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Photodynamics of NaTaO3 Catalysts for Efficient Water Splitting
Abstract
Electrons photoexcited in catalysts based on NaTaO 3 were observed by time-resolved infrared (IR) absorption spectroscopy. The electrons excited by 266-nm pump pulse exhibited a monotonic absorption of mid-IR light. The recombination kinetics of the excited electrons with holes was monitored in a vacuum as a function of time delay ranging from 100 ns to 1 s. When the Na content and La dopant were optimized to achieve high activity in the steady-state reaction of water splitting, the recombinative decay was hindered to increase the amount of electrons. The electrons were transferred to NiO ultrafine particles, loaded as a cocatalyst, within 1 μs following the pulse excitation. Exposing the catalysts to water vapor affected the electron decay and efficient electron transfer to water via the cocatalyst was evidenced.
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Citations
Cited by
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Chen, X., Shen, S., Guo, L., & Mao, S. S. (2010) · Chemical Reviews · doi:10.1021/cr1001645 · Cited by 7,876
Recent advances in semiconductors for photocatalytic and photoelectrochemical water splitting
Hisatomi, T., Kubota, J., & Domen, K. (2014) · Chem. Soc. Rev. · doi:10.1039/c3cs60378d · Cited by 4,580
Advanced Nanoarchitectures for Solar Photocatalytic Applications
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Ibhadon, A., & Fitzpatrick, P. (2013) · Catalysts · doi:10.3390/catal3010189 · Cited by 1,409
Metadata
- Authors
- Yamakata, A., Ishibashi, T.-A., Kato, H., Kudo, A., & Onishi, H.
- Venue
- The Journal of Physical Chemistry B
- Publisher
- American Chemical Society (ACS)
- Published
- 2003-12-01
- Volume
- 107
- Issue
- 51
- Pages
- 14383-14387
- ISSN
- 1520-5207 (ISSN-L)
- 1520-6106
- OpenAlex
- W2002159337
- Cited by
- 159
- References
- 0
- FWCI
- 1.69
- Type
- journal article
- Language
- en
- Open access
- closed
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- Yamakata, A., Ishibashi, T.-A., Kato, H., Kudo, A., & Onishi, H. (2003). Photodynamics of NaTaO3 Catalysts for Efficient Water Splitting. The Journal of Physical Chemistry B. https://doi.org/10.1021/jp036473k
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