scholarly journals Unsaturated p-Metal-Based Metal–Organic Frameworks for Selective Nitrogen Reduction under Ambient Conditions

2020 ◽  
Vol 12 (40) ◽  
pp. 44830-44839 ◽  
Author(s):  
Yang Fu ◽  
Kangkang Li ◽  
Munkhbayar Batmunkh ◽  
Hai Yu ◽  
Scott Donne ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Ambient Conditions ◽  
Nitrogen Reduction ◽  
Metal Organic

Selective nitrogen reduction to ammonia on iron porphyrin-based single-site metal–organic frameworks

2021 ◽  
Author(s):  
Meiyu Cong ◽  
Xuyang Chen ◽  
Kai Xia ◽  
Xin Ding ◽  
Linlin Zhang ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Value Added ◽  
Single Site ◽  
Iron Porphyrin ◽  
Ambient Conditions ◽  
Nitrogen Reduction ◽  
Metal Organic

Constructing efficient catalysts for N2 reduction into value added ammonia under ambient conditions is a considerable challenge.

Enhancement of Carbon Dioxide Adsorption by Lithium Decorating and Fullerene Encapsulating in Metal-Organic Frameworks

2013 ◽  
Vol 773 ◽  
pp. 927-931
Author(s):  
Rui Feng Lu ◽  
De Wei Rao ◽  
Zhao Shun Meng ◽  
Kai Ming Deng
Keyword(s):  
Metal Organic Frameworks ◽  
Carbon Dioxide Adsorption ◽  
Grand Canonical Monte Carlo ◽  
Ambient Conditions ◽  
Li Doping ◽  
Lithium Doping ◽  
Crystal Density ◽  
Metal Organic ◽  
Density Surface ◽  
Grand Canonical

Using grand canonical Monte Carlo method, the capacities of CO2adsorption in IRMOF-12 and-14 are simulated at ambient conditions. We have theoretically found that CO2uptake can be greatly enhanced by either lithium doping or fullerene impregnating, and the influence of the Li doping is more significant than that of C60impregnation. Furthermore, the CO2storage capacities of IRMOFs after both Li doping and C60impregnating are improved to be about 30 times those of corresponding pristine structures. To further understand the mechanism, we analyzed the distribution pattern of CO2adsorption in materials and investigated the relationships between CO2uptakes and crystal density, surface area per volume and per mass, and pore volume per volume and per mass in detail.

scholarly journals Zirconium-Based Metal Organic Frameworks for the Capture of Carbon Dioxide and Ethanol Vapour. A Comparative Study

Molecules ◽  
2021 ◽  
Vol 26 (24) ◽  
pp. 7620
Author(s):  
Meryem Saidi ◽  
Phuoc Hoang Ho ◽  
Pankaj Yadav ◽  
Fabrice Salles ◽  
Clarence Charnay ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Metal Organic Frameworks ◽  
Van Der Waals Interactions ◽  
Ambient Conditions ◽  
Ethanol Vapour ◽  
Metal Organic ◽  
Experimental Findings ◽  
Two Parameters ◽  
Low Coverage ◽  
Ethanol Adsorption

This paper reports on the comparison of three zirconium-based metal organic frameworks (MOFs) for the capture of carbon dioxide and ethanol vapour at ambient conditions. In terms of efficiency, two parameters were evaluated by experimental and modeling means, namely the nature of the ligands and the size of the cavities. We demonstrated that amongst three Zr-based MOFs, MIP-202 has the highest affinity for CO2 (−50 kJ·mol−1 at low coverage against around −20 kJ·mol−1 for MOF-801 and Muc Zr MOF), which could be related to the presence of amino functions borne by its aspartic acid ligands as well as the presence of extra-framework anions. On the other side, regardless of the ligand size, these three materials were able to adsorb similar amounts of carbon dioxide at 1 atm (between 2 and 2.5 µmol·m−2 at 298 K). These experimental findings were consistent with modeling studies, despite chemisorption effects, which could not be taken into consideration by classical Monte Carlo simulations. Ethanol adsorption confirmed these results, higher enthalpies being found at low coverage for the three materials because of stronger van der Waals interactions. Two distinct sorption processes were proposed in the case of MIP-202 to explain the shape of the enthalpic profiles.

scholarly journals CO2 sensing under ambient conditions using metal–organic frameworks

2020 ◽  
Vol 5 (6) ◽  
pp. 1071-1076
Author(s):  
Bohui Ye ◽  
Andreea Gheorghe ◽  
Roy van Hal ◽  
Marcel Zevenbergen ◽  
Stefania Tanase
Keyword(s):  
Air Quality ◽  
Indoor Air Quality ◽  
Indoor Air ◽  
Metal Organic Frameworks ◽  
Ambient Conditions ◽  
Metal Organic

Determining accurately CO2 levels is highly relevant when monitoring indoor air quality.

Ultrafast room-temperature synthesis of hierarchically porous metal–organic frameworks with high space–time yields

CrystEngComm ◽  
2020 ◽  
Vol 22 (15) ◽  
pp. 2675-2680 ◽  
Author(s):  
Chongxiong Duan ◽  
Yi Yu ◽  
Feier Li ◽  
Ying Wu ◽  
Hongxia Xi
Keyword(s):  
Room Temperature ◽  
Metal Organic Frameworks ◽  
Porous Metal ◽  
Space Time ◽  
Ambient Conditions ◽  
Temperature Synthesis ◽  
Hierarchically Porous ◽  
Room Temperature Synthesis ◽  
Metal Organic ◽  
High Space

We developed a facile and general approach to rapidly synthesize four hierarchically porous MOFs (HKUST-1, ZIF-8, ZIF-61, and ZIF-90) under ambient conditions.

scholarly journals Crystallography of metal–organic frameworks

IUCrJ ◽  
2014 ◽  
Vol 1 (6) ◽  
pp. 563-570 ◽  
Author(s):  
Felipe Gándara ◽  
Thomas D. Bennett
Keyword(s):  
High Pressures ◽  
Metal Organic Frameworks ◽  
Chemical Diversity ◽  
Ambient Conditions ◽  
X Ray Diffraction ◽  
Complex Behaviour ◽  
Surface Areas ◽  
Rate Limiting Step ◽  
Structure Solution ◽  
Metal Organic

Metal–organic frameworks (MOFs) are one of the most intensely studied material types in recent times. Their networks, resulting from the formation of strong bonds between inorganic and organic building units, offer unparalled chemical diversity and pore environments of growing complexity. Therefore, advances in single-crystal X-ray diffraction equipment and techniques are required to characterize materials with increasingly larger surface areas, and more complex linkers. In addition, whilst structure solution from powder diffraction data is possible, the area is much less populated and we detail the current efforts going on here. We also review the growing number of reports on diffraction under non-ambient conditions, including the response of MOF structures to very high pressures. Such experiments are important due to the expected presence of stresses in proposed applications of MOFs – evidence suggesting rich and complex behaviour. Given the entwined and inseparable nature of their structure, properties and applications, it is essential that the field of structural elucidation is able to continue growing and advancing, so as not to provide a rate-limiting step on characterization of their properties and incorporation into devices and applications. This review has been prepared with this in mind.

scholarly journals Packaging and delivering enzymes by amorphous metal-organic frameworks

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Xiaoling Wu ◽  
Hua Yue ◽  
Yuanyu Zhang ◽  
Xiaoyong Gao ◽  
Xiaoyang Li ◽  
...  
Keyword(s):  
Electron Tomography ◽  
Single Cells ◽  
Metal Organic Frameworks ◽  
Enzymatic Catalysis ◽  
Living Cells ◽  
Amorphous Metal ◽  
Precipitation Process ◽  
Ambient Conditions ◽  
One Pot ◽  
Metal Organic

AbstractEnzymatic catalysis in living cells enables the in-situ detection of cellular metabolites in single cells, which could contribute to early diagnosis of diseases. In this study, enzyme is packaged in amorphous metal-organic frameworks (MOFs) via a one-pot co-precipitation process under ambient conditions, exhibiting 5–20 times higher apparent activity than when the enzyme is encapsulated in corresponding crystalline MOFs. Molecular simulation and cryo-electron tomography (Cryo-ET) combined with other techniques demonstrate that the mesopores generated in this disordered and fuzzy structure endow the packaged enzyme with high enzyme activity. The highly active glucose oxidase delivered by the amorphous MOF nanoparticles allows the noninvasive and facile measurement of glucose in single living cells, which can be used to distinguish between cancerous and normal cells.

scholarly journals Single-atom catalysts templated by metal–organic frameworks for electrochemical nitrogen reduction

2019 ◽  
Vol 7 (46) ◽  
pp. 26371-26377 ◽  
Author(s):  
Rui Zhang ◽  
Long Jiao ◽  
Weijie Yang ◽  
Gang Wan ◽  
Hai-Long Jiang
Keyword(s):  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Single Atom ◽  
Excellent Performance ◽  
Acidic Media ◽  
Nitrogen Reduction ◽  
Nitrogen Doped ◽  
Metal Organic ◽  
Nitrogen Doped Carbon ◽  
Organic Framework

Metal–organic framework precursors were employed to fabricate single-atom catalysts, where Fe implanted nitrogen-doped carbon (Fe1-N-C) exhibits excellent performance for electrocatalytic nitrogen reduction in acidic media.

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