A5082342883- Metal-Organic Frameworks: Synthesis and Applications
- Covalent Organic Framework Applications
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Advanced Photocatalysis Techniques
- Membrane Separation and Gas Transport
- Organoboron and organosilicon chemistry
- Boron and Carbon Nanomaterials Research
- Advanced Nanomaterials in Catalysis
- Carbon dioxide utilization in catalysis
- Methane Hydrates and Related Phenomena
- Nanocluster Synthesis and Applications
- Coal Properties and Utilization
- Supramolecular Self-Assembly in Materials
- Catalytic Processes in Materials Science
- Nanopore and Nanochannel Transport Studies
- Inorganic Fluorides and Related Compounds
- Advanced Sensor and Energy Harvesting Materials
- Microfluidic and Bio-sensing Technologies
- Polyoxometalates: Synthesis and Applications
- Chemical Synthesis and Reactions
- Supramolecular Chemistry and Complexes
- Electrostatics and Colloid Interactions
- Sulfur Compounds in Biology
- Nanoporous metals and alloys
University of North Texas
2020-2023
University of South Florida
2018-2020
University of Tampa
2019
Lawrence Livermore National Laboratory
2016-2018
Lawrence Livermore National Security
2016
The removal of carbon dioxide (CO2) from acetylene (C2H2) is a critical industrial process for manufacturing high-purity C2H2. However, it remains challenging to address the tradeoff between adsorption capacity and selectivity, on account their similar physical properties molecular sizes. To overcome this difficulty, here we report novel strategy involving regulation hydrogen-bonding nanotrap pore surface promote separation C2H2/CO2 mixtures in three isostructural metal-organic frameworks...
Abstract As a major greenhouse gas, methane, which is directly vented from the coal‐mine to atmosphere, has not yet drawn sufficient attention. To address this problem, we report methane nano‐trap that features oppositely adjacent open metal sites and dense alkyl groups in metal–organic framework (MOF). The MOF‐based exhibits record‐high uptake CH 4 /N 2 selectivity at 298 K 1 bar. molecules trapped within MOF were crystalographically identified by single‐crystal X‐ray diffraction...
Abstract Porous materials with open metal sites have been investigated to separate various gas mixtures. However, show the limitation in separation of some challenging mixtures, such as C 2 H /CO . Herein, we propose a new type ultra‐strong nano‐trap based on multiple binding interactions efficiently capture molecules and mixture. The acetylene shows benchmark Q st 79.1 kJ mol −1 for , record high pure uptake 2.54 mmol g at 1×10 −2 bar, highest selectivity (53.6), making it material...
Low-density metal foams have many potential applications in electronics, energy storage, catalytic supports, fuel cells, sensors, and medical devices. Here, we report a new method for fabricating ultralight, conductive silver aerogel monoliths with predictable densities using nanowires. Silver nanowire building blocks were prepared by polyol synthesis purified selective precipitation. aerogels produced freeze-casting aqueous suspensions followed thermal sintering to weld the junctions....
Achieving high-performance biocomposites requires knowledge of the compatability between immobilized enzyme and its host material. The modular nature covalent organic frameworks (COFs), as a host, allows their pore geometries chemical functionalities to be fine-tuned independently, permitting comparative studies individual parameters performances resultant biocomposites. This research demonstrates that dual pores in COFs have profound consequences on catalytic activity denaturation...
Titanium metal-organic frameworks (Ti-MOFs), as an appealing type of artificial photocatalyst, have shown great potential in the field solar energy conversion due to their well-studied photoredox activity (similar TiO2 ) and good optical responsiveness linkers, which serve antenna absorb visible-light. Although much effort has been dedicated developing Ti-MOFs with high photocatalytic activity, performances are still poor. Herein, we implemented a covalent-integration strategy construct...
Abstract Herein, a dynamic spacer installation (DSI) strategy has been implemented to construct series of multifunctional metal—organic frameworks (MOFs), LIFM‐61/31/62/63, with optimized pore space and environment for ethane/ethylene separation. In this respect, linear dicarboxylic acids were deliberately installed in the prototype MOF, LIFM‐28, leading dramatically increased volume (from 0.41 0.82 cm 3 g −1 ) reduced size 11.1×11.1 Å 2 5.6×5.6 ). The endows MOFs much higher ethane...
The separation of xylene isomers (para-, meta-, orth-) remains a great challenge in the petrochemical industry due to their similar molecular structure and physical properties. Porous materials with sensitive nanospace selective binding sites for discriminating subtle structural difference are urgently needed. Here, we demonstrate adaptively discrimination by employing NbOF52--pillared metal-organic framework (NbOFFIVE-bpy-Ni, also referred as ZU-61) rotational anionic sites. Single crystal...
Frustrated Lewis pairs (FLPs) have recently been advanced as efficient metal-free catalysts for catalytic hydrogenation, but their performance in chemoselective particularly heterogeneous systems, has not yet achieved. Herein, we demonstrate that, via tailoring the pore environment within metal-organic frameworks (MOFs), FLPs only can be stabilized also develop interesting hydrogenation of α,β-unsaturated organic compounds, which cannot achieved with a homogeneous system. Using hydrogen gas...
Abstract Porous materials with open metal sites have been investigated to separate various gas mixtures. However, show the limitation in separation of some challenging mixtures, such as C 2 H /CO . Herein, we propose a new type ultra‐strong nano‐trap based on multiple binding interactions efficiently capture molecules and mixture. The acetylene shows benchmark Q st 79.1 kJ mol −1 for , record high pure uptake 2.54 mmol g at 1×10 −2 bar, highest selectivity (53.6), making it material...
Abstract Titanium metal–organic frameworks (Ti‐MOFs), as an appealing type of artificial photocatalyst, have shown great potential in the field solar energy conversion due to their well‐studied photoredox activity (similar TiO 2 ) and good optical responsiveness linkers, which serve antenna absorb visible‐light. Although much effort has been dedicated developing Ti‐MOFs with high photocatalytic activity, performances are still poor. Herein, we implemented a covalent‐integration strategy...
This communication reports a new method to purify copper nanowires with nearly 100% yield from undesired nanoparticle side-products formed during batch processes of nanowire synthesis. simple separation can large quantities long, uniform, high-purity meet the requirements nanoelectronics applications as well provide an avenue for purifying in industrial scale synthesis nanowires, key step commercialization and application nanowires.
Albeit harnessing secondary sphere interactions to exert control over the reaction outcomes has primarily been applied enzymatic and organometallic catalysis, there are seldom any studies that introduce outer-sphere modifiers into organocatalysts. This is even less in corresponding heterogeneous catalytic system. In this contribution, we experimentally computationally investigate role of effects reactivity bromide anions toward CO2 transformations. Six pyridinium cationic porous frameworks...
The separation of C2H2 from C2H2/CO2 mixture is great importance, yet highly challenging in the petrochemical industry due to their similar physicochemical properties. While open-metal sites (OMSs) metal-organic frameworks (MOFs) are known possess high affinity toward C2H2, its selective adsorption performance regulated by electronic state same OMSs remains unexplored. Here, we report a metal electronic-state manipulation approach construct pair isostructural Fe-MOFs, namely...
A 3D nanocage architecture with two types of connectivity was successfully assembled from discrete supramolecular nanocages.
Abstract As a major greenhouse gas, methane, which is directly vented from the coal‐mine to atmosphere, has not yet drawn sufficient attention. To address this problem, we report methane nano‐trap that features oppositely adjacent open metal sites and dense alkyl groups in metal–organic framework (MOF). The MOF‐based exhibits record‐high uptake CH 4 /N 2 selectivity at 298 K 1 bar. molecules trapped within MOF were crystalographically identified by single‐crystal X‐ray diffraction...
The innate modular nature of metal–organic frameworks (MOFs) enables postsynthetic modification the crystalline framework, thereby resulting in novel properties. Anionic MOFs are an interesting category since their pore environment can be modified using a simple ion-exchange process. In this work, we demonstrate that via directly ion exchanging anionic framework not only host for palladium trinuclear transition metal complex but also gain catalytic capability as hybrid system semireduction...
Abstract Frustrated Lewis pairs (FLPs) have recently been advanced as efficient metal‐free catalysts for catalytic hydrogenation, but their performance in chemoselective particularly heterogeneous systems, has not yet achieved. Herein, we demonstrate that, via tailoring the pore environment within metal–organic frameworks (MOFs), FLPs only can be stabilized also develop interesting hydrogenation of α,β‐unsaturated organic compounds, which cannot achieved with a homogeneous system. Using...
Abstract Herein, a dynamic spacer installation (DSI) strategy has been implemented to construct series of multifunctional metal—organic frameworks (MOFs), LIFM‐61/31/62/63, with optimized pore space and environment for ethane/ethylene separation. In this respect, linear dicarboxylic acids were deliberately installed in the prototype MOF, LIFM‐28, leading dramatically increased volume (from 0.41 0.82 cm 3 g −1 ) reduced size 11.1×11.1 Å 2 5.6×5.6 ). The endows MOFs much higher ethane...