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- Title
Tuning the activities of cuprous oxide nanostructures via the oxide-metal interaction.
- Authors
Huang, Wugen; Liu, Qingfei; Zhou, Zhiwen; Li, Yangsheng; Ling, Yunjian; Wang, Yong; Tu, Yunchuan; Wang, Beibei; Zhou, Xiaohong; Deng, Dehui; Yang, Bo; Yang, Yong; Liu, Zhi; Bao, Xinhe; Yang, Fan
- 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. The design of oxide-metal interface for heterogeneous catalysis has been hampered by the limited fundamental understanding. Here, the authors demonstrate that the activities of cuprous oxide nanostructures for CO oxidation can be tuned via the oxide-metal (Cu2O/M, M = Pt, Ag, Au) interaction.
- Subjects
CUPROUS oxide; NANOSTRUCTURES; HETEROGENEOUS catalysis; THERMAL stability; LOW temperatures; CATALYSIS; SILVER sulfide; WATER gas shift reactions
- Publication
Nature Communications, 2020, Vol 11, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-020-15965-8