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Dye-Sensitized Reduced Graphene Oxide Photocatalysts for Highly Efficient Visible-Light-Driven Water Reduction
Abstract
This article presents a novel dye-sensitized photocatalysis system for photochemical energy conversion by employing reduced graphene oxide (RGO) as a catalyst scaffold and an efficient electron relay mediator between photosensitizer and catalyst. Under visible light irradiation (λ ≥ 420 nm), the photocatalyst of Eosin Y sensitized RGO with dispersed Pt nanoparticles exhibits highly efficient activity for hydrogen evolution from water reduction. The highest apparent quantum yield up to 9.3% for hydrogen evolution has been achieved at 520 nm over this photocatalyst. The excellent electron-accepting and electron-transporting properties of RGO greatly facilitate the electrons transfer from excited dye to Pt catalyst, which promotes the photocatalytic activity for hydrogen evolution. This is a first example of RGO participation in visible-light-driven water reduction for H 2 generation in a dye-photosensitized system; a possible mechanism was proposed on the basis of the results of photoelectrochemical and photoluminescence measurements.
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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
Lightcap, I. V., Kosel, T. H., & Kamat, P. V. (2010) · Nano Letters · doi:10.1021/nl9035109 · Cited by 1,044
Cited by
Graphene-based semiconductor photocatalysts
Xiang, Q., Yu, J., & Jaroniec, M. (2012) · Chem. Soc. Rev. · doi:10.1039/c1cs15172j · Cited by 2,730
Kampouri, S., & Stylianou, K. C. (2019) · ACS Catalysis · doi:10.1021/acscatal.9b00332 · Cited by 298
Visible Photocatalytic Activity Enhancement of ZnWO4 by Graphene Hybridization
Bai, X., Wang, L., & Zhu, Y. (2012) · ACS Catalysis · doi:10.1021/cs3005852 · Cited by 283
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
- Min, S., & Lu, G.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2011-06-27
- Volume
- 115
- Issue
- 28
- Pages
- 13938-13945
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W2312661723
- Cited by
- 289
- References
- 2
- FWCI
- 9.33
- Type
- journal article
- Language
- en
- Open access
- closed
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