites and the oxide-metal interaction (OMI). Through construction of well-defined Cu2O/Pt, Cu2O/Ag and Cu2O/Au interfaces, we find that Cu2O nanostructures (NSs) on Pt exhibit much lower thermal stability than on Ag and Au, although they show the same structure. The activities of these interfaces are compared for CO oxidation and follow the order of Cu2O/Pt > Cu2O/Au > Cu2O/Ag. OMI is found to determine the activity and stability of supported Cu2O NSs, which could be described by the formation energy of interfacial oxygen vacancy. Further, electronic interaction between Cu+ and metal substrates is found center to OMI, where the d band center could be used as a key descriptor. Our study provides insight for OMI and for the development of Cu-based catalysts for low temperature oxidation reactions.

journal_name

Nat Commun

journal_title

Nature communications

authors

Huang W,Liu Q,Zhou Z,Li Y,Ling Y,Wang Y,Tu Y,Wang B,Zhou X,Deng D,Yang B,Yang Y,Liu Z,Bao X,Yang F

doi

10.1038/s41467-020-15965-8

subject

Has Abstract

pub_date

2020-05-08 00:00:00

pages

2312

issue

1

issn

2041-1723

pii

10.1038/s41467-020-15965-8

journal_volume

11

pub_type

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