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Issue 39, 2018
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The study of a novel cobalt-implanted pyridylporphyrin/graphene oxide nanohybrid for enhanced photocatalytic hydrogen evolution and its electron transfer mechanism

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Abstract

A metallic cobalt nanoparticle-implanted 5,15-diphenyl-10,20-di(4-pyridyl) porphyrin (DPyP)/graphene oxide (GO) nanohybrid (GO-Co-DPyP) was facilely fabricated. By means of XPS, XRD, Raman spectroscopy and UV-vis spectroscopy, it was demonstrated that on implanting metallic cobalt nanoparticles (Co NPs) in the GO, stronger interaction between GO and DPyP can be achieved, which enlarged the included angle between DPyP and GO. The nanohybrid was benifical for light absorption and photo-induced electron transfer. Furthermore, photocatalytic activity for hydrogen evolution over the nanohybrid was investigated. We found that higher activity over the GO-Co-DPyP nanohybrid was obtained, which was about two times higher than that of Co2+ implanted in the GO (GO-Co2+-DPyP). Combined with the results of fluorescence spectra and photoelectronic spectra, the electron transfer mechanism for hydrogen evolution was clarified. This study will provide some theoretical and experimental basis for the assembly and photocatalytic performance of GO-based composites by interfacial modification.

Graphical abstract: The study of a novel cobalt-implanted pyridylporphyrin/graphene oxide nanohybrid for enhanced photocatalytic hydrogen evolution and its electron transfer mechanism

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Publication details

The article was received on 31 Jul 2018, accepted on 09 Sep 2018 and first published on 13 Sep 2018


Article type: Paper
DOI: 10.1039/C8NR06138F
Citation: Nanoscale, 2018,10, 18635-18641
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    The study of a novel cobalt-implanted pyridylporphyrin/graphene oxide nanohybrid for enhanced photocatalytic hydrogen evolution and its electron transfer mechanism

    K. Zhu, Q. Luo, S. Kang, L. Qin, G. Li and X. Li, Nanoscale, 2018, 10, 18635
    DOI: 10.1039/C8NR06138F

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