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Efficient Visible‐Light‐Driven Z‐Scheme Overall Water Splitting Using a MgTa2O6−xNy /TaON Heterostructure Photocatalyst for H2 Evolution
Abstract
An (oxy)nitride‐based heterostructure for powdered Z‐scheme overall water splitting is presented. Compared with the single MgTa 2 O 6−xNy or TaON photocatalyst, a MgTa 2 O 6−xNy /TaON heterostructure fabricated by a simple one‐pot nitridation route was demonstrated to effectively suppress the recombination of carriers by efficient spatial charge separation and decreased defect density. By employing Pt‐loaded MgTa 2 O 6−xNy /TaON as a H 2‐evolving photocatalyst, a Z‐scheme overall water splitting system with an apparent quantum efficiency (AQE) of 6.8 % at 420 nm was constructed (PtOx‐WO 3 and IO 3−/I− pairs were used as an O 2‐evolving photocatalyst and a redox mediator, respectively), the activity of which is circa 7 or 360 times of that using Pt‐TaON or Pt‐MgTa 2 O 6−xNy as a H 2‐evolving photocatalyst, respectively. To the best of our knowledge, this is the highest AQE among the powdered Z‐scheme overall water splitting systems ever reported.
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Cited by
Ong, W.-J., Tan, L.-L., Ng, Y. H., Yong, S.-T., & Chai, S.-P. (2016) · Chemical Reviews · doi:10.1021/acs.chemrev.6b00075 · Cited by 7,147
Z‐Scheme Photocatalytic Systems for Solar Water Splitting
Ng, B., Putri, L. K., Kong, X. Y., Teh, Y. W., Pasbakhsh, P., & Chai, S. (2020) · Advanced Science · doi:10.1002/advs.201903171 · Cited by 533
Photocatalytic and Photoelectrochemical Systems: Similarities and Differences
Wu, H., Tan, H. L., Toe, C. Y., Scott, J., Wang, L., Amal, R., & Ng, Y. H. (2020) · Advanced Materials · doi:10.1002/adma.201904717 · Cited by 394
Deng, Y., Zhang, Z., Du, P., Ning, X., Wang, Y., Zhang, D., Liu, J., Zhang, S., & Lu, X. (2020) · Angewandte Chemie International Edition · doi:10.1002/anie.201916154 · Cited by 298
Metadata
- Authors
- Chen, S., Qi, Y., Hisatomi, T., Ding, Q., Asai, T., Li, Z., Ma, S. S. K., Zhang, F., Domen, K., & Li, C.
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2015-06-03
- Volume
- 54
- Issue
- 29
- Pages
- 8498-8501
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W1948473998
- Cited by
- 299
- References
- 0
- FWCI
- 10.46
- Type
- journal article
- Language
- en
- Open access
- closed
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- Chen, S., Qi, Y., Hisatomi, T., Ding, Q., Asai, T., Li, Z., Ma, S. S. K., Zhang, F., Domen, K., & Li, C. (2015). Efficient Visible‐Light‐Driven Z‐Scheme Overall Water Splitting Using a MgTa2O6−xNy /TaON Heterostructure Photocatalyst for H2 Evolution. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.201502686
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