Anisotropy in photocatalytic oxidization activity of NaNbO sub(3) photocatalyst

NaNbO sub(3) single-crystal films with (100), (110) and (111) oriented crystal planes were grown on LaAlO sub(3) (100), (110) and (111) substrates by pulsed laser deposition. The NaNbO sub(3) films exhibit anisotropy in the photocatalytic oxidization activity for Rhodamine B (RhB) degradation. The i...

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Bibliographic Details
Published in:Dalton transactions : an international journal of inorganic chemistry 2012-08, Vol.41 (34), p.10194-10198
Main Authors: Li, Guoqiang, Yi, Zhiguo, Bai, Ying, Zhang, Weifeng, Zhang, Haitao
Format: Article
Language:English
Subjects:
Anisotropy
Coercive force
Crystal structure
Degradation
Ferroelectric materials
Ferroelectricity
Photocatalysis
Pulsed laser deposition
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Summary:NaNbO sub(3) single-crystal films with (100), (110) and (111) oriented crystal planes were grown on LaAlO sub(3) (100), (110) and (111) substrates by pulsed laser deposition. The NaNbO sub(3) films exhibit anisotropy in the photocatalytic oxidization activity for Rhodamine B (RhB) degradation. The increasing order of RhB degradation in Ar atmosphere under full arc irradiation of a Xe lamp is (100) < (110) < (111), which is consistent with that of &z.rad; OH generation. The good linear relationship between the activity of RhB degradation and the coercive electric field indicates that the photocatalytic activity is closely related to the ferroelectric property.
ISSN:1477-9226
1477-9234
DOI:10.1039/c2dt30593c