Stabilized cobalt-based nanofilm catalyst prepared using an ionic liquid/water interfacial process for hydrogen generation from sodium borohydride
| Autor: | Shuyan Guan, Yanping Fan, Yumei Chen, Lulu An, Xianyun Liu, Mingbin Li, Baozhong Liu, Baojun Li, Jianchao Shi |
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| Rok vydání: | 2022 |
| Předmět: |
Materials science
chemistry.chemical_element Surfaces Coatings and Films Electronic Optical and Magnetic Materials Catalysis Biomaterials chemistry.chemical_compound Sodium borohydride Hydrolysis Colloid and Surface Chemistry chemistry Chemical engineering Transition metal Ionic liquid Cobalt Liquid hydrogen Hydrogen production |
| Zdroj: | Journal of Colloid and Interface Science. 608:3111-3120 |
| ISSN: | 0021-9797 |
| DOI: | 10.1016/j.jcis.2021.11.041 |
| Popis: | The design and construction of transition metal catalysts with high performance and low-cost characteristics are imperative for liquid hydrogen storage materials. In this study, we prepared ultrathin carbon-stabilized Co-doped CoxOy nanofilms (C–Co/CoxOy NFs) using an ionic liquid/water interface strategy for sodium borohydride (NaBH4) hydrolysis. Owing to its two-dimensional (2D) NF structure and the protective effects of the composite carbon, the C–Co/CoxOy NF catalyst exhibited remarkable activity and durability for hydrogen generation from NaBH4 hydrolysis. The hydrogen generation rate reached 8055 mL·min−1·gCo−1 (5106 mL·min−1·gCat−1) and the catalyst could be recycled more than 20 times, surpassing most reported metal-based catalysts under comparable conditions. In addition, the exceptional 2D Co-based NF structures, with numerous active sites, assisted in the activation of NaBH4 and water molecules, promoting hydrogen production. Thus, these results provided an in-depth understanding of hydrogen generation from NaBH4 hydrolysis, and an effective strategy for rationally designing highly active and durable 2D NF catalysts. |
| Databáze: | OpenAIRE |
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