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Issue 3, 2018
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Engineering oxygen-containing and amino groups into two-dimensional atomically-thin porous polymeric carbon nitrogen for enhanced photocatalytic hydrogen production

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Abstract

Polymeric carbon nitride (PCN) is a promising earth-abundant photocatalyst for solar energy conversion. However, the photocatalytic activities of PCN-based materials remain moderate because of their poor dispersion in water and their fast electron–hole recombination. Here, a facile two-step continuous thermal treatment strategy is presented to endow the bulk PCN nanosheets with an atomically-thin structure, strong hydrophilicity and Lewis basicity to dramatically enhance the photocatalytic hydrogen (H2) generation performance. The formation of the oxygen-containing and amino groups in the atomically-thin PCN sheets improves the charge separation and provides rich active sites for the surface reaction. Such synergistic effects lead to a superior visible-light-driven photocatalytic activity and its H2 evolution rate (1233.5 μmol h−1 g−1) is more than 11 times higher than the bulk PCN using Ni as a cocatalyst. Additionally, the H2 evolution rate can reach 20948.6 μmol h−1 g−1 using Pt as a cocatalyst under AM1.5G solar irradiation.

Graphical abstract: Engineering oxygen-containing and amino groups into two-dimensional atomically-thin porous polymeric carbon nitrogen for enhanced photocatalytic hydrogen production

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Publication details

The article was received on 20 Dec 2017, accepted on 22 Jan 2018 and first published on 22 Jan 2018


Article type: Communication
DOI: 10.1039/C7EE03592F
Citation: Energy Environ. Sci., 2018,11, 566-571
  • Open access: Creative Commons BY-NC license
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    Engineering oxygen-containing and amino groups into two-dimensional atomically-thin porous polymeric carbon nitrogen for enhanced photocatalytic hydrogen production

    N. Meng, J. Ren, Y. Liu, Y. Huang, T. Petit and B. Zhang, Energy Environ. Sci., 2018, 11, 566
    DOI: 10.1039/C7EE03592F

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