Superior hydrogen generation from sodium borohydride hydrolysis catalyzed by the bimetallic Co–Ru/C nanocomposite |
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| Authors: | Wenkai Huang Fuhua Xu Xiang Liu |
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| Affiliation: | College of Materials and Chemical Engineering, The Engineering Research Center of Eco-environment in Three Gorges Reservoir Region, Ministry of Education, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, Hubei, 443002, China |
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| Abstract: | Sodium borohydride has been widely regarded as a promising hydrogen carrier owing to its greatly hydrogen storing capability (10.8 wt%), high weight density and excellent stability in alkaline solutions. Herein, we first design and synthesize a series of bimetallic M-Ru/C nanocomposites (including Fe–Ru/C, Co–Ru/C, Ni–Ru/C and Cu–Ru/C), via simply alloying of commercial Ru/C with nonprecious metal, for superior H2 evolution from the NaBH4 hydrolysis. The result exhibits that H2 generation is synergetically improved by alloying Ru/C with Co or Ni, while it is hindered by alloying Ru/C with Fe or Cu. Indeed, Co–Ru/C presents the highest efficient catalytic activity for H2 generation, with the TOF of 117.69 mol(H2)·molRu?1·min?1, whereas Ru/C is only 57.08 mol(H2)·molRu?1·min?1. In addition, the TOF of Co–Ru/C reaches to 436.51 mol(H2)·molRu?1·min?1 (96.7 L(H2)·gRu?1·min?1) in the presence of NaOH. |
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| Keywords: | Sodium borohydride Hydrogen Co–Ru/C Bimetallic Hydrolysis |
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