Hydrogen production through hydrolysis of sodium borohydride: Highly dispersed CoB particles immobilized in carbon nanofibers as a novel catalyst |
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| Affiliation: | 1. School of Healthy, Siirt University, 56100, Siirt, Turkey;2. Arapgir Vocational School, Malatya Turgut Ozal University, Malatya, Turkey;1. Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science & Engineering, North China Electric Power University, Baoding 071000, China;2. Environmental Science Laboratory Centre, Department of Environmental Science, Jiamusi University, Jiamusi 154002, China;1. School of Materials and Chemical Engineering, Xi''an Technological University, Xi''an 710021, China;2. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi''an, 710072, China;1. School of Material Science & Engineering, Guilin University of Electronic Technology, Guilin, 541004, PR China;2. Guangxi Key Laboratory of Information Materials and Guangxi Collaborative Innovation Center of Structure and Property for New Energy and Materials, Guilin University of Electronic Technology, Guilin, 541004, PR China;3. Institut National de La Recherche Scientifique—Énergie, Matériaux et Télécommunications, 1650, Boulevard Lionel-Boulet, J3X 1S2, Varennes, QC, Canada, Trieste University;4. Department of Physical Chemistry, University of Rostock, 18059, Rostock, Germany;5. Faculty of Interdisciplinary Research, Competence Centre CALOR, University of Rostock, 18059, Rostock, Germany;6. Chemical Department, Samara State Technical University, 443100, Russia |
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| Abstract: | Agglomeration of CoB catalysts is a severe problem in hydrogen generation from NaBH4 hydrolysis. Herein, highly dispersed carbon nanofiber immobilized CoB catalysts (CoB/CN) were synthesized by a combined prereduction and carbonization method, which is used in hydrogen generation from NaBH4 hydrolysis. Morphological evolution of carbon nanofibers, phase structure and elemental distribution of CoB/CN catalysts are explored by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Compared to Co/carbon nanofiber catalysts (Co/CN) without prereduction, CoB/CN catalysts can afford higher CoB dispersity and specific surface area because the migration rate of cobalt species during carbonization is effectively retarded by prereduction. Hence the agglomeration of magnetic CoB nanoparticles can be effectively inhibited. The hydrogen generation experiment shows that CoB/CN catalysts process higher catalytic activity and lower activation energy than Co/CN. |
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| Keywords: | CoB Carbon nanofiber High dispersity Hydrogen production |
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