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One-step solvothermal fabrication of Cu@PANI core–shell nanospheres for hydrogen evolution

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Abstract

Polyaniline(PANI)-decorated Cu nanoparticles were prepared by a facile solvothermal method. Different reaction temperatures resulted in different morphologies of the Cu/PANI composites, which exhibited good photocatalytic activities. When the mass ratio of PANI increased to 2.5 wt%, the H2 evolution rate reached 1.97 mmol g−1 h−1 in lactic acid solution under solar light irradiation, which is about 2 times higher than that of pure Cu nanoparticles (1.06 mmol g−1 h−1). The introduction of PANI can improve the separation efficiency of the photo-generated electron–hole pairs, where PANI acts as a hole reservoir for trapping holes generated by the Cu NPs and hindering the recombination of the electron–hole pairs. A possible mechanism is presented to explain the photocatalytic process using Cu@PANI core–shell nanospheres as the photocatalyst.

Graphical abstract: One-step solvothermal fabrication of Cu@PANI core–shell nanospheres for hydrogen evolution

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Publication details

The article was received on 03 Aug 2018, accepted on 25 Oct 2018 and first published on 26 Oct 2018


Article type: Paper
DOI: 10.1039/C8NR06245E
Citation: Nanoscale, 2018, Advance Article
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    One-step solvothermal fabrication of Cu@PANI core–shell nanospheres for hydrogen evolution

    T. Wang, D. Wu, Y. Wang, T. Huang, G. Histand, T. Wang and H. Zeng, Nanoscale, 2018, Advance Article , DOI: 10.1039/C8NR06245E

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