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ZnO-CdZnS Core-Shell Nanocable Arrays for Highly Efficient Photoelectrochemical Hydrogen Generation

Published online by Cambridge University Press:  01 February 2011

Yoon Myung
Affiliation:
qoouni@korea.ac.kr, Korea University, Material Chemistry, Jochiwon, Korea, Republic of
Dong Myung Jang
Affiliation:
wavejd@naver.com, Korea University, Jochiwon, Korea, Republic of
Yong Jei Sohn
Affiliation:
nistelrooy@naver.com, Korea University, Jochiwon, Korea, Republic of
Tae Kwang Sung
Affiliation:
stk818@nate.com, Korea University, Jochiwon, Korea, Republic of
Gyeong Bok Jung
Affiliation:
marie-jung@korea.ac.kr, Korea University, Jochiwon, Korea, Republic of
Yong Jae Cho
Affiliation:
valunus@nate.com, Korea University, Jochiwon, Korea, Republic of
Han Sung Kim
Affiliation:
rhymester@korea.ac.kr, Korea University, Material Chemistry, Jochiwon, Korea, Republic of
Jeunghee Park
Affiliation:
parkjh@korea.ac.kr, Korea University, Material Chemistry, Jochiwon, Korea, Republic of
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Abstract

High-density TiO2-CdS and ZnO-CdS core-shell nanocable arrays were synthesized on large-area Ti substrates. The CdS layers were deposited on the pre-grown vertically-aligned TiO2 (rutile) and ZnO nanowire arrays, with a controlled thickness (10~50 nm), using the vapor transport method. The ZnO-CdS nanocables consisted of single-crystalline wurtzite CdS shells whose [001] direction was aligned along the [001] wire axis of the wurtzite ZnO core, which is distinctive from the polycrystalline shell of the TiO2-CdS nanocables. We fabricated the photoelectrochemical cell using the ZnO-CdS photoelectrode exhibits much more efficient hydrogen generation than that using the TiO2-CdS one.

Type
Research Article
Copyright
Copyright © Materials Research Society 2010

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ZnO-CdZnS Core-Shell Nanocable Arrays for Highly Efficient Photoelectrochemical Hydrogen Generation
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