Premium
Synthesis of CeO 2 nanoparticles with different morphologies and their properties as peroxidase mimic
Author(s) -
Zhang Baoliang,
Huyan Yu,
Wang Jiqi,
Wang Wenbin,
Zhang Qiuyu,
Zhang Hepeng
Publication year - 2019
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.16071
Subject(s) - catalysis , nanoparticle , crystallinity , chemical engineering , specific surface area , materials science , nanomaterial based catalyst , peroxidase , nanotechnology , chemistry , organic chemistry , enzyme , engineering
The overall objective of this work was to identify and determine the controlling factors of catalytic activity of CeO 2 nanoparticles with different properties. Therefore, four kinds of CeO 2 nanoparticles are successfully synthesized and used as peroxidase mimics. The results reveal that the catalytic activity is related to specific surface area and surface oxygen (O sur ) content. For different CeO 2 nanoparticles, specific surface area is the leading factor of catalytic activity. The catalytic activity increases with the increasing specific surface area. If the CeO 2 nanoparticles have similar specific surface area, the less O sur contains, the lower catalytic activity will be. Meanwhile, crystallinity is not the influence factor of catalytic activity. Bamboo‐like CeO 2 (B‐CeO 2 ) nanoparticles show excellent catalytic activity and the reaction conditions are optimized. Furthermore, the catalytic activity of B‐CeO 2 nanoparticles decreases very slightly after 15 cycles of the catalysis experiment. Therefore, B‐CeO 2 nanoparticles can serve as effective recyclable peroxidase mimics.