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Ruthenium nanoparticles supported on nitrogen-doped porous carbon as a highly efficient catalyst for hydrogen evolution from ammonia borane

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Abstract

As one of the cleanest energy sources of the future, hydrogen has been extensively studied, particularly its production and storage. In this work, we prepared a nitrogen-doped porous carbon material (NC-Fe) via the facile pyrolysis of a porous organic polymer (POP). The as-prepared NC-Fe material was then modified with small ruthenium nanoparticles (Ru NPs), obtaining a Ru/NC-Fe catalyst for efficient catalytic hydrogen generation from ammonia borane (AB). The prepared catalyst was characterized in detail by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), nitrogen absorption–desorption measurements and X-ray photoelectron spectroscopy (XPS). The small Ru NPs were highly grafted on the surface of the NC-Fe support. In the catalytic hydrolysis of AB, the Ru/NC-Fe catalyst shows superior catalytic activity, with a high turnover frequency of 102.9 molH2 min−1 molRu−1 and a low activation energy of 47.42 kJ mol−1, compared with many other reported catalysts. This is mainly attributed to the highly dispersed Ru NPs on the NC-Fe surface, which provided abundant accessible active sites. Furthermore, the Ru/NC-Fe catalyst also exhibits excellent magnetic recyclability and can be reused for at least five cycles. Thus, this work provides a useful strategy for the fabrication of POP material-derived catalysts for various catalysis applications.

Graphical abstract: Ruthenium nanoparticles supported on nitrogen-doped porous carbon as a highly efficient catalyst for hydrogen evolution from ammonia borane

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Publication details

The article was received on 13 Dec 2018, accepted on 28 Jan 2019 and first published on 29 Jan 2019


Article type: Paper
DOI: 10.1039/C8NJ06296J
Citation: New J. Chem., 2019, Advance Article

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    Ruthenium nanoparticles supported on nitrogen-doped porous carbon as a highly efficient catalyst for hydrogen evolution from ammonia borane

    Z. Cui, Y. Guo, Z. Feng, D. Xu and J. Ma, New J. Chem., 2019, Advance Article , DOI: 10.1039/C8NJ06296J

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