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From the same journal

Imaging nanostructural modifications induced by electronic metal-support interaction effects at Au||cerium-based oxide nanointerfaces

Research output: Contribution to journalArticlepeer-review

Published copy (DOI)

Author(s)

  • Miguel Lopez-Haro
  • Jose M. Cies
  • Susana Trasobares
  • Jose A. Perez-Omil
  • Juan J. Delgado
  • Serafin Bernal
  • Pascale Bayle-Guillemaud
  • Odile Stephan
  • Kenta Yoshida
  • Edward D. Boyes
  • Pratibha L. Gai
  • Jose J. Calvino

Department/unit(s)

Publication details

JournalACS Nano
DatePublished - 28 Aug 2012
Issue number8
Volume6
Number of pages9
Pages (from-to)6812-6820
Original languageEnglish

Abstract

A variety of advanced (scanning) transmission electron microscopy experiments, carried out in aberration-corrected equipment, provide direct evidence about subtle structural changes taking place at nanometer-sized Au||ceria oxide interfaces, which agrees with the occurrence of charge transfer effects between the reduced support and supported gold nanoparticles suggested by macroscopic techniques. Tighter binding of the gold nanoparticles onto the ceria oxide support when this is reduced is revealed by the structural analysis. This structural modification is accompanied by parallel deactivation of the CO chemisorption capacity of the gold nanoparticles, which is interpreted in exact quantitative terms as due to deactivation of the gold atoms at the perimeter of the Au||cerium oxide interface. © 2012 American Chemical Society.

    Research areas

  • nanointerfaces, CE0.62ZR0.38O2 MIXED-OXIDE, HYDROGEN-PRODUCTION, ceria, FUEL-CELL APPLICATIONS, AU/CERIA-ZIRCONIA, CO ADSORPTION, RESOLUTION, ZIRCONIA CATALYSTS, STEM, GOLD CATALYSTS, electronic metal-support interaction effects, MICROSCOPY, OXIDATION, gold catalysts

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