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Synthesis and Photocatalytic Activity of Rhodium-Doped Calcium Niobate Nanosheets for Hydrogen Production from a Water/Methanol System without Cocatalyst Loading
Abstract
Rhodium-doped calcium niobate nanosheets were synthesized by exfoliating layered KCa(2)Nb(3-x)Rh(x)O(10-δ) and exhibited high photocatalytic activity for H(2) production from a water/methanol system without cocatalyst loading. The maximum H(2) production rate of the nanosheets was 165 times larger than that of the parent Rh-doped layered oxide. The quantum efficiency at 300 nm was 65%. In this system, the methanol was oxidized to formaldehyde (main product), formic acid, and carbon dioxide by holes, whereas electrons cause the reduction of water to H(2). The conductivity of the parent layered oxide was decreased by doping, which indicates the octahedral RhO(6) unit in the lattice of the nanosheet functions as an electron trap site. The RhO(6) units in the nanosheet probably also act as reaction sites for H(2) evolution.
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Cited by
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Feng, C., Wu, Z., Huang, K., Ye, J., & Zhang, H. (2022) · Advanced Materials · doi:10.1002/adma.202200180 · Cited by 456
Jiang, D., Wang, T., Xu, Q., Li, D., Meng, S., & Chen, M. (2017) · Applied Catalysis B: Environmental · doi:10.1016/j.apcatb.2016.09.001 · Cited by 423
Zhang, Z., Jiang, D., Li, D., He, M., & Chen, M. (2016) · Applied Catalysis B: Environmental · doi:10.1016/j.apcatb.2015.10.022 · Cited by 284
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Metadata
- Authors
- Okamoto, Y., Ida, S., Hyodo, J., Hagiwara, H., & Ishihara, T.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2011-10-26
- Volume
- 133
- Issue
- 45
- Pages
- 18034-18037
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2031685608
- Cited by
- 229
- References
- 0
- FWCI
- 4.20
- Type
- journal article
- Language
- en
- Open access
- closed
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- Okamoto, Y., Ida, S., Hyodo, J., Hagiwara, H., & Ishihara, T. (2011). Synthesis and Photocatalytic Activity of Rhodium-Doped Calcium Niobate Nanosheets for Hydrogen Production from a Water/Methanol System without Cocatalyst Loading. Journal of the American Chemical Society. https://doi.org/10.1021/ja207103j
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