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A facile self-template and carbonization strategy to fabricate nickel nanoparticles supported N-doped carbon microtubes

Abstract

The efficient preparation of non-precious metal nanocatalysts embedded in carbon nano/microtubes remains a considerable challenge. Herein, we report a facile self-template and carbonization strategy to fabricate nickel nanoparticles (NPs) supported N-doped carbon microtubes. Firstly, molybdenum trioxide (a-MoO3) microrods are coated with polypyrrole (MoO3@PPy) by a simple in situ polymerization route. Then, the PPy@PDA-Ni2+ microtubes with hollow structure are obtained by further coating the PDA-Ni2+ complex in ammonia solution. In contrast, the directly coating of MoO3 microrods by PDA-Ni2+ under the same experimental condition only lead to the aggregated PDA-Ni2+ spheres. Moreover, nickel/N-doped carbon microtubes (Ni/NCMTs) can be obtained by a further heating treatment and the highly graphitic carbons microtubes are achieved by etching the nickel nanoparticles. The hollow Ni/NCMTs exhibit excellent reduction activity on 4-nitrophenol (4-NP). Moreover, the size of Ni nanoparticals (Ni NPs) which can effectively control the catalytic performance of the as-prepared nanocomposites, are facilely adjusted via changing roasted temperature. Benefitting from the high exposed surface, short diffusion distance, and homogeneous Ni NPs dispersion, the Ni/NCMTs catalyst exhibits an improved activity on 4-NP. This novel structure is helpful for the further applications in hydrogen evolution reaction, supercapacitors and batteries.

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Publication details

The article was received on 17 Jan 2018, accepted on 29 Jan 2018 and first published on 29 Jan 2018


Article type: Research Article
DOI: 10.1039/C8QI00039E
Citation: Inorg. Chem. Front., 2018, Accepted Manuscript
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    A facile self-template and carbonization strategy to fabricate nickel nanoparticles supported N-doped carbon microtubes

    J. Wang, M. Zhang, T. Miao, Y. Ling, Q. Wen, J. Zheng, J. Xu, T. Hayat and N. S. Alharbi, Inorg. Chem. Front., 2018, Accepted Manuscript , DOI: 10.1039/C8QI00039E

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