Magnetic dendritic KCC-1 nanosphere-supported cobalt composite as a separable catalyst for hydrogen generation from NaBH4 hydrolysis |
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| Affiliation: | 1. College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu, 610059, China;2. Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institution, Chengdu University of Technology, Chengdu, 610059, China;1. Institute of Modern Physics, Fudan University, Shanghai, 200433, China;2. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, China;1. School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo, 255000, China;2. State Key Laboratory of Engines, Tianjin University, Tianjin, 3000072, China;1. School of Materials Science and Engineering, Institute of New Energy Material Chemistry, Nankai University, Tianjin, 300350, PR China;2. College of Electronics Information and Optical Engineering, Nankai University, Tianjin, 300350, PR China;3. Computational Science Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea;1. Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072 China;2. Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China;3. School of Environmental Sciences and Engineering, Tianjin University, Tianjin 300072 China |
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| Abstract: | The introduction of magnetism into a catalyst can greatly optimize its separation performance. In the present work, a kind of magnetically separable catalysts for promoting NaBH4 hydrolysis have been fabricated by anchoring cobalt nanoparticles on magnetic dendritic KCC-1 nanospheres composed of magnetic Fe3O4 core and fibrous shell. The fabricated catalysts were characterized with various characterization methods, including absorption spectroscopy (AAS), scanning electron microscopy (SEM), high-resolution transmission electronic microscopy (HRTEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), vibrating sample magnetometry (VSM), and Fourier transform infrared (FT-IR), etc. This kind of catalysts exhibit high catalytic activity for promoting the hydrolysis of NaBH4 under alkaline conditions, giving a hydrogen generation rate and activation energy of 3.83 L min−1 gCo−1 (30 °C) and 53.63 kJ mol−1, respectively. After used for 5 cycles, the catalyst showed 36.5% catalytic activity reserved. Most importantly, the magnetism of the catalyst made it easily separated and recycled from the solution after the reaction completed. The development of this kind of catalysts could provide a promising option for catalyzing NaBH4 hydrolysis for portable hydrogen production from. |
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| Keywords: | Magnetic catalyst Hydrogen generation Cobalt KCC-1 |
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