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Issue 7, 2013
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Water-soluble sulfonated–graphene–platinum nanocomposites: facile photochemical preparation with enhanced catalytic activity for hydrogen photogeneration

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Abstract

By using sulfonated graphene as a support for the platinum (Pt) cocatalyst, a new water-soluble composite (GSO3Pt) characteristic of small-sized and “clean” Pt nanoparticles on graphene was prepared by a facile photoreduction method, in which Hantzsch 1,4-dihydropyridine (HEH) was used as a reductant. The photocatalytic system, containing eosin Y (EY) as a sensitizer, GSO3Pt as a catalyst, and TEOA as a sacrificial electron donor, exhibited an 18 times increase in hydrogen (H2) production compared to when colloidal Pt rather than GSO3Pt was used to conduct the same photocatalytic reaction. The higher turnover number (TON), up to 6410 ± 770 based on platinum, is attributed to the efficient forward electron-transfer mediated by graphene, which was clearly verified for the first time by using the unique spectroscopic property of EY.

Graphical abstract: Water-soluble sulfonated–graphene–platinum nanocomposites: facile photochemical preparation with enhanced catalytic activity for hydrogen photogeneration

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Publication details

The article was received on 11 Feb 2013, accepted on 25 Mar 2013 and first published on 26 Mar 2013


Article type: Paper
DOI: 10.1039/C3CY00098B
Citation: Catal. Sci. Technol., 2013,3, 1815-1821
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    Water-soluble sulfonated–graphene–platinum nanocomposites: facile photochemical preparation with enhanced catalytic activity for hydrogen photogeneration

    H. Zhang, K. Feng, B. Chen, Q. Meng, Z. Li, C. Tung and L. Wu, Catal. Sci. Technol., 2013, 3, 1815
    DOI: 10.1039/C3CY00098B

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