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Location and State of Pt in Platinized CdS/TiO2 Photocatalysts for Hydrogen Production from Water under Visible Light
Abstract
CdS/TiO 2 composite photocatalysts were platinized by different methods such as photodeposition (PD), wet impregnation (WI), and chemical reduction (CR), and studied for hydrogen production from water under visible light. All Pt species were in the metallic state, yet PD and WI photocatalysts contained electron-deficient Pt. In particular, Pt−Ti formation was identified in the WI catalyst, which contributed to electron deficiency of Pt. These two photocatalysts of electron-deficient Pt exhibited higher rates of hydrogen evolution due to favorable diffusion of photoelectrons from excited CdS toward the Pt. Between PD and WI photocatalysts, the PD catalyst showed a lower rate because part of the Pt in the catalyst resided on CdS, whereas all Pt species were located on TiO 2 nanoparticles for WI and CR catalysts. The results indicate that the location as well as the electronic state of Pt is important for the high performance of platinized CdS/TiO 2 photocatalysts in hydrogen production from water.
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Cited by
Maeda, K., Higashi, M., Lu, D., Abe, R., & Domen, K. (2010) · Journal of the American Chemical Society · doi:10.1021/ja1009025 · Cited by 733
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Park, H., Kim, H.-I., Moon, G.-H., & Choi, W. (2016) · Energy & Environmental Science · doi:10.1039/c5ee02575c · Cited by 582
Self-citationMeng, A., Zhang, J., Xu, D., Cheng, B., & Yu, J. (2016) · Applied Catalysis B: Environmental · doi:10.1016/j.apcatb.2016.05.074 · Cited by 426
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Nguyen, V., Vu, V., Nguyen, T., Nguyen, T., Tran, V., & Nguyen-Tri, P. (2019) · Journal of Composites Science · doi:10.3390/jcs3020061 · Cited by 144
Pan, Y.-X., Cong, H.-P., Men, Y.-L., Xin, S., Sun, Z.-Q., Liu, C.-J., & Yu, S.-H. (2015) · ACS Nano · doi:10.1021/acsnano.5b04884 · Cited by 84
Metadata
- Authors
- Jang, J. S., Choi, S. H., Kim, H. G., & Lee, J. S.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2008-10-11
- Volume
- 112
- Issue
- 44
- Pages
- 17200-17205
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W2029521163
- Cited by
- 190
- References
- 0
- FWCI
- 3.58
- Type
- journal article
- Language
- en
- Open access
- closed
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