Journal
CARBON
Volume 111, Issue -, Pages 681-688Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2016.10.040
Keywords
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Funding
- Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy [DE-AC05-00OR22725]
- ORNL Laboratory Directed Research and Development (LDRD) program
- ORNL Postdoctoral Research Associates Program
- Oak Ridge Institute for Science and Education
- Materials Science and Engineering Division, Office of Basic Energy Sciences, U.S. Department of Energy [DE-AC05-00OR22725]
- Laboratory-Directed Research and Development Program of Oak Ridge National Laboratory
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The adsorption of water is central to most of the applications of microporous carbon as adsorbent material. We report early kinetics of water adsorption in ultramicroporous carbon using in-situ small-angle neutron scattering. It is observed that adsorption of water occurs via cluster formation. Interestingly, the cluster size remains constant throughout the adsorption process whereas the number density of clusters increases with time. The role of surface chemistry of microporous carbon on the early kinetics of adsorption process was also investigated. The present study provides direct experimental evidence for cluster assisted adsorption of water molecules in microporous carbon (Do-Do model). (C) 2016 Elsevier Ltd. All rights reserved.
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