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Issue 45, 2019
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Visual observation of hydrogen bubble generation from monodisperse CoP QDs on ultrafine g-C3N4 fiber under visible light irradiation

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Abstract

Solar-driven hydrogen evolution reaction (HER) via water splitting is an attractive technology to address the growing demand for clean fuels. g-C3N4 is a promising candidate among photocatalysts, but it is plagued by its puny HER activity and miserly quantum efficiency. Tremendous efforts have been made to enhance g-C3N4 performance on HER; however, it is still far below the expectations in industrial production. Herein, we report a monodisperse CoP QDs-modified ultrafine g-C3N4 fiber (CoP/CNF) via in situ electrostatic adsorption deposition followed by low-temperature phosphatization treatment. The CoP/CNF showed an HER activity of 2.42 mmol h−1 under visible light, 34.9 times higher than that of Pt/CNF, in which hydrogen bubbles evolution was observed with an apparent quantum efficiency of 59.9% at 420 nm. This benchmark HER activity was mainly because the CoP QDs could significantly suppress photoinduced charge recombination and improve the heterointerface HER rate. This work provides a useful strategy for designing highly active catalysts for solar-to-hydrogen fuel conversion.

Graphical abstract: Visual observation of hydrogen bubble generation from monodisperse CoP QDs on ultrafine g-C3N4 fiber under visible light irradiation

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Publication details

The article was received on 08 Sep 2019, accepted on 22 Oct 2019 and first published on 22 Oct 2019


Article type: Paper
DOI: 10.1039/C9TA09897F
J. Mater. Chem. A, 2019,7, 25908-25914

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    Visual observation of hydrogen bubble generation from monodisperse CoP QDs on ultrafine g-C3N4 fiber under visible light irradiation

    Y. Zeng, Y. Xia, W. Song and S. Luo, J. Mater. Chem. A, 2019, 7, 25908
    DOI: 10.1039/C9TA09897F

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