The Synergy between Metal Facet and Oxide Support Facet for Enhanced Catalytic Performance: The Case of Pd-TiO2

Muhan Cao, Zeyuan Tang, Qipeng Liu, Yong Xu, Min Chen, Haiping Lin*, Youyong Li, Elad Gross, Qiao Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

65 Scopus citations

Abstract

The demand for catalyst with higher activity and higher selectivity is still a central issue in current material science community. On the basis of first-principles calculations, we demonstrate that the catalytic performance of the Pd-TiO2 hybrid nanostructures can be selectively promoted or depressed by choosing the suitable shaped Pd and TiO2 nanocrystals. To be more specific, the catalytic activities of Pd nanoparticles enclosed by (100) or (111) facets can be promoted more significantly when dosed on the TiO2(001) than on TiO2(101) under irradiation. Such theoretical prediction has then been further verified by the experimental observations in which the Pd(100)-TiO2(001) composites exhibit the highest catalytic performance toward the activation of oxygen among all the other shaped hybrid nanostructures. As a result, the selection of facets of support materials can provide an extra tuning parameter to control the catalytic activities of metal nanoparticles. This research opened up a new direction for designing and preparing catalysts with enhanced catalytic performance.

Original languageAmerican English
Pages (from-to)5298-5302
Number of pages5
JournalNano Letters
Volume16
Issue number8
DOIs
StatePublished - 10 Aug 2016

Bibliographical note

Publisher Copyright:
© 2016 American Chemical Society.

Keywords

  • O activation
  • Palladium
  • interaction
  • synergy
  • titania

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