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Issue 39, 2018
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Well dispersed MoC quantum dots in ultrathin carbon films as efficient co-catalysts for photocatalytic H2 evolution

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Abstract

As a promising alternative to Pt, molybdenum carbides have been widely used in many domains. Herein, we develop a co-catalyst with a 2D lamellar structure, in which MoC quantum dots are embedded in a carbon membrane uniformly (MoC-QDs/C). With the introduction of MoC-QDs/C, the flower-like MoC-QDs/C/ZnIn2S4 composite shows an unprecedented enhancement of photocatalytic performance, compared with that of pure ZnIn2S4. The optimal hydrogen generation rate of MoC-QDs/C/ZnIn2S4 is almost 48 times as much as that of pure ZnIn2S4. Besides, the enhancement mechanism is also demonstrated that MoC-QDs/C can accelerate carriers' separation and decrease the overpotential of hydrogen evolution effectively during the photocatalytic water splitting process. Moreover, this study not only provides a high-efficiency and potential co-catalyst for photocatalytic H2 production, but also is expected to come up with a new design scheme for a transition metal carbide-containing co-catalyst.

Graphical abstract: Well dispersed MoC quantum dots in ultrathin carbon films as efficient co-catalysts for photocatalytic H2 evolution

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Publication details

The article was received on 23 Jun 2018, accepted on 06 Sep 2018 and first published on 10 Sep 2018


Article type: Paper
DOI: 10.1039/C8TA06029K
Citation: J. Mater. Chem. A, 2018,6, 18979-18986
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    Well dispersed MoC quantum dots in ultrathin carbon films as efficient co-catalysts for photocatalytic H2 evolution

    F. Gao, Y. Zhao, L. Zhang, B. Wang, Y. Wang, X. Huang, K. Wang, W. Feng and P. Liu, J. Mater. Chem. A, 2018, 6, 18979
    DOI: 10.1039/C8TA06029K

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