Tailoring the water adsorption properties of MIL-101 metal–organic frameworks by partial functionalization

2015 ◽  
Vol 3 (5) ◽  
pp. 2057-2064 ◽  
Author(s):  
Nakeun Ko ◽  
Pan Gyu Choi ◽  
Jisu Hong ◽  
Miso Yeo ◽  
Siyoung Sung ◽  
...  
Keyword(s):  
Water Uptake ◽  
Water Adsorption ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Low Pressure ◽  
Adsorption Properties ◽  
Uptake Capacity ◽  
Water Uptake Capacity ◽  
Metal Organic ◽  
Organic Framework

Partial functionalization of the metal–organic framework, MIL-101, with –COOH groups is proven effective for enhancing the water uptake capacity at low pressure.

A significant enhancement of water vapour uptake at low pressure by amine-functionalization of UiO-67

2015 ◽  
Vol 44 (5) ◽  
pp. 2047-2051 ◽  
Author(s):  
Nakeun Ko ◽  
Jisu Hong ◽  
Siyoung Sung ◽  
Kyle E. Cordova ◽  
Hye Jeong Park ◽  
...  
Keyword(s):  
Water Vapour ◽  
Water Uptake ◽  
Metal Organic Framework ◽  
Significant Enhancement ◽  
Relative Pressure ◽  
Amine Functionalization ◽  
Uptake Capacity ◽  
Water Uptake Capacity ◽  
Metal Organic ◽  
Water Vapour Uptake

The functionalization of the metal–organic framework, UiO-67, with –NH2 groups is proven effective for increasing the water uptake capacity at low relative pressure at 298 K.

scholarly journals Crystallographic characterization of the metal–organic framework Fe2(bdp)3 upon reductive cation insertion

2020 ◽  
Vol 11 (34) ◽  
pp. 9173-9180 ◽  
Author(s):  
Naomi Biggins ◽  
Michael E. Ziebel ◽  
Miguel I. Gonzalez ◽  
Jeffrey R. Long
Keyword(s):  
Single Crystal ◽  
Gas Adsorption ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Adsorption Properties ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metal Organic ◽  
Organic Framework

Single-crystal X-ray diffraction reveals structural influences on gas adsorption properties in anionic metal–organic frameworks.

Pyridinium linkers and mixed anions in cationic metal–organic frameworks

2014 ◽  
Vol 1 (4) ◽  
pp. 302-305 ◽  
Author(s):  
Jian-Bin Lin ◽  
George K. H. Shimizu
Keyword(s):  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Uptake Capacity ◽  
Metal Organic ◽  
Organic Framework

Mixing anions in a cationic metal–organic framework with pyridinium linkers significantly enhances CO2 selectivity and uptake capacity.

Design and preparation of new luminescent metal–organic frameworks and different doped isomers: sensing pollution ions and enhancement of gas capture capacity

2021 ◽  
Author(s):  
Dan Wu ◽  
Jianguo Cheng ◽  
Meng Wang ◽  
Jiao Liu ◽  
Jing Jin ◽  
...  
Keyword(s):  
Gas Adsorption ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Adsorption Properties ◽  
Metal Organic ◽  
New Type ◽  
Capture Capacity ◽  
Organic Framework

A new type of luminescent metal–organic framework (MOF) and different doped isomers were designed and prepared to detect pollutant ions and enhance gas adsorption properties.

scholarly journals Unravelling the water adsorption in a robust iron carboxylate metal–organic framework

2020 ◽  
Vol 56 (67) ◽  
pp. 9628-9631
Author(s):  
Dirk Lenzen ◽  
Jakob G. Eggebrecht ◽  
Paulo G. M. Mileo ◽  
Dominik Fröhlich ◽  
Stefan Henninger ◽  
...  
Keyword(s):  
Water Adsorption ◽  
Metal Organic Framework ◽  
Scale Up ◽  
Molecular Simulations ◽  
Adsorption Properties ◽  
Metal Organic ◽  
Iron Carboxylate ◽  
Organic Framework

Scale-up of an Fe-MOF and elucidation of its water adsorption properties by PXRD, sorption measurements and molecular simulations are reported.

scholarly journals Coordination Modulated On-Off Switching of Flexibility in a Metal-organic Framework

2021 ◽  
Author(s):  
jorge Albalad ◽  
Ricardo Peralta ◽  
Michael Huxley ◽  
Steven Tsoukatos ◽  
Zhaolin Shi ◽  
...  
Keyword(s):  
Structural Changes ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Adsorption Properties ◽  
Stimuli Responsive ◽  
Metal Organic ◽  
External Stimuli ◽  
Organic Framework

Stimuli-responsive metal-organic frameworks (MOFs) exhibit dynamic, and typically reversible, structural changes upon exposure to external stimuli. This process often induces drastic changes in their adsorption properties. Herein, we present a...

Magnetic Ordering via Itinerant Ferromagnetism in a Metal-Organic Framework

2020 ◽  
Author(s):  
Jesse Park ◽  
Brianna Collins ◽  
Lucy Darago ◽  
Tomce Runcevski ◽  
Michael Aubrey ◽  
...  
Keyword(s):  
Charge Transport ◽  
Magnetic Order ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Magnetic Ordering ◽  
Double Exchange ◽  
Itinerant Ferromagnetism ◽  
Organic Solids ◽  
Metal Organic ◽  
Organic Framework

<b>Materials that combine magnetic order with other desirable physical attributes offer to revolutionize our energy landscape. Indeed, such materials could find transformative applications in spintronics, quantum sensing, low-density magnets, and gas separations. As a result, efforts to design multifunctional magnetic materials have recently moved beyond traditional solid-state materials to metal–organic solids. Among these, metal–organic frameworks in particular bear structures that offer intrinsic porosity, vast chemical and structural programmability, and tunability of electronic properties. Nevertheless, magnetic order within metal–organic frameworks has generally been limited to low temperatures, owing largely to challenges in creating strong magnetic exchange in extended metal–organic solids. Here, we employ the phenomenon of itinerant ferromagnetism to realize magnetic ordering at <i>T</i><sub>C</sub> = 225 K in a mixed-valence chromium(II/III) triazolate compound, representing the highest ferromagnetic ordering temperature yet observed in a metal–organic framework. The itinerant ferromagnetism is shown to proceed via a double-exchange mechanism, the first such observation in any metal–organic material. Critically, this mechanism results in variable-temperature conductivity with barrierless charge transport below <i>T</i><sub>C</sub> and a large negative magnetoresistance of 23% at 5 K. These observations suggest applications for double-exchange-based coordination solids in the emergent fields of magnetoelectrics and spintronics. Taken together, the insights gleaned from these results are expected to provide a blueprint for the design and synthesis of porous materials with synergistic high-temperature magnetic and charge transport properties. </b>

Solvent-Free Powder Synthesis and MOF-CVD Thin Films of the Mesoporous Metal-Organic Framework MAF-6

2019 ◽  
Author(s):  
Timothée Stassin ◽  
Ivo Stassen ◽  
Joao Marreiros ◽  
Alexander John Cruz ◽  
Rhea Verbeke ◽  
...  
Keyword(s):  
Vapor Phase ◽  
Metal Organic Framework ◽  
Chemical Vapor ◽  
Uptake Capacity ◽  
Powder Synthesis ◽  
Crystalline Films ◽  
Metal Organic ◽  
Mesoporous Metal ◽  
First Time ◽  
Organic Framework

A simple solvent- and catalyst-free method is presented for the synthesis of the mesoporous metal-organic framework (MOF) MAF-6 (RHO-Zn(eIm)2) based on the reaction of ZnO with 2-ethylimidazole vapor at temperatures ≤ 100 °C. By translating this method to a chemical vapor deposition (CVD) protocol, mesoporous crystalline films could be deposited for the first time entirely from the vapor phase. A combination of PALS and Kr physisorption measurements confirmed the porosity of these MOF-CVD films and the size of the MAF-6 supercages (diam. ~2 nm), in close agreement with powder data and calculations. MAF-6 powders and films were further characterized by XRD, TGA, SEM, FTIR, PDF and EXAFS. The exceptional uptake capacity of the mesoporous MAF-6 in comparison to the microporous ZIF-8 is demonstrated by vapor-phase loading of a molecule larger than the ZIF-8 windows.

An Overview of Metal-organic Frameworks-based Acid/Base Catalysts for Biofuel Synthesis

2020 ◽  
Vol 24 (16) ◽  
pp. 1876-1891
Author(s):  
Qiuyun Zhang ◽  
Yutao Zhang ◽  
Jingsong Cheng ◽  
Hu Li ◽  
Peihua Ma
Keyword(s):  
Alternative Fuels ◽  
Heterogeneous Catalysts ◽  
Supported Catalysts ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Flexible Structures ◽  
Biodiesel Production ◽  
Biodiesel Synthesis ◽  
Metal Organic ◽  
Organic Framework

Biofuel synthesis is of great significance for producing alternative fuels. Among the developed catalytic materials, the metal-organic framework-based hybrids used as acidic, basic, or supported catalysts play major roles in the biodiesel production. This paper presents a timely and comprehensive review of recent developments on the design and preparation of metal-organic frameworks-based catalysts used for biodiesel synthesis from various oil feedstocks, including MILs-based catalysts, ZIFs-based catalysts, UiO-based catalysts, Cu-BTC-based catalysts, and MOFs-derived porous catalysts. Due to their unique and flexible structures, excellent thermal and hydrothermal stability, and tunable host-guest interactions, as compared with other heterogeneous catalysts, metal-organic framework-based catalysts have good opportunities for application in the production of biodiesel at industrial scale.

scholarly journals Crystal growth of the core and rotated epitaxial shell of a heterometallic metal-organic framework revealed with atomic force microscopy

2021 ◽  
Author(s):  
Fajar Inggit Pambudi ◽  
Michael William Anderson ◽  
Martin Attfield
Keyword(s):  
Atomic Force Microscopy ◽  
Crystal Growth ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Force Microscopy ◽  
The Core ◽  
Atomic Force ◽  
Metal Organic ◽  
Surface Crystal ◽  
Organic Framework

Atomic force microscopy has been used to determine the surface crystal growth of two isostructural metal-organic frameworks, [Zn2(ndc)2(dabco)] (ndc = 1,4-naphthalene dicarboxylate, dabco = 4-diazabicyclo[2.2.2]octane) (1) and [Cu2(ndc)2(dabco)] (2) from...

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