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Issue 7, 2019
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Green synthesis of ultrathin edge-activated foam-like carbon nitride nanosheets for enhanced photocatalytic performance under visible light irradiation

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Abstract

Fabrication of few-layered polymeric carbon nitride (PCN) photocatalysts have attracted increasing attention owing to their substantial enhancement of the photocatalytic performance. A green strategy for the synthesis of ultrathin PCN nanosheets with integration of high-efficiency and enriched active edges using minimimal chemicals and energy input is overwhelmingly required and is still challenging. Herein, we report a green, cost-effective and template-free synthesis approach for ultrathin foam-like PCN nanosheets with enriched active sites in a wet atmosphere via a “three-in-one” strategy. This strategy relies on coupling of melem segments, polymerization with condensed layers, delamination by water molecules, and introduction of new terminal groups entirely in one-pot without any other additives. The obtained melem-derived PCN (MFCN-wet) shows highly loose and extremely light characteristics with the formation of ultrathin few-layers. Furthermore, it exhibits a high specific surface area and pore volume. Most importantly, the enriched active sites with fast charge carrier transfer drastically enhance the hydrogen evolution rate and rhodamine B (RhB) degradation with a high stability under visible light irradiation, compared with that of the as-synthesized materials in nitrogen and air atmospheres. This sustainable strategy could provide new opportunities for further environmental and energy applications.

Graphical abstract: Green synthesis of ultrathin edge-activated foam-like carbon nitride nanosheets for enhanced photocatalytic performance under visible light irradiation

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Publication details

The article was received on 27 Apr 2019, accepted on 06 May 2019 and first published on 14 May 2019


Article type: Paper
DOI: 10.1039/C9SE00263D
Sustainable Energy Fuels, 2019,3, 1764-1775

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    Green synthesis of ultrathin edge-activated foam-like carbon nitride nanosheets for enhanced photocatalytic performance under visible light irradiation

    I. A. Abdelhafeez, Q. Yao, C. Wang, Y. Su, X. Zhou and Y. Zhang, Sustainable Energy Fuels, 2019, 3, 1764
    DOI: 10.1039/C9SE00263D

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