A5007943994- Metal-Organic Frameworks: Synthesis and Applications
- Covalent Organic Framework Applications
- X-ray Diffraction in Crystallography
- Carbon Dioxide Capture Technologies
- Crystallization and Solubility Studies
- Zeolite Catalysis and Synthesis
- Membrane Separation and Gas Transport
- Mesoporous Materials and Catalysis
- Phase Equilibria and Thermodynamics
- Adsorption and Cooling Systems
- Porphyrin and Phthalocyanine Chemistry
- Catalysis and Hydrodesulfurization Studies
- Analytical Chemistry and Sensors
- Supercapacitor Materials and Fabrication
- Electrocatalysts for Energy Conversion
- Surface Chemistry and Catalysis
- Catalysis and Oxidation Reactions
- Supramolecular Chemistry and Complexes
- Advanced biosensing and bioanalysis techniques
- Catalytic Processes in Materials Science
- Glass properties and applications
- Advanced Photocatalysis Techniques
- Carbon dioxide utilization in catalysis
- Catalysis for Biomass Conversion
- Inorganic Fluorides and Related Compounds
Pacific Northwest National Laboratory
2015-2024
Battelle
2014-2017
Richland College
2014-2017
Rockwell Automation (United States)
2017
University of Bonn
2006-2009
University of Missouri
2008
Heriot-Watt University
2008
Physical Sciences (United States)
2008
Sci-Tech Daresbury
2008
Indian Institute of Chemical Technology
2000-2007
A breathing 2-fold interpenetrated microporous metal-organic framework was synthesized with a flexible tetrahedral organic linker and Zn(2) clusters that sorb CO(2) preferably over N(2) H(2).
Abstract Nuclear energy is among the most viable alternatives to our current fossil fuel-based economy. The mass deployment of nuclear as a low-emissions source requires reprocessing used fuel recover fissile materials and mitigate radioactive waste. A major concern with release volatile radionuclides such xenon krypton that evolve into facility off-gas in parts per million concentrations. existing technology remove these noble gases costly cryogenic distillation; alternatively, porous...
CONSPECTUS: The total world energy demand is predicted to rise significantly over the next few decades, primarily driven by continuous growth of developing world. With rapid depletion nonrenewable traditional fossil fuels, which currently account for almost 86% worldwide output, search viable alternative resources becoming more important from a national security and economic development standpoint. Nuclear energy, an emission-free, high-energy-density source produced means controlled nuclear...
Abstract Low‐cost renewable lignin has been used as a precursor to produce porous carbons. However, date, it not easy obtain high surface area carbon without activation processes or templating agents. Here, we demonstrate that low molecular weight yields highly with more graphitization through direct carbonization additional We found and oxygen consumption during are critical factors area, graphitized This from low‐cost sources is good candidate for supercapacitor electrode materials.
Mononuclear and dinuclear copper species were synthesized at the nodes of an NU-1000 metal–organic framework (MOF) via cation exchange subsequent oxidation 200 °C in oxygen. Copper-exchanged MOFs are active for selectively converting methane to methanol 150–200 °C. At 150 1 bar methane, approximately a third centers involved methanol. Methanol productivity increased by 3–4-fold selectivity from 70% 90% increasing pressure 40 bar. Density functional theory showed that reaction pathways on...
Two well-known metal-organic frameworks (MOF-5, NiDOBDC) were synthesized and studied for facile xenon capture separation. Our results indicate that NiDOBDC adsorbs significantly more than MOF-5, is selective over krypton activated carbon.
Three interpenetrated metal-organic supramolecular isomers were synthesised using a flexible tetrahedral organic linker and Zn(2) clusters that sorb CO(2) preferably over N(2), H(2) methane at room temperature.
Synthesis and gas sorption properties of a novel fluorinated metal−organic framework using commercially available 2,2-bis(4-carboxyphenyl)hexafluoropropane is reported with high selectivity toward CO2, H2S, SO2 as well breathing motion upon solvent removal inclusion.
Metal–organic frameworks (MOFs) have shown promising behavior for adsorption cooling applications. Using organic ligands with 1, 2, and 3 phenylene rings, we construct moisture-stable Ni-MOF-74 members adjustable pore apertures, which exhibit excellent sorption capabilities toward water fluorocarbon R134a. To our knowledge, this is the first report of isotherms R134a in MOFs. The patterns these materials differ significantly are attributed to variances their hydrophobic/hydrophilic character...
Abstract The oxygen electrode plays a vital role in the successful commercialization of renewable energy technologies, such as fuel cells and water electrolyzers. In this study, Prussian blue analogue‐derived nitrogen‐doped nanocarbon (NC) layer‐trapped, cobalt‐rich, core–shell nanostructured electrocatalysts (core–shell Co@NC) are reported. exhibits an improved evolution activity stability compared to that commercial noble electrodes. Co@NC‐loaded nickel foam lower overpotential 330 mV than...
Adsorption isotherms of pure gases present in flue gas including CO2, N2, SO2, NO, H2S, and water were studied using prussian blues chemical formula M3[Co(CN)6]2·nH2O (M = Co, Zn) an HPVA-100 volumetric analyzer other spectroscopic methods. All the samples characterized, microporous nature was BET isotherm. These materials adsorbed 8−10 wt % CO2 at room temperature 1 bar pressure with heats adsorption ranging from 200 to 300 Btu/lb which is lower than monoethanolamine (750 CO2) same mass...
The growing global concerns to public health from human exposure perfluorooctanesulfonate (PFOS) require rapid, sensitive, in situ detection where current, state-of-the-art techniques are yet adequately meet sensitivity standards of the real world. This work presents, for first time, a synergistic approach targeted affinity-based capture PFOS using porous sorbent probe that enhances by embedding it on microfluidic platform. novel sorbent-containing platform functions as an electrochemical...
With advances in porous carbon synthesis techniques, hierarchically (HPC) materials are being utilized as relatively new sorbents for CO2 capture applications. These HPC were used a platform to prepare samples with differing textural properties and morphologies elucidate structure–property relationships. It was found that high microporous content, rather than overall surface area, of primary importance predicting good performance. Two analyzed, each near identical area (∼2700 m2/g)...
This study evaluated zeolite-based sorbents for iodine gas [I2(g)] capture. Based on the framework structures and porosities, five zeolites, including two faujasite (FAU), one ZSM-5 (MFI), mesoMFI, ZSM-22 (TON), as well mesoporous materials, were I2(g) capture at room temperature 150 °C in an iodine-saturated environment. From these preliminary studies, three best-performing zeolites ion-exchanged with Ag+ under similar conditions. Energy-dispersive X-ray spectroscopy data suggest that...
The design of nanostructured materials with tunable dimensions and properties that maintain their structural integrity under physiological conditions is a major challenge in biomedical engineering nanomedicine. Helical rosette nanotubes (HRN) are new class produced through hierarchical self-assembly process low molecular weight synthetic organic modules water. Here, we describe strategy to tune stability hierarchy by preorganization the self-assembling units, control net charge per unit...
Abstract Vapor-assisted dry-gel synthesis of the metal-organic framework-74 (MOF-74) structure, specifically Ni-MOF-74 produced from synthetic precursors using an organic-water hybrid solvent system, showed a very high yield (>90% with respect to 2,5-dihydroxyterepthalic acid) and enhanced performance. The obtained improved sorption characteristics towards CO 2 refrigerant fluorocarbon dichlorodifluoromethane. Unlike conventional synthesis, which takes 72 hours tetrahydrofuran-water this...
One approach to reduce increasing concentrations of toxic per- and polyfluoroalkyl substances (PFAS) involves the capture PFAS from aqueous media using porous materials. The use highly porous, tunable metal organic framework (MOF) materials is appealing for targeted liquid phase sorption. In this work, we demonstrate excellent perfluorooctanesulfonate (PFOS) both chromium iron analogs MIL-101 framework. Experimental characterization PFOS uptake reveals unique differences in sorption...
A redox-active metal–organic composite material shows improved and selective O2 adsorption over N2 with respect to individual components (MIL-101 ferrocene). The sensitivity of the arises due formation maghemite nanoparticles pore framework material. As a service our authors readers, this journal provides supporting information supplied by authors. Such materials are peer reviewed may be re-organized for online delivery, but not copy-edited or typeset. Technical support issues arising from...
The rapid growth in the global energy demand for space cooling requires development of more efficient environmental chillers which adsorption-based systems can be utilized. Here, this contribution, we explore sorbents chiller use via a pore-engineering concept to construct analogs 1-dimensional pore metal-organic framework MOF-74 by using elongated organic linkers and stereochemistry control. prepared pore-engineered MOFs show remarkable equilibrium adsorption selected fluorocarbon...
A zeolite catalyzed, single step and environmentally friendly process for the synthesis of dihydropyrimidinones, a pharmacologically important class compounds, is reported. Reusability catalyst ease separation pure product, selectively in high yields comparison to classical Biginelli reaction, are few unique features this process.
Micro and mesoporous metal-organic frameworks were synthesized using a single tetrahedral building block their catalytic properties towards alkylation of toluene biphenyl showed high selectivity for the para oriented product these porous materials.
The mixed‐metal strategy, by which a MOF framework with two different metal nodes was prepared, utilized MOF‐74 for potential adsorption chiller applications. Ni salt precursor partially replaced during synthesis the relatively inexpensive Zn salt. bimetallic containing only fraction of shown to provide efficient H 2 O performance, while utilizing more thus significantly mitigated material costs industrial scale synthesis/applications.