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Preparation and enhanced visible-light photocatalytic H2-production activity of CdS-sensitized Pt/TiO2 nanosheets with exposed (001) facets
Abstract
CdS-sensitized Pt/TiO(2) nanosheets with exposed (001) facets were prepared by hydrothermal treatment of a Ti(OC(4)H(9))(4)-HF-H(2)O mixed solution followed by photochemical reduction deposition of Pt nanoparticles (NPs) on TiO(2) nanosheets (TiO(2) NSs) and chemical bath deposition of CdS NPs on Pt/TiO(2) NSs, successively. The UV and visible-light driven photocatalytic activity of the as-prepared samples was evaluated by photocatalytic H(2) production from lactic acid aqueous solution under UV and visible-light (λ ≥ 420 nm) irradiation. It was shown that no photocatalytic H(2)-production activity was observed on the pure TiO(2) NSs under UV and/or visible-light irradiation. Deposition of CdS NPs on Pt/TiO(2) NSs caused significant enhancement of the UV and visible-light photocatalytic H(2)-production rates. The morphology of TiO(2) particles had also significant influence on the visible-light H(2)-production activity. Among TiO(2) NSs, P25 and the NPs studied, the CdS-sensitized Pt/TiO(2) NSs show the highest photocatalytic activity (13.9% apparent quantum efficiency obtained at 420 nm), exceeding that of CdS-sensitized Pt/P25 by 10.3% and that of Pt/NPs by 1.21%, which can be attributed to the combined effect of several factors including the presence of exposed (001) facets, surface fluorination and high specific surface area. After many replication experiments of the photocatalytic hydrogen production in the presence of lactic acid, the CdS-sensitized Pt/TiO(2) NSs did not show great loss in the photocatalytic activity, confirming that the CdS/Pt/TiO(2) NSs system is stable and not photocorroded.
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Cites
Sing, K. S. W. (1985) · Pure and Applied Chemistry · doi:10.1351/pac198557040603 · Cited by 24,485
Photocatalysis on TiO2 Surfaces: Principles, Mechanisms, and Selected Results
Linsebigler, A. L., Lu, G., & Yates, J. T. (1995) · Chemical Reviews · doi:10.1021/cr00035a013 · Cited by 11,575
The surface science of titanium dioxide
Diebold, U. (2003) · Surface Science Reports · doi:10.1016/s0167-5729(02)00100-0 · Cited by 7,944
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Graphene-based semiconductor photocatalysts
Xiang, Q., Yu, J., & Jaroniec, M. (2012) · Chem. Soc. Rev. · doi:10.1039/c1cs15172j · Cited by 2,730
Self-citationTitanium Dioxide Crystals with Tailored Facets
Liu, G., Yang, H. G., Pan, J., Yang, Y. Q., Lu, G. Q. (., & Cheng, H.-M. (2014) · Chemical Reviews · doi:10.1021/cr400621z · Cited by 1,084
Zhang, J., Yu, J., Jaroniec, M., & Gong, J. R. (2012) · Nano Letters · doi:10.1021/nl301831h · Cited by 894
Self-citationZhou, X., Liu, G., Yu, J., & Fan, W. (2012) · Journal of Materials Chemistry · doi:10.1039/c2jm31902k · Cited by 527
Self-citationCadmium sulfide-based nanomaterials for photocatalytic hydrogen production
Yuan, Y.-J., Chen, D., Yu, Z.-T., & Zou, Z.-G. (2018) · Journal of Materials Chemistry A · doi:10.1039/c8ta00671g · Cited by 523
Metadata
- Authors
- Qi, L., Yu, J., & Jaroniec, M.
- Venue
- Physical Chemistry Chemical Physics
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2011
- Volume
- 13
- Issue
- 19
- Pages
- 8915
- ISSN
- 1463-9076 (ISSN-L)
- 1463-9084
- OpenAlex
- W2046076230
- Cited by
- 255
- References
- 3
- FWCI
- 13.40
- Type
- journal article
- Language
- en
- Open access
- closed
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- Qi, L., Yu, J., & Jaroniec, M. (2011). Preparation and enhanced visible-light photocatalytic H2-production activity of CdS-sensitized Pt/TiO2 nanosheets with exposed (001) facets. Physical Chemistry Chemical Physics. https://doi.org/10.1039/c1cp20079h
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