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Sonochemical synthesis of ZnO‐ZnS core‐shell nanorods for enhanced photoelectrochemical water oxidation
Author(s) -
Cheon Se Young,
Yoon JaeSik,
Oh Kyung Hee,
Jang Kyu Yeon,
Seo Jong Hyeok,
Park Joon Yong,
Choi SangIl,
Seo Won Seok,
Lee Gaehang,
Nam Ki Min
Publication year - 2017
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/jace.14935
Subject(s) - nanorod , materials science , tin oxide , substrate (aquarium) , chemical engineering , nanotechnology , doping , nanoscopic scale , tin , shell (structure) , zinc , optoelectronics , composite material , metallurgy , oceanography , geology , engineering
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.