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Cho, Seungho
Metal Oxide DEsign Laboratory (MODEL)
Research Interests
  • Metal Oxide Crystal Growth

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An exceptionally facile method to produce layered double hydroxides on a conducting substrate and their application for solar water splitting without an external bias

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Title
An exceptionally facile method to produce layered double hydroxides on a conducting substrate and their application for solar water splitting without an external bias
Author
Cho, SeunghoJang, Ji-WookPark, Yoon BinKim, Jae YoungMagesh, GanesanKim, Jin HyunSeol, MinsuYong, KijungLee, Kun-HongLee, Jae Sung
Issue Date
2014-07
Publisher
ROYAL SOC CHEMISTRY
Citation
ENERGY & ENVIRONMENTAL SCIENCE, v.7, no.7, pp.2301 - 2307
Abstract
An exceptionally facile process is presented for in situ formation of zinc chromium layered double hydroxide (ZnCr:LDH) nanosheets on a conducting substrate. Thus, ZnCr:LDH nanosheets were synthesized from a metallic Zn film/fluorine-doped tin oxide (FTO) glass by simply dipping into a Cr nitrate solution for only one minute at room temperature. Then, ZnCr:LDHs were converted into zinc chromium mixed metal oxide (ZnCr:MMO) nanoparticles by calcination. Under visible light irradiation (λ > 420 nm), the in situ synthesized ZnCr:MMO photoanode exhibited a stable and an order-of-magnitude higher activity for photoelectrochemical water splitting than that of a ZnCr:MMO film fabricated ex situ by electrophoretic deposition of already-synthesized ZnCr:MMO powders. More significant was that it generated anodic photocurrents even without an externally applied bias potential, which is an unprecedented result for an oxide photoanode-driven PEC system working under visible light.
URI
https://scholarworks.unist.ac.kr/handle/201301/5167
URL
http://pubs.rsc.org/en/content/articlelanding/2014/ee/c3ee43965h#!divAbstract
DOI
10.1039/c3ee43965h
ISSN
1754-5692
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