A5080511577- Metal-Organic Frameworks: Synthesis and Applications
- Covalent Organic Framework Applications
- Advanced Photocatalysis Techniques
- Radioactive element chemistry and processing
- Catalytic Processes in Materials Science
- Membrane Separation and Gas Transport
- Sulfur Compounds in Biology
- Chemical Synthesis and Reactions
- Energetic Materials and Combustion
- TiO2 Photocatalysis and Solar Cells
- Dendrimers and Hyperbranched Polymers
- MXene and MAX Phase Materials
- Zeolite Catalysis and Synthesis
- Crystallography and molecular interactions
- Nanoplatforms for cancer theranostics
- Magnesium Oxide Properties and Applications
- Machine Learning in Materials Science
- Pesticide Exposure and Toxicity
- Gas Sensing Nanomaterials and Sensors
- Mass Spectrometry Techniques and Applications
- Industrial Gas Emission Control
- Material Properties and Processing
- Recycling and Waste Management Techniques
- Thermal and Kinetic Analysis
- Lanthanide and Transition Metal Complexes
United States Army Combat Capabilities Development Command
2015-2023
U.S. Army Combat Capabilities Development Command Chemical Biological Center
2011-2021
CECOM Software Engineering Center
2015-2019
United States Army
2018-2019
United States Department of the Army
2018
DEVCOM Army Research Laboratory
2015-2018
Edgewood College
2017
Leidos (United States)
2013-2016
Vanderbilt University
2014
Science Applications International Corporation (United States)
2013
Metal–organic frameworks (MOFs) with the Zr6O4(OH)4 secondary building unit (SBU) have been of particular interest for potential commercial and industrial uses because they can be easily tailored are reported to chemically thermally stable. However, we show that there significant changes in chemical thermal stability MOFs incorporation different organic linkers. As number aromatic rings is increased from one two 1,4-benzene dicarboxylate (UiO-66, ZrMOF–BDC) 4,4′-biphenyl (UiO-67,...
Metal–organic frameworks (MOFs) with metal–carboxylate bonds, including Cu-BTC (HKUST-1), Mg-MOF-74 (Mg/DOBDC), and UiO-66, have been shown to varying degrees of water stability. The three MOFs in this study are the most highly studied literature. We investigate here how each MOF degrades at several temperature humidity conditions over course 28 days. At 90% relative (RH) 25 °C, uptake for is be higher than RH 40 causing degradation inner structure occur more readily lower temperature....
Metal organic frameworks (MOFs) are a leading class of porous materials for wide variety applications, but many them have been shown to be unstable toward water. Cu-BTC (1,3,5 benzenetricarboxylic acid, BTC) was treated with plasma-enhanced chemical vapor deposition (PECVD) perfluorohexane creating hydrophobic form Cu-BTC. It found that the could withstand high humidity and even submersion in water much better than unperturbed Through Monte Carlo simulations it sites itself such way within...
Recently, polymer-metal-organic frameworks (polyMOFs) were reported as a new class of hybrid porous materials that combine advantages both organic polymers and crystalline MOFs. Herein, we report bridging coligand strategy to prepare types polyMOFs, demonstrating polyMOFs are compatible with additional MOF architectures besides the earlier IRMOF-1 type polyMOF. Gas sorption studies revealed these polyMOF exhibited relatively high CO2 but very low N2 sorption, making them promising for CO2/N2...
Textiles capable of capture and detoxification toxic chemicals, such as chemical-warfare agents (CWAs), are high interest. Some metal-organic frameworks (MOFs) exhibit superior reactivity toward CWAs. However, it remains a challenge to integrate powder MOFs into engineered materials like textiles, while retaining functionalities crystallinity, adsorptivity, reactivity. Here, we present simple method electrospinning UiO-66-NH2, zirconium MOF, with polyvinylidene fluoride (PVDF). The...
Abstract Here we discuss the removal of nitrogen dioxide, an important toxic industrial chemical and pollutant, from air using MOF UiO‐66‐NH 2 . The amine group is found to substantially aid in removal, resulting unprecedented capacities upwards 1.4 g NO /g MOF. Furthermore, whereas typically generates substantial quantities on sorbents, amount generated by significantly reduced. Of particular significance formation a diazonium ion aromatic ring MOF, potential reduction molecular nitrogen.
Evaluation of UiO-66 and UiO-67 metal-organic framework derivatives as catalysts for the degradation soman, a chemical warfare agent, showed importance both linker size functionality. The best yielded half-lives less than 1 min. Further testing with nerve agent simulant established that different rate-assessment techniques yield similar values half-lives.
A pyrene-based metal-organic framework (MOF) NU-1000 was used as a heterogeneous photocatalyst for the degradation of sulfur mustard simulant, 2-chloroethyl ethyl sulfide (CEES). Using irradiation from commercially available and inexpensive ultraviolet (UV) light-emitting diode (LED), singlet oxygen (1O2) is generated by selectively oxidizes CEES to nontoxic product sulfoxide (CEESO). More importantly, this method tested on warfare agent (HD) first time using 1O2 MOF catalyst, proved be...
The metal-organic framework (MOF) HKUST-1 incorporated into a mixed-matrix membrane (MMM) exhibits enhanced water stability while maintaining gas removal capabilities commensurate with those of the free powder form.
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTCerium(IV) vs Zirconium(IV) Based Metal–Organic Frameworks for Detoxification of a Nerve AgentTimur Islamoglu§, Ahmet Atilgan§, Su-Young Moon§, Gregory W. Peterson‡, Jared B. DeCoste‡, Morgan Hall‡, Joseph T. Hupp§, and Omar K. Farha*§⊥View Author Information§ Department Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States‡ Edgewood Chemical Biological Center, U.S. Army Research, Development,...
A new metal–organic framework analogue is stable under ambient conditions with the ability to remove toxic gases.
The nerve agent VX is among the most toxic chemicals known to mankind, and robust solutions are needed rapidly selectively deactivate it. Herein, we demonstrate that three Zr6-based metal–organic frameworks (MOFs), namely, UiO-67, UiO-67-NH2, UiO-67-N(Me)2, selective highly active catalysts for hydrolysis of VX. Utilizing UiO-67-N(Me)2 in a pH 10 buffered solution N-ethylmorpholine, P–S bond was observed. In addition, found catalyze with an initial half-life 1.8 min. This nearly 3 orders...
The metal–organic framework UiO-66-NH2 was synthesized in a scaled batch of approximately 100 g. material then pressed into small pellets at pressures ranging from 5000 to 100000 psi determine the effects on porosity and crystal structure. Nitrogen isotherm data powder X-ray diffraction indicate that structure remains intact up 25000 psi, with only slight decrease surface area. exhibits significant degradation above psi. Subsequently, crushed sieved 20 × 40 mesh granules for evaluation...
Cu-MOF-74 (also known as Cu-CPO-27) was identified a sorbent having one of the highest densities Cu(ii) sites per unit volume. Given that in framework can be thermally activated to yield five-coordinate species, we this MOF potential candidate for maximal volumetric uptake ammonia. To end, kinetic breakthrough ammonia Cu-MOF-74/Cu-CPO-27 examined under both dry and humid conditions. Under conditions exhibited respectable performance (2.6 vs. 2.9 NH3 nm(3) current record holder HKUST-1), 80%...
The development of protective self-detoxifying materials is an important societal challenge to counteract risk attacks employing highly toxic chemical warfare agents (CWAs). In this work, we have developed bifunctional zirconium metal–organic frameworks (MOFs) incorporating variable amounts nucleophilic amino residues by means formation the mixed ligand [Zr6O4(OH)4(bdc)6(1–x)(bdc-NH2)6x] (UiO-66-xNH2) and [Zr6O4(OH)4(bpdc)6(1–x)(bpdc-(NH2)2)6x] (UiO-67-x(NH2)2) systems where bdc =...
A fullerene-based photosensitizer is incorporated postsynthetically into a Zr6 -based MOF, NU-1000, for enhanced singlet oxygen production. The structural organic linkers in the MOF platform also act as photosensitizers which contribute to overall generation of from material under UV irradiation. generated by MOF/fullerene shown oxidize sulfur mustard selectively less toxic bis(2-chloroethyl)sulfoxide with half-life only 11 min.
Owing to their high surface area, periodic distribution of metal sites, and water stability, zirconium-based metal-organic frameworks (Zr6 -MOFs) have shown promising activity for the hydrolysis nerve agents GD VX, as well simulant, dimethyl 4-nitrophenylphosphate (DMNP), in buffered solutions. A hurdle using MOFs this application is current need a buffer solution. Here destruction simulant DMNP, chemical warfare (GD VX) through MOF catalyst mixed with non-volatile, water-insoluble,...
Metal–organic frameworks (MOFs) are a new and growing area of materials with high porosity customizability. UiO-66, zirconium-based MOF, has shown much interest to the military because ability MOF catalytically decontaminate chemical warfare agents (CWAs). Unfortunately, applications for MOFs limited their powder form, which is difficult incorporate into protective clothing. As result, research developed functionalize fabrics make wearable multifunctional fabric that retains desired...
Abstract We present a systematic study of metal–organic frameworks (MOFs) for the storage oxygen. The starts with grand canonical Monte Carlo simulations on suite 10 000 MOFs adsorption From these data, were down selected to prime candidates HKUST‐1 (Cu‐BTC) and NU‐125, both coordinatively unsaturated Cu sites. Oxygen isotherms up 30 bar measured at multiple temperatures determine isosteric heat oxygen each MOF by fitting Toth isotherm model. High pressure (up 140 bar) NU‐125 working...
Electrospun polymer fibers containing poly(methyl methacrylate) (PMMA), Ti(OH)<sub>4</sub>, and UiO-66 convert a chemical warfare agent simulant to non-toxic product <italic>via</italic> catalytic hydrolysis.