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Cited by 264

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Roles of Rh/Cr2O3 (Core/Shell) Nanoparticles Photodeposited on Visible-Light-Responsive (Ga1-xZnx)(N1-xOx) Solid Solutions in Photocatalytic Overall Water Splitting

Maeda, Kazuhiko, Teramura, Kentaro, Lu, Daling, Saito, Nobuo, Inoue, Yasunobu, Domen, Kazunari·2007·The Journal of Physical Chemistry C
DOI 10.1021/jp071056j
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Abstract

Photodeposited Rh/Cr 2 O 3 (core/shell) nanoparticles on a (Ga 1- x Zn x )(N 1- x O x ) photocatalyst are studied as a cocatalyst for overall water splitting. Irradiation of Rh-loaded (Ga 1- x Zn x )(N 1- x O x ) with visible light (λ > 400 nm) in aqueous K 2 CrO 4 solution results in the formation of core/shell-structured nanoparticles consisting of a Rh core and Cr 2 O 3 shell through the site-selective photoreduction of CrO 4 2- anions to Cr 2 O 3 on Rh nanoparticles. The shell thickness increases with concentration of K 2 CrO 4 in the reactant solution to a maximum of ca. 2 nm, at which a uniform Cr 2 O 3 coating is obtained. The Cr 2 O 3 shell suppresses water formation from H 2 and O 2 on Rh nanoparticles, allowing stoichiometric decomposition of pure water to be achieved. The core/shell structure also provides enhanced H 2 evolution compared to that of bare Rh nanoparticles.

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Metadata

Authors
Maeda, K., Teramura, K., Lu, D., Saito, N., Inoue, Y., & Domen, K.
Venue
The Journal of Physical Chemistry C
Publisher
American Chemical Society (ACS)
Published
2007-05-01
Volume
111
Issue
20
Pages
7554-7560
ISSN
  • 1932-7447 (ISSN-L)
  • 1932-7455
DOI
10.1021/jp071056j
OpenAlex
W2071576355
Cited by
264
References
0
FWCI
7.34
Type
journal article
Language
en
Open access
closed

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