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Niobium Oxide Nanoscrolls as Building Blocks for Dye-Sensitized Hydrogen Production from Water under Visible Light Irradiation
Abstract
Potassium hexaniobate nanoscrolls (NS-K 4 Nb 6 O 17 ) formed by exfoliation of lamellar K 4 Nb 6 O 17 were studied as building blocks for visible-light-driven H 2 production (λ > 420 nm) from water using tris(2,2′-bipyridyl)ruthenium(II) chloride (Ru(bpy) 3 2+ ) as a sensitizer and ethylenediaminetetraacetic acid (EDTA) as an electron donor. The surface of NS-K 4 Nb 6 O 17 is negatively charged at pH 3−11, enabling cationic Ru(bpy) 3 2+ molecules to be efficiently adsorbed onto the surface, allowing for rapid excited-state electron and subsequent H 2 evolution without any chemical bond linkage between the sensitizer and the oxide surface. The rate of visible light H 2 production in the nanoscroll-based system is 10 times higher than that of similarly sensitized K 4 Nb 6 O 17 . The difference can be primarily attributed to the strong adsorption of Ru(bpy) 3 2+ in the case of the nanoscrolls. The maximum photocatalytic reactivity is found over a narrow range of pH and Pt-loading. This study highlights the utility of single-crystalline oxide nanosheets as components of photosystems for visible-light-driven H 2 production from water.
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Cited by
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Chen, X., Shen, S., Guo, L., & Mao, S. S. (2010) · Chemical Reviews · doi:10.1021/cr1001645 · Cited by 7,876
Progress, challenge and perspective of heterogeneous photocatalysts
Qu, Y., & Duan, X. (2013) · Chem. Soc. Rev. · doi:10.1039/c2cs35355e · Cited by 1,466
Nanostructured materials for photocatalytic hydrogen production
Zhu, J., & Zäch, M. (2009) · Current Opinion in Colloid & Interface Science · doi:10.1016/j.cocis.2009.05.003 · Cited by 406
Min, S., & Lu, G. (2012) · The Journal of Physical Chemistry C · doi:10.1021/jp304022f · Cited by 304
Metadata
- Authors
- Maeda, K., Eguchi, M., Youngblood, W. J., & Mallouk, T. E.
- Venue
- Chemistry of Materials
- Publisher
- American Chemical Society (ACS)
- Published
- 2008-10-02
- Volume
- 20
- Issue
- 21
- Pages
- 6770-6778
- ISSN
- 0897-4756 (ISSN-L)
- 1520-5002
- OpenAlex
- W1985823243
- Cited by
- 189
- References
- 0
- FWCI
- 7.36
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Niobium Oxide Nanoscrolls as Building Blocks for Dye-Sensitized Hydrogen Production from Water under Visible Light Irradiation. https://app.cochat.ai/papers/10.1021/cm801807b
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- Maeda, K., Eguchi, M., Youngblood, W. J., & Mallouk, T. E. (2008). Niobium Oxide Nanoscrolls as Building Blocks for Dye-Sensitized Hydrogen Production from Water under Visible Light Irradiation. Chemistry of Materials. https://doi.org/10.1021/cm801807b
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