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

Jingya Guo, Chongbei Wu, Jifang Zhang, Puxuan Yan, Jianniao Tian, Xingcan Shen, Tayirjan T. Isimjan, Xiulin Yang

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

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.
Original languageEnglish (US)
Pages (from-to)8865-8872
Number of pages8
JournalJournal of Materials Chemistry A
Volume7
Issue number15
DOIs
StatePublished - 2019

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