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- W4385199265 abstract "In light of the pressing need for efficient carbon capture solutions, our study investigates the simultaneous adsorption of water (H2O) and carbon dioxide (CO2) as a function of relative humidity in CALF-20, a highly scalable and stable metal-organic framework (MOF). Advanced computer simulations reveal that, due to their similar interactions with the frame- work, H2O and CO2 molecules compete for the same binding sites, occupying similar void regions within the CALF-20 pores. This competition results in distinct thermodynamic and dynamical behavior of H2O and CO2 molecules, depending on whether one or both guest species are present. Notably, the presence of CO2 molecules forces the H2O molecules to form more connected hydrogen-bond networks within smaller regions, slowing water reorien- tation dynamics and decreasing water entropy. Conversely, the presence of water speeds up the reorientation of CO2 molecules, decreases CO2 entropy, and increases the propensity for CO2 to be adsorbed within the framework due to stronger water-mediated interactions. Due to the competition for the same void spaces, both H2O and CO2 molecules exhibit slower diffusion when molecules of the other guest species are present. These findings offer valuable strategies and insights to enhance the differential affinity of H2O and CO2 for MOFs specifically designed for carbon capture applications." @default.
- W4385199265 created "2023-07-25" @default.
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- W4385199265 date "2023-07-24" @default.
- W4385199265 modified "2023-09-27" @default.
- W4385199265 title "Elucidating the Competitive Adsorption of H2O and CO2 in CALF-20: New Insights for Enhanced Carbon Capture Metal-Organic Frameworks" @default.
- W4385199265 doi "https://doi.org/10.26434/chemrxiv-2023-qfb1n" @default.
- W4385199265 hasPublicationYear "2023" @default.
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