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장지욱

Jang, Ji-Wook
JW Energy Lab.
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Defective ZnFe2O4 nanorods with oxygen vacancy for photoelectrochemical water splitting

Author(s)
Kim, Ju HunJang, Youn JeongKim, Jin HyunJang, Ji-WookChoi, b Sun HeeLee, Jae Sung
Issued Date
2015-12
DOI
10.1039/c5nr05812k
URI
https://scholarworks.unist.ac.kr/handle/201301/17922
Fulltext
http://pubs.rsc.org/en/Content/ArticleLanding/2015/NR/C5NR05812K#!divAbstract
Citation
NANOSCALE, v.7, no.45, pp.19144 - 19151
Abstract
A one-dimensional zinc ferrite (ZnFe2O4) nanorod photoanode was prepared by a simple solution method on the F-doped tin oxide glass substrate. Thermal treatment under a hydrogen or vacuum atmosphere improved the photoelectrochemical water oxidation activity up to 20 times. The various physical characterization techniques used revealed that oxygen vacancies were created by the treatments in the near surface region, which increased the donor density and passivated the surface states. Hydrogen treatment was more effective and it was important to find optimum treatment conditions to take advantage of the positive role of oxygen vacancy as a source of electron donors and avoid its negative effect as electron trap sites.
Publisher
ROYAL SOC CHEMISTRY
ISSN
2040-3364
Keyword
MONOCLINIC BIVO4OXIDATIONHYDROGENPERFORMANCETIO2NANOSTRUCTURESARRAY

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