Sonochemical synthesis of ZnO‐ZnS core‐shell nanorods for enhanced photoelectrochemical water oxidation

The ultrasonic‐assisted synthesis method provides a fast, simple, and large‐scale route for synthesizing desired materials under ambient conditions. In this work, we report on the facile preparation of ZnO‐ZnS core‐shell nanorods on a fluorine‐doped tin oxide (FTO) substrate. The core‐shell nanorods...

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Bibliographic Details
Published in:Journal of the American Ceramic Society 2017-09, Vol.100 (9), p.3825-3834
Main Authors: Cheon, Se Young, Yoon, Jae‐Sik, Oh, Kyung Hee, Jang, Kyu Yeon, Seo, Jong Hyeok, Park, Joon Yong, Choi, Sang‐Il, Seo, Won Seok, Lee, Gaehang, Nam, Ki Min
Format: Article
Language:English
Subjects:
Chemical synthesis
core‐shell structures
Fluorine
Nanorods
Oxidation
photocatalysis
Ultrasonic testing
ultrasonics
Zinc oxide
Zinc sulfide
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Summary:The ultrasonic‐assisted synthesis method provides a fast, simple, and large‐scale route for synthesizing desired materials under ambient conditions. In this work, we report on the facile preparation of ZnO‐ZnS core‐shell nanorods on a fluorine‐doped tin oxide (FTO) substrate. The core‐shell nanorods were synthesized by sequential nanoscale reactions involving the preparation of ZnO nanorods and conversion of the ZnO surface into a ZnS shell on the FTO substrate, using an in situ sonochemical method. The ZnO‐ZnS core‐shell nanorods showed improved photocurrents compared with ZnO nanorods for the water oxidation reaction. During the water oxidation reaction, the ZnS shell passivates the surface‐defects of the ZnO, which results in enhanced charge separation in the ZnO nanorods and higher performance.
ISSN:0002-7820
1551-2916
DOI:10.1111/jace.14935