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Issue 19, 2017
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Directional electron delivery via a vertical channel between g-C3N4 layers promotes photocatalytic efficiency

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Abstract

Suffering from inefficient charge separation and random charge transfer between its planes, the photocatalytic efficiency of g-C3N4 is still unsatisfactory. Herein, this challenging issue is tackled via intercalating alkalis into the interlayer space in g-C3N4 to create a vertical channel between the layers for directional electron delivery, which is a novel strategy to effectively quench charge recombination and promote electron transfer. Using a close combination of theoretical and experimental methods, the alkalis intercalated in g-C3N4 have been designed and fabricated. The alkali species could suppress random charge transfer between the planes of g-C3N4 and enable the electrons to directionally migrate between adjacent layers in a one-way transmission manner. In an unprecedented result, the photocatalytic efficiency of g-C3N4 is significantly improved by 115.0% via alkali intercalation and it is also stable for recycled usage. This work could provide a feasible protocol for the modification of a wide range of 2D materials, and shed new light on the understanding of photocatalytic mechanisms.

Graphical abstract: Directional electron delivery via a vertical channel between g-C3N4 layers promotes photocatalytic efficiency

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Publication details

The article was received on 11 Mar 2017, accepted on 17 Apr 2017 and first published on 17 Apr 2017


Article type: Paper
DOI: 10.1039/C7TA02183F
Citation: J. Mater. Chem. A, 2017,5, 9358-9364
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    Directional electron delivery via a vertical channel between g-C3N4 layers promotes photocatalytic efficiency

    J. Li, W. Cui, Y. Sun, Y. Chu, W. Cen and F. Dong, J. Mater. Chem. A, 2017, 5, 9358
    DOI: 10.1039/C7TA02183F

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