Enhanced hydrogen storage capacity of Pt-loaded CNT@MOF-5 hybrid composites
✍ Scribed by Seung Jae Yang; Jung Hyun Cho; Kee Suk Nahm; Chong Rae Park
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 939 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0360-3199
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✦ Synopsis
We report on an easy synthesis method for the preparation of a hybrid composite of Pt-loaded MWCNTs@MOF-5 [Zn 4 O(benzene-1,4-dicarboxylate) 3 ] that greatly enhanced hydrogen storage capacity at room temperature. To prepare the composite, we first prepared Pt-loaded MWCNTs, which were then incorporated in-situ into the MOF-5 crystals. The obtained composite was characterized by various techniques such as powder X-ray diffractometry, optical microscopy, porosimetry by nitrogen adsorption, and hydrogen adsorption. The analyses confirmed that the product has a highly crystalline structure with a Langmuir specific surface area of over 2000 m 2 /g. The hybrid composite was shown to have a hydrogen storage capacity of 1.25 wt% at room temperature and 100 bar, and 1.89 wt% at cryogenic temperature and 1 bar. These H 2 storage capacities represent significant increases over those of virgin MOF-5s and Pt-loaded MWCNTs.