Preparation of platinum-decorated porous graphite nanofibers, and their hydrogen storage behaviors |
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Authors: | Kim Byung-Joo Lee Young-Seak Park Soo-Jin |
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Affiliation: | Department of Green Chemistry & Environmental Biotechnology, University of Science & Technology, P.O. Box 107, Yuseong, Daejeon 305-600, South Korea. |
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Abstract: | In this work, the hydrogen storage behaviors of porous graphite nanofibers (GNFs) decorated by Pt nanoparticles were investigated. The Pt nanoparticles were introduced onto the GNF surfaces using a well-known chemical reduction method. We investigated the hydrogen storage capacity of the Pt-doped GNFs for the platinum content range of 1.3-7.5 mass%. The microstructure of the Pt/porous GNFs was characterized by X-ray diffraction and transmission electron microscopy. The hydrogen storage behaviors of the Pt/GNFs were studied using a PCT apparatus at 298 K and 10 MPa. It was found that amount of hydrogen stored increased with increasing Pt content to 3.4 mass%, and then decreased. This result indicates that the hydrogen storage capacity of porous carbons is based on both their metal content and dispersion rate. |
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