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H2WO4·H2O/Ag/AgCl Composite Nanoplates: A Plasmonic Z-Scheme Visible-Light Photocatalyst
Abstract
The Z-scheme has been proven to be an effective strategy to develop a high-efficiency visible-light photocatalyst. However, the visible-light-responding active component in the Z-scheme system is usually restricted to semiconductor materials sensitive to visible light. On the other hand, noble-metal nanoparticles (such as Ag) can act as an active component for the design of high-efficiency plasmonic photocatalysts due to their strong absorption in the visible light region. In this study, H 2 WO 4 ·H 2 O/Ag/AgCl composite nanoplates were prepared by a one-step ionic reaction between Ag 8 W 4 O 16 /Ag nanorods and HCl aqueous solution. The photocatalytic activity experiments indicated that the H 2 WO 4 ·H 2 O/Ag/AgCl composite nanoplates exhibited a much higher photocatalytic activity than the one-component (H 2 WO 4 ·H 2 O) or two-component (such as Ag/AgCl and H 2 WO 4 ·H 2 O/Ag) photocatalysts. On the basis of photocatalytic activity and band structure analysis, a plasmonic Z-scheme photocatalytic mechanism is proposed; namely, two-step visible-light absorption is caused by the localized surface plasmon resonance of metallic Ag nanoparticles and the band gap photoexcitation of H 2 WO 4 ·H 2 O. The present results suggest that metallic Ag nanoparticles can act as an effective active component for the construction of a Z-scheme visible-light photocatalyst. Considering the versatility and flexibility of noble-metal nanoparticles and semiconductors, this work may provide some insight into the design of novel and highly efficient Z-scheme visible-light photocatalysts.
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Cited by
Chen, S., Hu, Y., Meng, S., & Fu, X. (2014) · Applied Catalysis B: Environmental · doi:10.1016/j.apcatb.2013.12.053 · Cited by 678
Zhou, X., Liu, G., Yu, J., & Fan, W. (2012) · Journal of Materials Chemistry · doi:10.1039/c2jm31902k · Cited by 527
Self-citationChen, F., Yang, Q., Wang, Y., Zhao, J., Wang, D., Li, X., Guo, Z., Wang, H., Deng, Y., Niu, C., et al. (2017) · Applied Catalysis B: Environmental · doi:10.1016/j.apcatb.2016.12.017 · Cited by 429
Ge, L., Han, C., Xiao, X., & Guo, L. (2013) · International Journal of Hydrogen Energy · doi:10.1016/j.ijhydene.2013.04.006 · Cited by 401
Yang, X., Tian, L., Zhao, X., Tang, H., Liu, Q., & Li, G. (2019) · Applied Catalysis B: Environmental · doi:10.1016/j.apcatb.2018.11.056 · Cited by 348
Yao, X., Liu, X., & Hu, X. (2014) · ChemCatChem · doi:10.1002/cctc.201402487 · Cited by 64
Metadata
- Authors
- Wang, X., Li, S., Ma, Y., Yu, H., & Yu, J.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2011-07-11
- Volume
- 115
- Issue
- 30
- Pages
- 14648-14655
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W1988344856
- Cited by
- 266
- References
- 0
- FWCI
- 8.93
- Type
- journal article
- Language
- en
- Open access
- closed
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