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Hierarchically structured rugae-like RuP3–CoP arrays as robust catalysts synergistically promoting hydrogen generation

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Abstract

Designing a highly active and stable catalyst for NaBH4 hydrolysis is a key step towards overcoming the challenges of hydrogen storage. Herein, we have developed a controllable strategy to fabricate a series of hierarchically structured cobalt-ruthenium-phosphide arrays on nickel foam (Co–Ru–P@NF) as a highly efficient and stable catalyst for hydrogen generation from NaBH4 hydrolysis in alkaline media. SEM and TEM analyses show that the interconnected rugae-like Co–Ru–P arrays are vertically grown on the surface of Ni foam, together with uniformly distributed RuP3 nanoclusters on the surface of CoP nanosheets. More importantly, the optimized Co–Ru–P@NF catalyst exhibits an outstanding catalytic performance on NaBH4 hydrolysis in alkaline media with a high turnover frequency (TOF) of 2123.6 molH2 min−1 molRu−1 at 25 °C, which is one of the highest known so far. Furthermore, the exceptional catalytic performance is in line with the outcome of low activation energy (40.3 kJ mol−1). Additionally, the catalyst also shows a high stability with less than 8.0% lost after 5 consecutive cycles. The superior catalytic performance is ascribed to the synergetic effect between RuP3 and CoP species resulting in a significant electron transfer effect, together with the unique morphologies associated with a large specific surface area and open-channels for effective solute transport/adsorption and H2 gas emissions.

Graphical abstract: Hierarchically structured rugae-like RuP3–CoP arrays as robust catalysts synergistically promoting hydrogen generation

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Publication details

The article was received on 06 Nov 2018, accepted on 14 Jan 2019 and first published on 15 Jan 2019


Article type: Paper
DOI: 10.1039/C8TA10695A
Citation: J. Mater. Chem. A, 2019, Advance Article

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    Hierarchically structured rugae-like RuP3–CoP arrays as robust catalysts synergistically promoting hydrogen generation

    J. Guo, C. Wu, J. Zhang, P. Yan, J. Tian, X. Shen, T. T. Isimjan and X. Yang, J. Mater. Chem. A, 2019, Advance Article , DOI: 10.1039/C8TA10695A

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