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Fabrication of a non-semiconductor photocatalytic system using dendrite-like plasmonic CuNi bimetal combined with reduced graphene oxide nanosheet for near-infrared photocatalytic H2 evolution

Abstract

The field of photocatalytic hydrogen evolution has almost exclusively concentrated on semiconductor photocatalysts. However, non-semiconductor photocatalytic system has few reports due to few non-semiconductor catalysts and their poor photocatalytic ability. Herein, dendrite-like plasmonic CuNi bimetal was prepared by hydrothermal method, followed by modification with reduced graphene oxide (rGO) nanosheets to facilitate the separation of electron-hole pair and improve the photocatalytic H2 evolution rate. Electron-hole pair originates from surface plasmon resonance (SPR) effect of Cu in CuNi bimetal. Importantly, a near-infrared photocatalytic activity was confirmed with monochromatic light irradiation at the wavelength of 800 and 900 nm in the photocatalytic system due to the broad spectrum response of plasmonic Cu. In addition, this photocatalyst exhibited favorable stability and repeatability in five consecutive runs of accumulatively 30 h. This study provides a new and significant approach for the development of non-semiconductor photocatalytic system, which could effectively broaden the scope of photocatalyst field.

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Publication details

The article was received on 28 Jul 2017, accepted on 25 Sep 2017 and first published on 26 Sep 2017


Article type: Paper
DOI: 10.1039/C7TA06625B
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    Fabrication of a non-semiconductor photocatalytic system using dendrite-like plasmonic CuNi bimetal combined with reduced graphene oxide nanosheet for near-infrared photocatalytic H2 evolution

    P. Zhang, T. Song, T. Wang and H. Zeng, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA06625B

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