Jump to main content
Jump to site search

Issue 2, 2014
Previous Article Next Article

Structure and special chemical reactivity of interface-stabilized cerium oxide nanolayers on TiO2(110)

Author affiliations

Abstract

Novel interface-stabilized ceria nanophases have been grown on TiO2(110) by physical vapor deposition. At low coverage, dumbbell nanostructures constituted by reconstructed titania and ceria clusters are formed, while long range ordered nanoxides can be obtained by increasing the ceria dose. Scanning tunneling microscopy and photoemission spectroscopy were used to characterize the electronic properties of the films, showing that the TiO2 substrate can effectively stabilize ceria in reduced form over a wide range of experimental conditions. Epitaxial coupling is a very useful tool for tuning the chemical properties of mixed oxide systems. The special electronic properties of the films have a direct counterpart in the chemical activity, which has been investigated by temperature programmed desorption using methanol as a probe molecule. The experimental results indicate an exceptional activity of the ceria–titania interface in the selective dehydration of methanol to formaldehyde at an unprecedented low temperature (330 K).

Graphical abstract: Structure and special chemical reactivity of interface-stabilized cerium oxide nanolayers on TiO2(110)

Back to tab navigation

Supplementary files

Publication details

The article was received on 30 Aug 2013, accepted on 16 Oct 2013 and first published on 17 Oct 2013


Article type: Paper
DOI: 10.1039/C3NR04623K
Citation: Nanoscale, 2014,6, 800-810
  •   Request permissions

    Structure and special chemical reactivity of interface-stabilized cerium oxide nanolayers on TiO2(110)

    S. Agnoli, A. E. Reeder, S. D. Senanayake, J. Hrbek and J. A. Rodriguez, Nanoscale, 2014, 6, 800
    DOI: 10.1039/C3NR04623K

Search articles by author

Spotlight

Advertisements