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Meso/Macroporous Ceria with Enhanced Surface Oxygen Activity via Plant‐Leaf Mineralization
Author(s) -
Chow Sukkwun,
Fan Tongxiang,
Ding Jian,
Zhang Di
Publication year - 2010
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/j.1551-2916.2009.03361.x
Subject(s) - mineralization (soil science) , cerium , mesoporous material , oxygen , template , macropore , catalysis , camphor , chemistry , chemical engineering , inorganic chemistry , materials science , nanotechnology , organic chemistry , nitrogen , engineering
Biomorphic cerias were produced through mineralizing plant‐leaf templates (camphor and common oleander) with a cerium nitrate precursor. They were mesoporous while inheriting the species‐dependent macrofeatures of plant‐leaf templates, like macropores, channels, and microfibrous clusters, to have a meso/macroporous hierarchy. Surface oxygen activity was enhanced for the biomorphic cerias, as was revealed by temperature‐programmed reduction measurements, suggesting their potentials in mid‐temperature (300°–600°C) applications of oxygen storage, catalysis, gas sensing, etc.