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The Template‐Free Synthesis of CuO@CeO 2 Nanospheres: Facile Strategy, Structure Optimization, and Enhanced Catalytic Activity toward CO Oxidation
Author(s) -
Su Yunfei,
Yuan Shanshan,
Ning Dandan,
Zhang Qingwen,
Han Weiliang,
Wang Yi
Publication year - 2018
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201800348
Subject(s) - catalysis , chemistry , mesoporous material , chemical engineering , nanotechnology , nanoparticle , combinatorial chemistry , materials science , organic chemistry , engineering
The template‐free construction of hollow multiporous materials with hierarchically multiporous walls, unique morphologies, and functionalities remains a great challenge in materials science. Here, we describe a facile template‐free approach to synthesize hollow multiporous‐walled CeO 2 (HMW‐CeO 2 ) nanospheres. The HMW‐CeO 2 nanosphere possesses a hierarchically multiporous wall, with pore sizes ranging from micropores to mesopores, centered at 0.43, 4.2, and 14.3 nm. The CuO loaded HMW‐CeO 2 support (HMW‐CuO@CeO 2 ) is evaluated for its catalytic activity in a CO oxidation reaction. The HMW‐CuO@CeO 2 support exhibits a higher catalytic activity than all of the other CeO 2 catalysts. The results show a low T 100 of about 60 °C (the temperature at which 100 % CO conversion has been achieved) and high stability, with negligible decrease in the CO conversion during 12 h of reaction. Overall, it provides a simple, low‐cost and mass‐productive method for the preparation of highly active catalysts for CO oxidation.