Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 112, Issue 5, Pages 1562-1569Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp077387d
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In this work a systematic computational study was performed to investigate the effects of organic linker, pore size and topology, and the electrostatic fields on the adsorption and diffusion behaviors of CO2 in nine typical metal-organic frameworks (MOFs), showing that the high CO2 storage capacity achieved in MOFs is a complex interplay of these structural properties. Under practical application conditions, MOFs show higher CO2 storage capacity than both zeolites and carbon materials, and the suitable pore size is between 1.0 and 2.0 nm. For MOFs with pore size located in the above range, the larger the accessible surface area and free volume, the higher the CO2 storage capacity can be achieved in practical applications. In addition, this work shows that the self-diffusivity of CO2 in the MOFs is comparative in magnitude with that of zeolites.
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