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Moon, Hoi Ri
Functional Inorganic Nanomaterials Lab for Energy
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Investigation on the existence of optimum interlayer distance for H-2 uptake using pillared-graphene oxide

Author(s)
Kim, Byung HoonHong, Won G.Moon, Hoi RiLee, Sang MoonKim, Jung MinKang, SunwooJun, YongseokKim, Hae Jin
Issued Date
2012-10
DOI
10.1016/j.ijhydene.2012.07.029
URI
https://scholarworks.unist.ac.kr/handle/201301/3680
Fulltext
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84866138840
Citation
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.37, no.19, pp.14217 - 14222
Abstract
In order to prove the existence of an optimum interlayer distance for H-2 uptake, we have obtained H-2 isotherms with respect to the interlayer distance of pillared-graphene oxide (GO) at 1.0 bar and 77 K. Interlayer distances of GO were changed by intercalation of three kinds of diaminoalkanes with a different number of carbon atoms (NH2(CH2)(n)NH2, n = 2, 6, 10) as pillars and changing the subsequent thermal annealing conditions. We found an optimum GO interlayer distance for maximum H-2 uptake at 6.3 angstrom similar to the predicted distance from first-principles calculations for graphitic materials, and the value obtained from thermally modulated GO. Our results experimentally corroborate the existence of an optimum interlayer distance and demonstrate the importance of an interlayer distance for the design of materials for H-2 storage.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
ISSN
0360-3199
Keyword (Author)
Pillared-graphene oxideDiaminoalkaneOptimum interlayer distanceHydrogen storage
Keyword
METAL-ORGANIC FRAMEWORKSHYDROGEN STORAGEGRAPHITE OXIDECARBON NANOTUBESSIZENANOCOMPOSITESREDUCTIONCAPACITY

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