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Hole scavenger redox potentials determine quantum efficiency and stability of Pt-decorated CdS nanorods for photocatalytic hydrogen generation
Abstract
We use Pt-decorated CdS nanorods for photocatalytic hydrogen generation in the presence of sacrificial hole scavengers. Both the quantum efficiency for hydrogen generation and the stability of the colloidal nanocrystals in solution improve with increasing redox potential of the hole scavenger. The higher redox potential leads to faster hole scavenging, which increases quantum efficiency and stability since electron hole recombination and oxidation of the CdS become less important. The quantum efficiencies can be tuned over more than an order of magnitude. This finding is important for choosing hole scavengers and for comparing efficiencies and stabilities for different photocatalytic nanosystems.
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Cites
Semiconductor-based Photocatalytic Hydrogen Generation
Chen, X., Shen, S., Guo, L., & Mao, S. S. (2010) · Chemical Reviews · doi:10.1021/cr1001645 · Cited by 7,876
Cited by
Use of scavenger agents in heterogeneous photocatalysis: truths, half-truths, and misinterpretations
Schneider, J. T., Firak, D. S., Ribeiro, R. R., & Peralta-Zamora, P. (2020) · Physical Chemistry Chemical Physics · doi:10.1039/d0cp02411b · Cited by 466
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Metadata
- Authors
- Berr, M. J., Wagner, P., Fischbach, S., Vaneski, A., Schneider, J., Susha, A. S., Rogach, A. L., Jäckel, F., & Feldmann, J.
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 2012-05-28
- Volume
- 100
- Issue
- 22
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W2019496751
- Cited by
- 234
- References
- 1
- FWCI
- 3.89
- Type
- journal article
- Language
- en
- Open access
- closed
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- The paper
- Berr, M. J., Wagner, P., Fischbach, S., Vaneski, A., Schneider, J., Susha, A. S., Rogach, A. L., Jäckel, F., & Feldmann, J. (2012). Hole scavenger redox potentials determine quantum efficiency and stability of Pt-decorated CdS nanorods for photocatalytic hydrogen generation. Applied Physics Letters. https://doi.org/10.1063/1.4723575
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