Publication

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

조회수 : 55 등록일 : 2017.09.19 00:00

저자 : Seo, WS (Seo, Won Seok)
출처 : JOURNAL OF THE AMERICAN CERAMIC SOCIETY
출판일 : 2017.09.01


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


Cheon, SY (Cheon, Se Young)1 ] Yoon, JS (Yoon, Jae-Sik)2 ] Oh, KH (Oh, Kyung Hee)1 ] Jang, KY (Jang, Kyu Yeon)1 ] Seo, JH (Seo, Jong Hyeok)1 ] Park, JY (Park, Joon Yong)1 ] Choi, SI (Choi, Sang-Il)3,4 ] Seo, WS (Seo, Won Seok)5 ] Lee, G (Lee, Gaehang)2 ] Nam, KM (Nam, Ki Min)1 ]


[ 1 ] Mokpo Natl Univ, Dept Chem, 1666 Yeongsan Ro, Jeonnam, South Korea
[ 2 ] KBSI, Daejeon, South Korea
[ 3 ] Kyungpook Natl Univ, Dept Chem, Daegu, South Korea
[ 4 ] Kyungpook Natl Univ, Green Nano Mat Res Ctr, Daegu, South Korea
[ 5 ] Sogang Univ, Dept Chem, Seoul, South Korea



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.






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