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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.2c01124
|2 doi
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|a (DE-627)NLM348570775
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|a DE-627
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|a eng
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|a Applegate, Lindsey C
|e verfasserin
|4 aut
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|a Impacts of Surface Adsorption on Water Uptake within a Metal Organic Nanotube Material
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 26.11.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a The confinement-dependent properties of solvents, particularly water, within nanoporous spaces impart unique physical and chemical behavior compared to those of the bulk. This has previously been demonstrated for a U(VI)-based metal organic nanotube that displays ice-like arrays of water molecules within the 1-D pore space and complete selectivity to H2O over all other solvents and isotopologues. Based upon our previous work on D2O and HTO adsorption processes, we suggested that the water uptake was controlled by a two-step process: (1) surface adsorption via hydrogen bonding to hydrophilic amine and carboxylic groups and (2) diffusion of the water into the hydrophobic 1-D nanochannels. The current study seeks to evaluate this hypothesis and expand our existing kinetic model for the water diffusion step to account for the initial surface adsorption process. Vapor sorption experiments, paired with thermogravimetric and Fourier-transform infrared analyses, yielded uptake data that were fit using a Langmuir model for the surface-adsorption step of the mechanism. The water adsorption curve was designated a type IV Brunauer-Emmett-Teller isotherm, which indicated that our original hypothesis was correct. Additional work with binary solvent systems enabled us to evaluate the uptake in a range of conditions and determine that the uptake is not controlled by the vapor pressure but is instead completely dependent on the relative humidity of the system
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|a Journal Article
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|a Samarasiri, Vidumini S
|e verfasserin
|4 aut
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| 700 |
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|a Leddy, Johna
|e verfasserin
|4 aut
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| 700 |
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|a Forbes, Tori Z
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 38(2022), 46 vom: 22. Nov., Seite 14025-14035
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:38
|g year:2022
|g number:46
|g day:22
|g month:11
|g pages:14025-14035
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|u http://dx.doi.org/10.1021/acs.langmuir.2c01124
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