| INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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| Nitrogen-doped Carbon Shell-encapsulated Ru/Co-MOF-74 Catalyst for Enhanced Hydrogen Production via Sodium Borohydride Hydrolysis |
| WANG Yijie, SUN Lixian*, XU Fen*, PENG Xuan, WANG Hehui, ZHAO Zhongxian, SU Yanming
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| Guangxi Key Laboratory of Information Materials & Guangxi Collaborative Innovation Center for Structure and Properties for New Energy and Materials, School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, Guangxi, China |
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Abstract Hydrogen energy, with its zero-carbon emissions, is a critical solution to address fossil fuel dependence and environmental pollution. Sodium borohydride (NaBH4), renowned for its high hydrogen content (10.8%) and chemical stability, offers a promising approach for hydrogen storage and transportation, particularly for portable fuel cells and emergency hydrogen sources. However, its sluggish room-temperature hydrolysis reaction necessitates the development of efficient catalysts to enhance hydrogen generation rate (HGR). In this study, a nitrogen-doped carbon-coated Ru/Co-MOF-74 composite catalyst (Ru/Co-MOF-74-NC) was synthesized via a solvothermal method combined with polydopamine-derived carbon coating. This core-shell structure, coupled with Ru-Co synergistic effects and nitrogen-doped carbon encapsulation, significantly improved the catalytic performance of NaBH4 hydrolysis. The results showed that under the catalytic action of Ru/Co-MOF-74-NC at 303 K, the HGR reached 6 354.2 mL·min-1·g-1, with the activation energy reduced to 32.1 kJ·mol-1 due to the synergistic interaction between Ru and Co. Notably, the nitrogen-doped carbon layer effectively suppressed Ru nanoparticle agglomeration and leaching, enhancing catalytic stability. After 8 cycles, the catalyst retained 79.3% of its initial activity, demonstrating its robustness for practical applications. This work provides a novel strategy for designing high-performance catalysts for hydrogen storage systems.
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Received: 10 May 2026
Published:
Online: 2026-05-18
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