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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
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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Citations
Cited by
Semiconductor-based Photocatalytic Hydrogen Generation
Chen, X., Shen, S., Guo, L., & Mao, S. S. (2010) · Chemical Reviews · doi:10.1021/cr1001645 · Cited by 7,876
Photocatalytic Water Splitting: Recent Progress and Future Challenges
Maeda, K., & Domen, K. (2010) · The Journal of Physical Chemistry Letters · doi:10.1021/jz1007966 · Cited by 2,739
Self-citationAdvanced Nanoarchitectures for Solar Photocatalytic Applications
Kubacka, A., Fernández-García, M., & Colón, G. (2012) · Chemical Reviews · doi:10.1021/cr100454n · Cited by 2,373
Abe, R. (2010) · Journal of Photochemistry and Photobiology C: Photochemistry Reviews · doi:10.1016/j.jphotochemrev.2011.02.003 · Cited by 1,223
Photoelectrochemical CO2 reduction by a p-type boron-doped g-C3N4 electrode under visible light
Sagara, N., Kamimura, S., Tsubota, T., & Ohno, T. (2016) · Applied Catalysis B: Environmental · doi:10.1016/j.apcatb.2016.03.055 · Cited by 361
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
- OpenAlex
- W2071576355
- Cited by
- 264
- References
- 0
- FWCI
- 7.34
- Type
- journal article
- Language
- en
- Open access
- closed
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- Maeda, K., Teramura, K., Lu, D., Saito, N., Inoue, Y., & Domen, K. (2007). Roles of Rh/Cr2O3 (Core/Shell) Nanoparticles Photodeposited on Visible-Light-Responsive (Ga1-xZnx)(N1-xOx) Solid Solutions in Photocatalytic Overall Water Splitting. The Journal of Physical Chemistry C. https://doi.org/10.1021/jp071056j
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