Clustering of water molecules in ultramicroporous carbon: In-situ small-angle neutron scattering

被引：39

作者：

Bahadur, J. ^{[1
]}

Contescu, C. I. ^{[2
,3
]}

Rai, D. K. ^{[1
]}

Gallego, N. C. ^{[2
]}

Melnichenko, Y. B. ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Biol & Soft Matter Div, Oak Ridge, TN 37831 USA

[2] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

[3] Bhabha Atom Res Ctr, Div Solid State Phys, Bombay 400085, Maharashtra, India

来源：

CARBON | 2017年 / 111卷

关键词：

ACTIVATED CARBON; VAPOR ADSORPTION; DISORDERED CARBONS; NANOPORES; MODEL; TEMPERATURE; ADSORBENTS; NANOSPACES; SIMULATION; AQUAPORIN;

D O I：

10.1016/j.carbon.2016.10.040

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：681 / 688

页数：8

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