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Hydrangea‐Like Meso‐/Macroporous ZnO‐CeO 2 Binary Oxide Materials: Synthesis, Photocatalysis and CO Oxidation
Author(s) -
Ma TianYi,
Yuan ZhongYong,
Cao JianLiang
Publication year - 2010
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.200900991
Subject(s) - photocatalysis , photodegradation , rhodamine b , catalysis , hydrothermal circulation , chemical engineering , chemistry , diffuse reflection , wurtzite crystal structure , oxide , visible spectrum , degradation (telecommunications) , zinc , materials science , organic chemistry , telecommunications , computer science , engineering , physics , optoelectronics , optics
A series of ZnO‐CeO 2 binary oxides with a novel hydrangea‐like morphology and meso‐/macroporous hierarchical structure of high surface area (around 100 m 2 /g) were synthesized by a simple one‐pot hydrothermal process in the presence of triblock copolymer F127. Homogeneous mixing of wurtzite ZnO and cubic phase CeO 2 and the coexistence of Ce 3+ and Ce 4+ on the surface of the synthesized ZnO‐CeO 2 materials were confirmed. UV/Vis diffuse reflectance spectra show that the absorption edges of the binary oxides shift remarkably to the visible range relative to those of pure ZnO and CeO 2 . Their photoactivities were tested by photodegradation of Rhodamine B under UV and visible light irradiation, and excellent photocatalytic performance for organic waste degradation was found in the synthesized hydrangea‐like meso‐/macroporous ZnO‐CeO 2 materials. Furthermore, their application as heterogeneous catalysts for CO removal was evaluated, and the results indicate that the synthesized ZnO‐CeO 2 materials exhibit efficient activity for removing CO by catalytic oxidation, demonstrating a promising potential in environmental remediation.