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Photocatalytic degradation mechanisms of self-assembled rose-flower-like CeO2 hierarchical nanostructures

Title
Photocatalytic degradation mechanisms of self-assembled rose-flower-like CeO2 hierarchical nanostructures
Author
김태환
Keywords
ACID ORANGE-7; PERFORMANCE; ADSORPTION; OXIDATION
Issue Date
2013-06
Publisher
Amer INST Physics
Citation
Applied Physics Letters, 2013, 102(22), P.223115-223118
Abstract
Hierarchical rose-flower-like CeO2 nanostructures were formed by using solvothermal and thermal annealing processes. The CeCO3OH thin film was transformed into CeO2 roses due to thermal annealing. CeO2 nanostructured roses exhibited excellent photocatalytic activity with a degradation rate of 65% for the azo dye acid orange 7 (AO7) under ultraviolet illumination. The fitting of the absorbance maximum versus time showed that the degradation of AO7 obeyed pseudo-first-order reaction kinetics. The enhancement of the photocatalytic activity for the CeO2 roses was attributed to the high adsorptivity resulting from the surface active sites and special 4f electron configuration.
URI
https://aip.scitation.org/doi/10.1063/1.4810005
ISSN
0003-6951
DOI
10.1063/1.4810005
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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