Concentration of Ce3+ and Oxygen Vacancies in Cerium Oxide Nanoparticles
作者： P. Dutta , S. Pal , M. S. Seehra , Y. Shi , E. M. Eyring
DOI: 10.1021/CM061580N
关键词:
摘要: Temperature variations of the electron magnetic resonance (EMR) spectra and magnetization measurements are used to show that Ce3+ ions in concentration ≃18% present 3 nm CeO2 nanoparticles supported on silica aerogel. It is argued presence implies defect structure CeO2-x for ceria due oxygen vacancies. This transformation Ce4+ driven by vacancies may be key understanding catalytic properties ceria.
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