Acquired superoxide-scavenging ability of ceria nanoparticles

Yuanyuan Li, Xiao He, Jun Jie Yin, Yuhui Ma, Peng Zhang, Jingyuan Li, Yayun Ding, Jing Zhang, Yuliang Zhao, Zhifang Chai, Zhiyong Zhang

Research output: Contribution to journalArticle

116 Scopus citations

Abstract

Ceria nanoparticles (nanoceria) are well known as a superoxide scavenger. However, inherent superoxide-scavenging ability has only been found in the nanoceria with sizes of less than 5 nm and with very limited shape diversity. Reported herein is a strategy to significantly improve the superoxide-scavenging activity of nanoceria sized at greater than 5 nm. The nanoceria with sizes of greater than 5 nm, with different shapes, and with a negligible Ce3+/Ce4+ ratio can acquire remarkable superoxide-scavenging abilities through electron transfer. This method will make it possible to develop nanoceria-based superoxide-scavengers with long-acting activity and tailorable characteristics.

Original languageEnglish (US)
Pages (from-to)1832-1835
Number of pages4
JournalAngewandte Chemie - International Edition
Volume54
Issue number6
DOIs
StatePublished - Feb 9 2015

Keywords

  • Cerium
  • Electron transfer
  • Nanoparticles
  • Oxides
  • Surface chemistry

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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