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Acquired Superoxide‐Scavenging Ability of Ceria Nanoparticles
Author(s) -
Li Yuanyuan,
He Xiao,
Yin JunJie,
Ma Yuhui,
Zhang Peng,
Li Jingyuan,
Ding Yayun,
Zhang Jing,
Zhao Yuliang,
Chai Zhifang,
Zhang Zhiyong
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201410398
Subject(s) - superoxide , scavenging , scavenger , chemistry , nanoparticle , superoxide radical , reactive oxygen species , nanotechnology , antioxidant , biochemistry , materials science , enzyme
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 Ce 3+ /Ce 4+ 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.