Abstract

We have followed the dynamic redox process taking place in individual ceria zirconia nanoparticles with changes in the oxygen chemical potential using an in situ environmental transmission electron microscopy (ETEM). We observe considerable variability in the redox activity and have been able to correlate these differences with nanoscale structural and compositional measurements. We find that the more active structure has predominantly disordered cations and shows no evidence for oxygen vacancy ordering during reduction.

Original languageEnglish (US)
Pages (from-to)962-967
Number of pages6
JournalNano Letters
Volume8
Issue number3
DOIs
StatePublished - Mar 2008

Fingerprint

Cerium
cerium
Oxides
Nanoparticles
nanoparticles
oxides
Chemical potential
Cerium compounds
oxygen
Oxygen vacancies
zirconium oxides
Zirconia
Cations
Positive ions
Oxygen
Transmission electron microscopy
cations
transmission electron microscopy
Oxidation-Reduction
zirconium oxide

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanical Engineering
  • Electronic, Optical and Magnetic Materials
  • Chemistry (miscellaneous)

Cite this

Measuring the redox activity of individual catalytic nanoparticles in cerium-based oxides. / Wang, Ruigang; Crozier, Peter; Sharma, Renu; Adams, James.

In: Nano Letters, Vol. 8, No. 3, 03.2008, p. 962-967.

Research output: Contribution to journalArticle

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