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Issue 45, 2013
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Surface hydrogen bonding can enhance photocatalytic H2 evolution efficiency

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Abstract

Hydrogen bonding (H-bond) interactions have been regarded as a topic of vital scientific research in areas ranging from inorganic to biological chemistry. However, the application and elucidation of surface H-bond functionalized photocatalysts and the alteration of the character of the photocatalyst itself have not been paid sufficient attention. Here we show the high efficiency of visible-light-driven photocatalytic H2 production, achieved by using a surface H-bonding network decorated g-C3N4 photocatalyst. The hydrated g-C3N4 was designed and synthesized by a facile surface treatment in a slightly alkaline environment. According to NMR and theoretical modeling, the H-bonding bridge can effectively shorten the distance between water molecules and g-C3N4, provide multiple channels for the transition between protons and the excited electrons on g-C3N4, stabilize the anionic intermediate and transition states, and restrain charge recombination. The present result opens new opportunities towards a potential approach to designing a new generation of photocatalyst systems.

Graphical abstract: Surface hydrogen bonding can enhance photocatalytic H2 evolution efficiency

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Publication details

The article was received on 22 Aug 2013, accepted on 21 Sep 2013 and first published on 23 Sep 2013


Article type: Paper
DOI: 10.1039/C3TA13328A
Citation: J. Mater. Chem. A, 2013,1, 14089-14096
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    Surface hydrogen bonding can enhance photocatalytic H2 evolution efficiency

    X. L. Wang, W. Q. Fang, H. F. Wang, H. Zhang, H. Zhao, Y. Yao and H. G. Yang, J. Mater. Chem. A, 2013, 1, 14089
    DOI: 10.1039/C3TA13328A

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