Please use this identifier to cite or link to this item: https://doi.org/10.1039/b805473h
Title: Exceptionally high CO2 storage in covalent-organic frameworks: Atomistic simulation study
Authors: Babarao, R.
Jiang, J. 
Issue Date: 2008
Citation: Babarao, R., Jiang, J. (2008). Exceptionally high CO2 storage in covalent-organic frameworks: Atomistic simulation study. Energy and Environmental Science 1 (1) : 139-143. ScholarBank@NUS Repository. https://doi.org/10.1039/b805473h
Abstract: Atomistic simulations have been performed on CO2 storage in covalent-organic frameworks (COFs) including 3D (COF-102, COF-103, COF-105, and COF-108), 2D (COF-6, COF-8, COF-10) and 1D (COF-NT) structures. Compared to 2D and 1D COFs, 3D COFs have substantially larger free volume, porosity and surface area. As a counterbalance of low framework density and large porosity, COF-105 and COF-108 show exceptionally high storage capacity, even surpassing the experimentally measured highest capacity in MOF-177. COF-6 exhibits the largest isosteric heat and Henry constant due to the presence of constricted pores, but the lowest saturation capacity. COF-NT has adsorption behavior similar to a carbon nanotube. Different adsorption capacities in COFs are attributed to the interplay of various complex factors such as framework density, free volume, porosity and surface area. Gravimetric and volumetric capacities at 300 K and 30 bar correlate well with these factors. The molecular-based structure-function correlations are useful to predict capacity and screen COFs for CO2 storage. © The Royal Society of Chemistry 2008.
Source Title: Energy and Environmental Science
URI: http://scholarbank.nus.edu.sg/handle/10635/88873
ISSN: 17545692
DOI: 10.1039/b805473h
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