The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
A Stable, Narrow-Gap Oxyfluoride Photocatalyst for Visible-Light Hydrogen Evolution and Carbon Dioxide Reduction
Abstract
Mixed anion compounds such as oxynitrides and oxychalcogenides are recognized as potential candidates of visible-light-driven photocatalysts since, as compared with oxygen 2p orbitals, p orbitals of less electronegative anion (e.g., N 3–, S 2– ) can form a valence band that has more negative potential. In this regard, oxyfluorides appear unsuitable because of the higher electronegativity of fluorine. Here we show an exceptional case, an anion-ordered pyrochlore oxyfluoride Pb 2 Ti 2 O 5.4 F 1.2 that has a small band gap (ca. 2.4 eV). With suitable modification of Pb 2 Ti 2 O 5.4 F 1.2 by promoters such as platinum nanoparticles and a binuclear ruthenium(II) complex, Pb 2 Ti 2 O 5.4 F 1.2 worked as a stable photocatalyst for visible-light-driven H 2 evolution and CO 2 reduction. Density functional theory calculations have revealed that the unprecedented visible-light-response of Pb 2 Ti 2 O 5.4 F 1.2 arises from strong interaction between Pb-6s and O-2p orbitals, which is enabled by a short Pb–O bond in the pyrochlore lattice due to the fluorine substitution.
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Cites
Electronic excitations: density-functional versus many-body Green’s-function approaches
Onida, G., Reining, L., & Rubio, A. (2002) · Reviews of Modern Physics · doi:10.1103/revmodphys.74.601 · Cited by 4,155
Cited by
Wang, S., Guan, B. Y., Wang, X., & Lou, X. W. D. (2018) · Journal of the American Chemical Society · doi:10.1021/jacs.8b07721 · Cited by 852
Wang, S., Wang, Y., Zhang, S. L., Zang, S., & Lou, X. W. (. (2019) · Advanced Materials · doi:10.1002/adma.201903404 · Cited by 438
Wang, X.-K., Liu, J., Zhang, L., Dong, L.-Z., Li, S.-L., Kan, Y.-H., Li, D.-S., & Lan, Y.-Q. (2019) · ACS Catalysis · doi:10.1021/acscatal.8b04887 · Cited by 384
Masunga, N., Mmelesi, O. K., Kefeni, K. K., & Mamba, B. B. (2019) · Journal of Environmental Chemical Engineering · doi:10.1016/j.jece.2019.103179 · Cited by 284
Metadata
- Authors
- Kuriki, R., Ichibha, T., Hongo, K., Lu, D., Maezono, R., Kageyama, H., Ishitani, O., Oka, K., & Maeda, K.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2018-05-07
- Volume
- 140
- Issue
- 21
- Pages
- 6648-6655
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2801889674
- Cited by
- 171
- References
- 1
- FWCI
- 5.37
- Type
- journal article
- Language
- en
- Open access
- closed
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