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{Ta12}/{Ta16} Cluster-Containing Polytantalotungstates with Remarkable Photocatalytic H2Evolution Activity
Abstract
Four novel polytantalotungstates K(5)Na(4)[P(2)W(15)O(59)(TaO(2))(3)]·17H(2)O (1), K(8)Na(8)H(4)[P(8)W(60)Ta(12)(H(2)O)(4)(OH)(8)O(236)]·42H(2)O (2), Cs(3)K(3.5)H(0.5)[SiW(9)(TaO(2))(3)O(37)]·9H(2)O (3), and Cs(10.5)K(4)H(5.5)[Ta(4)O(6)(SiW(9)Ta(3)O(40))(4)]·30H(2)O (4) were synthesized. Compounds 1 and 3 are tris-(peroxotantalum)-substituted Dawson- and Keggin-type derivatives, whereas 2 and 4 are tetrameric oligomers containing respectively an unprecedented {Ta(12)} and {Ta(16)} cluster core. The photocatalytic activities of 2 and 4 for H(2) evolution from water were evaluated. The significantly enhanced performance against the control K(6)[P(2)W(18)O(62)] can be attributed to the modulation of the electronic structures of these novel POMs by Ta incorporation. The highest activity observed so far with the use of 2 can be further rationalized by the presence of distorted heptacoordinate Ta atoms in the form of TaO(7) pentagonal bipyramid.
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Citations
Cites
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
Cited by
Pristine Metal–Organic Frameworks and their Composites for Energy Storage and Conversion
Liang, Z., Qu, C., Guo, W., Zou, R., & Xu, Q. (2018) · Advanced Materials · doi:10.1002/adma.201702891 · Cited by 787
Huang, H., He, Y., Lin, Z., Kang, L., & Zhang, Y. (2013) · The Journal of Physical Chemistry C · doi:10.1021/jp4084184 · Cited by 373
Metadata
- Authors
- Li, S., Liu, S., Liu, S., Liu, Y., Tang, Q., Shi, Z., Ouyang, S., & Ye, J.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2012-11-20
- Volume
- 134
- Issue
- 48
- Pages
- 19716-19721
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W1975556156
- Cited by
- 181
- References
- 1
- FWCI
- 7.67
- Type
- journal article
- Language
- en
- Open access
- closed
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