Abstract: Provided herein are mixed ligand metal organic framework (ML-MOF) materials having rectangular grids characterized by the general formula MaMbF6-n(O/H2O)n(Ligand?)x(Ligand?)y(solvent)z, which are effective for capture of carbon dioxide from a fluid composition.

Abstract: Embodiments include a method of making a continuous metal-organic framework membrane, the method including contacting a rare earth- or zirconium-containing compound, an acid, a solvent, and optionally water sufficient to form a hexanuclear cluster solution, contacting the hexanuclear cluster solution with one or more ditopic ligands sufficient to form a metal-organic framework (MOF) solution, contacting the MOF solution with a support, and applying a current to the MOF solution with support, sufficient to provide a continuous metal-organic framework membrane.

Abstract: A method for producing a fluorinated pillar metal-organic framework (MOF) materials is provided that avoids the need for high temperatures, and eliminates or substantially eliminates the need to use hydrofluoric acid. A reaction mixture comprising one or more sources of a metal Ma, niobium, fluorine and ligand in a solvent forms the fluorinated pillar MOF materials.

Abstract: Embodiments include methods of fabricating a zeolite-like metal-organic framework with an ana-topology (ana-ZMOF) thin film membrane, the methods comprising: (1) modifying a substrate with ana-ZMOF crystal precursors in the presence of polyvinylpyrrolidone; and (2) intergrowing the ana-ZMOF crystal precursors in the presence of polyvinylpyrrolidone to form a continuous defect-free thin film of an ana-ZMOF intergrown on the substrate. Embodiments further include methods of separating chemical species comprising contacting an ana-ZMOF thin film membrane with a fluid composition containing one or more chemical species and separating at least one of the chemical species.

Abstract: A method for capturing carbon dioxide (CO2) from a humid gas stream is provided. In certain embodiments, the gas stream is a humid natural gas combine cycle (NGCC) exhaust stream. In certain embodiments, the gas stream is a humid air stream. The humid gas stream comprises CO2 and oxygen (O2). In the method, the humid gas stream is contacted with a metal organic framework (MOF) material KAUST-7. The CO2 from the humid gas stream is captured with the KAUST-7 MOF material to generate a CO2-concentrated gas stream comprising approximately 1-30% of CO2.

Abstract: Embodiments of the present disclosure describe materials comprising a metal component, a first polytopic ligand, and a second polytopic ligand that associate to form an intricate mixed-linker structure with a merged-net. Embodiments of the present disclosure further describe methods of synthesizing intricate mixed-linker structure comprising: contacting a metal precursor, first ligand precursor, and second ligand precursor under reaction conditions sufficient to form an intricate mixed-linker structure with a merged net.

Abstract: An air breathing filtering system includes a housing having an air input and an air output, a first filtering stage that filters out particles from a first air stream to generate a second air stream, and a second filtering stage that filters out germs from the second air stream to generate a third air stream, wherein the second filtering stage uses a different filtering process than the first filtering stage. The first air stream is received at the air input and the third air stream is discharged outside the housing at the air output. The second filtering stage uses a liquid to disable the germs from the second air stream.

Abstract: A molecular building block composition can include a metal ion component; and a ligand component including a core including at least one functional group associated with the metal ion component and the core.

Abstract: Metal-organic frameworks for capturing one or more of SO2, CO2, and H2O are disclosed herein. Non-limiting examples of metal-organic frameworks include NbOFFIVE-1-Ni and AIFFIVE-1-Ni, among others. The metal-organic frameworks can be used in applications for removing and/or sensing one or more of SO2, CO2, and H2O from a fluid composition or an environment, either of which can proceed under dry or humid conditions and/or at room temperature.

Abstract: Embodiments of the present disclosure describe a device for removing CO2 comprising a gas flow inlet, a housing including a SIFSIX-3-Cu metal-organic framework (MOF) composition for sorbing and/or desorbing CO2, and a gas flow outlet. Embodiments of the present disclosure describe an anesthetic system comprising one or more regeneratable cartridges for sorbing and/or desorbing CO2, wherein each of the one or more regeneratable cartridge includes a metal-organic framework composition, wherein at least one of the regeneratable cartridges includes a SIFSIX-3-Cu MOF. Embodiments of the present disclosure describe an alkaline fuel cell comprising a catalyst layer including a SIFSIX-3-Cu MOF composition for sorbing and/or desorbing CO2.

Abstract: Embodiments of the present disclosure describe a metal-organic framework (MOF) composition comprising a plurality of metal clusters, wherein the metal is chromium; and one or more tetratopic ligands; wherein the metal clusters and ligands associate to form a MOF with soc topology. A method of making a MOF comprising contacting a template MOF of formula Fe-soc-MOF and a reactant including chromium in a presence of dimethylformamide sufficient to replace Fe with Cr and form an exchanged MOF of formula Cr-soc-MOF. A method of sorbing water vapor comprising exposing a Cr-soc-MOF to an environment; and sorbing water vapor using the Cr-soc-MOF.

Abstract: Embodiments include an electrode material including a plurality of cores fused to a plurality of redox active linkers via Aza units to form a layered two-dimensional (2D) Aza-fused pi-conjugated covalent organic framework (COF). Embodiments also include a negative electrode material including the electrode material, as well as a supercapacitor device and an asymmetric supercapacitor device including the electrode material. Embodiments further include a method of making an electrode material including one or more of the following steps: combining a hexaketocyclohexane compound and an aromatic tetraamine compound in a solution; mixing the solution including the hexaketocyclohexane compound and the aromatic tetraamine compound; and heating the mixed solution to form a 2D Aza-fused pi-conjugated COF.

Abstract: Embodiments of the present disclosure describe freestanding microporous membranes, methods of fabricating freestanding microporous membranes, freestanding porous membranes as electrode separators, electrochemical cells comprising freestanding porous membranes, and the like. In one aspect, the present invention provides an electrode separator comprising a freestanding microporous membrane including at least one of a covalent organic framework and a metal organic framework, and a threading polymer associated with the freestanding microporous membrane via one or more non-covalent interactions, wherein each of the threading polymer and freestanding microporous membrane include at least one moiety that participates in the one or more non-covalent interactions.

Abstract: Embodiments describe a method of depositing an MOF, including depositing a metal solution onto a substrate, spinning the substrate sufficient to spread the metal solution, depositing an organic ligand solution onto the substrate and spinning the substrate sufficient to spread the organic ligand solution and form a MOF layer.

Abstract: A moisture sensor is configured to be deployed in soil for measuring a moisture content. The moisture sensor includes a housing; a transistor configured to interact with water from the soil; a power source configured to generate an electrical current; and a processing unit configured to receive a reading from the transistor, and to calculate the moisture content of the soil based on the reading. The transistor includes a metal-organic framework, MOF.

Abstract: Embodiments of the present disclose provide a method of sorbing one or more compounds from a fluid, wherein the method may include contacting a M-soc-MOF composition with a fluid containing at least H2S and one or more of CO2 and CH4; and sorbing at least H2S from the fluid. Embodiments of the present disclosure provide a membrane that may include a metal-organic framework (MOF) composition, wherein the MOF composition includes a M-soc-MOF composition, where M is a metal and soc is a square-octahedral topology, and wherein the M-soc-MOF composition is a continuous thin film on a support.

Abstract: An NO2 detection device includes a substrate; a drain formed on the substrate; a source formed on the substrate; a p-type polymer semiconductor layer formed on the substrate, between the drain and the source; and an n-type metal-organic framework layer located over the p-type polymer semiconductor layer. The n-type metal-organic framework layer has apertures having a size larger than a size of the NO2 molecules so that the NO2 molecules pass through the n-type metal-organic framework layer to arrive at the p-type polymer semiconductor layer to increase an electrical current.

Abstract: Embodiments provide a method of compound removal from a fluid. The method includes contacting one or more metal organic framework (MOF) compositions with a fluid and sorbing one or more compounds, such as CO2, H2S and condensable hydrocarbons. One or more of CO2, H2S and condensable hydrocarbons can be sorbed simultaneously or in series. The metal organic framework can be an M-soc-MOF.

Abstract: Provided herein are metal organic frameworks comprising metal nodes and N-donor organic ligands which have high selectivity and stability in the present of gases and vapors including H2S, H2O, and CO2. Methods include capturing one or more of H2S, H2O, and CO2 from fluid compositions, such as natural gas.

Abstract: A method for capturing CO2 from a gas stream using a metal organic framework (MOF) based physisorbent CO2 concentrator is provided. In the method, MOF material is pretreated, a gas stream is then introduced into the CO2 concentrator which comprises the pretreated MOF material. CO2 from the gas stream is captured with the CO2 concentrator to generate a CO2-free stream, which is discharged the from the CO2 concentrator into the atmosphere. Introduction of the gas stream into the CO2 concentrator is stopped when the pretreated MOF material becomes saturated with CO2. The CO2 concentrator with the saturated MOF material is then regenerated by introducing hot air, hot nitrogen, vacuum, or a combination thereof into the CO2 concentrator thereby generating a CO2-rich stream. The CO2-rich stream is diverted for purification and the regenerated CO2 concentrator is recycled for future capture of CO2.