Journal
INORGANIC CHEMISTRY COMMUNICATIONS
Volume 54, Issue -, Pages 54-56Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.inoche.2015.02.001
Keywords
Hydrogen storage; MOFs; Graphene oxide; Platinum; Impregnation
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Funding
- National Natural Science Foundation [51072072, 51102119, 51272095]
- Natural Science Foundation of Jiangsu Province [BK2011518]
- Qing Lan Project of Jiangsu Province, China Postdoctoral Science Foundation [2014M561578]
- Jiangsu Planned Projects for Postdoctoral Research Funds [1401109C]
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Pt-doped MOF/graphene oxide (GO) composites were synthesized via a colloidal Pt nanoparticle (NP) incipient-wetness impregnation method for the first time. The composites Pt@HKUST-1/GO and Pt@ZIF-8/GO were characterized by X-ray diffraction, electron microscopy and gas adsorption. The hydrogen uptakes of both composites at 298 K and 860 mm Hg were enhanced by a factor of 3.6 or 4.1 compared to MOFs, although Pt NPs were obviously aggregated throughout MOF/GO networks. This significant enhancement is mainly attributed to the combination of high porosities of MOF/GO supports and hydrogen spillover mechanism, in which Pt NPs and MOF/GO act as dissociation source and receptor, respectively. (C) 2015 Elsevier B.V. All rights reserved.
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