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Issue 19, 2018
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Enhanced photocatalytic hydrogen evolution over a heterojunction composed of silver cyanamide and graphitic carbon nitride

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Abstract

As photocatalysts, heterojunction materials have attracted much attention because of their capacity to integrate the promising performance of the individual components. Here, a series of heterojunction materials composed of silver cyanamide (Ag2NCN) and graphitic carbon nitride (g-C3N4) have been fabricated using a facile grinding method. Upon photoexcitation, the heterojunction materials exhibited enhanced photocatalytic activity in the hydrogen evolution reaction (322.35 μmol g−1 h−1), 82.87 and 117.65 times higher than that of the pristine Ag2NCN and g-C3N4, respectively. The photoelectrochemistry results revealed that the loading of Ag2NCN onto g-C3N4 could be favorable to the photogenerated charge separation and transfer in the heterojuction system. In addition, the spent heterojuction retained a better photocatalytic activity after 30 hours recycling. Furthermore, the excellent synergetic effect between Ag2NCN and g-C3N4 could achieve the effectively promoted separation of photogenerated electron–hole pairs, thus leading to the enhancement of photocatalytic performance under simulated sunlight illumination. This work could provide a general strategy to fabricate Ag-based materials on g-C3N4 photocatalysts with superior H2 evolution performance.

Graphical abstract: Enhanced photocatalytic hydrogen evolution over a heterojunction composed of silver cyanamide and graphitic carbon nitride

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Publication details

The article was received on 15 Jun 2018, accepted on 26 Aug 2018 and first published on 10 Sep 2018


Article type: Paper
DOI: 10.1039/C8NJ02991A
Citation: New J. Chem., 2018,42, 16005-16012
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    Enhanced photocatalytic hydrogen evolution over a heterojunction composed of silver cyanamide and graphitic carbon nitride

    C. Bai, J. Bi, J. Wu, Y. Han and X. Zhang, New J. Chem., 2018, 42, 16005
    DOI: 10.1039/C8NJ02991A

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