Embodiments of the present disclosure describe a method of capturing chemical species from a fluid composition comprising providing a metal-organic framework characterized by the formula MaMbF5(O/H2O)(pyrazine)2.x(solv), wherein Ma is Ni2+; Mb is Nb5+, Al3+, or Fe3+; x is from 0 to 10 and solv is on
Embodiments of the present disclosure describe a method of capturing chemical species from a fluid composition comprising providing a metal-organic framework characterized by the formula MaMbF5(O/H2O)(pyrazine)2.x(solv), wherein Ma is Ni2+; Mb is Nb5+, Al3+, or Fe3+; x is from 0 to 10 and solv is one or more of H2O, CO2, DMF, EtOH, NMP, MeOH; contacting the metal-organic framework with a fluid composition including H2O, CO2, and one or more other chemical species; and capturing H2O and CO2 simultaneously from the fluid composition.
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1. A method of capturing chemical species from a fluid composition, comprising: providing a metal-organic framework characterized by the formula MaMbF5(O/H2O)(pyrazine)2.x(solv), wherein Ma is Ni2+; Mb is Nb5+, Fe3+, Fe5+, V3+, or V5+; x is from 0 to 10 and solv is one or more of H2O, CO2, DMF, EtOH
1. A method of capturing chemical species from a fluid composition, comprising: providing a metal-organic framework characterized by the formula MaMbF5(O/H2O)(pyrazine)2.x(solv), wherein Ma is Ni2+; Mb is Nb5+, Fe3+, Fe5+, V3+, or V5+; x is from 0 to 10 and solv is one or more of H2O, CO2, DMF, EtOH, NMP, MeOH.contacting the metal-organic framework with a fluid composition including H2O, CO2, and one or more other chemical species; andcapturing H2O and CO2 simultaneously from the fluid composition. 2. The method of claim 1, wherein the metal-organic framework includes one or more of NiNbOF5(pyrazine)2.x(solv) and NiFeF5(H2O)(pyrazine)2.x(solv). 3. The method of claim 1, wherein the metal-organic framework includes a periodic array of open metal coordination sites and fluorine moieties within a contracted square-shaped one-dimensional channel. 4. The method of claim 1, wherein the one or more other chemical species are selected from N2, H2, CH4, n-C4H10, iso-C4H10, 1-propanol, and isopropanol. 5. The method of claim 1, wherein the one or more other chemical species further includes a linear hydrocarbon and/or branched hydrocarbon. 6. The method of claim 1, wherein H2O and CO2 are preferentially captured at distinct adsorption sites of the metal-organic framework. 7. The method of claim 1, wherein H2O is captured at open metal coordination sites of the metal-organic framework. 8. The method of claim 1, wherein CO2 is preferentially captured via interactions with one or more of fluorine atoms of pillars and hydrogen atoms of pyrazine. 9. The method of claim 1, wherein capturing H2O and CO2 is non-competitive. 10. The method of claim 1, wherein the capturing of H2O is independent of CO2 concentration of the fluid composition and the presence of the one or more other chemical species in the fluid composition. 11. The method of claim 1, wherein the metal-organic framework selectively adsorbs H2O and CO2 over the one or more other chemical species of the fluid composition. 12. The method of claim 1, wherein a H2O/CO2 selectivity ranges from about 2 to about 39. 13. (canceled) 14. The method of claim 13, wherein the metal-organic framework is saturated with H2O at a partial pressure of about 0.5 P/P0. 15. The method of claim 13, wherein the metal-organic framework is saturated with CO2 at a partial pressure of about 0.5 P/P0. 16. The method of claim 1, wherein the metal-organic framework is regenerated at a temperature of about 150° C. or less. 17. The method of claim 16, wherein the regeneration temperature is about 105° C. 18. The method of claim 1, wherein the metal-organic framework exhibits structural relaxation of host framework upon dehydration and re-activation. 19. A method of capturing chemical species from a fluid composition, comprising: providing a metal-organic framework, the metal-organic framework including a pillar characterized by the formula (MbF5(O/H2O))2−, where Mb is a metal cation with a +3 or +5 oxidation state;contacting the metal-organic framework with a fluid composition including H2O, CO2, and one or more other chemical species; andcapturing H2O and CO2 simultaneously from the fluid composition. 20. The method of claim 18, wherein Mb includes one or more of Fe3+, La3+, Rh3+, Ti3+, Cr3+, Ga3+, In3+, Fe5+, Sc3+, Y3+, V3+, and V5+.
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