scholarly journals Using Supercritical CO2 in the Preparation of Metal-Organic Frameworks: Investigating Effects on Crystallisation

Crystals ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 17 ◽  
Author(s):  
Huan Doan ◽  
Fei Cheng ◽  
Thandeka Dyirakumunda ◽  
Mark Elsegood ◽  
Jiamin Chin ◽  
...  
Keyword(s):  
Low Temperatures ◽  
Supercritical Co2 ◽  
Crystal Size ◽  
Solvothermal Method ◽  
Metal Organic Frameworks ◽  
Product Yields ◽  
Metal Organic ◽  
Size And Morphology

In this report, we explore the use of supercritical CO2 (scCO2) in the synthesis of well-known metal-organic frameworks (MOFs) including Zn-MOF-74 and UiO-66, as well as on the preparation of [Cu24(OH-mBDC)24]n metal-organic polyhedra (MOPs) and two new MOF structures {[Zn2(L1)(DPE)]∙4H2O}n and {[Zn3(L1)3(4,4′-azopy)]∙7.5H2O}n, where BTC = benzene-1,3,5-tricarboxylate, BDC = benzene-1,4-dicarboxylate, L1 = 4-carboxy-phenylene-methyleneamino-4-benzoate, DPE = 1,2-di(4-pyridyl)ethylene, 4.4′-azopy = 4,4′- azopyridine, and compare the results versus traditional solvothermal preparations at low temperatures (i.e., 40 °C). The objective of the work was to see if the same or different products would result from the scCO2 route versus the solvothermal method. We were interested to see which method produced the highest yield, the cleanest product and what types of morphology resulted. While there was no evidence of additional meso- or macroporosity in these MOFs/MOPs nor any significant improvements in product yields through the addition of scCO2 to these systems, it was shown that the use of scCO2 can have an effect on crystallinity, crystal size and morphology.

Surviving Under Pressure: The Role of Solvent, Crystal Size, and Morphology During Pelletization of Metal–Organic Frameworks

2021 ◽  
Author(s):  
Timothy C. Wang ◽  
Ashley M. Wright ◽  
William J. Hoover ◽  
Kevin J. Stoffel ◽  
Rachelle K. Richardson ◽  
...  
Keyword(s):  
Crystal Size ◽  
Metal Organic Frameworks ◽  
Metal Organic ◽  
Size And Morphology ◽  
Role Of Solvent

From Micro to Nano: A Toolbox for Tuning Crystal Size and Morphology of Benzotriazolate-Based Metal–Organic Frameworks

2016 ◽  
Vol 16 (6) ◽  
pp. 3190-3197 ◽  
Author(s):  
Hana Bunzen ◽  
Maciej Grzywa ◽  
Manuel Hambach ◽  
Sebastian Spirkl ◽  
Dirk Volkmer
Keyword(s):  
Crystal Size ◽  
Metal Organic Frameworks ◽  
Metal Organic ◽  
Size And Morphology

3D hollow cage copper cobalt sulfide derived from metal–organic frameworks for high-performance asymmetric supercapacitors

CrystEngComm ◽  
2021 ◽  
Author(s):  
Jiaqi Wang ◽  
Yiling Quan ◽  
Guoxiang Wang ◽  
Dazhi Wang ◽  
Jie Xiao ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
High Performance ◽  
Solvothermal Method ◽  
Metal Organic Frameworks ◽  
Cobalt Sulfide ◽  
Large Specific Surface Area ◽  
Asymmetric Supercapacitors ◽  
Metal Organic ◽  
One Step

Metal–organic frameworks (MOFs) attracted considerable attention through their large specific surface area and excellent adjustable voids. A one-step solvothermal method is proposed herein to fabricate the 3D hollow cage copper-cobalt...

scholarly journals Electrochemical Aptasensors Based on Hybrid Metal-Organic Frameworks

Sensors ◽  
2020 ◽  
Vol 20 (23) ◽  
pp. 6963
Author(s):  
Gennady Evtugyn ◽  
Svetlana Belyakova ◽  
Anna Porfireva ◽  
Tibor Hianik
Keyword(s):  
Electrochemical Sensors ◽  
Metal Organic Frameworks ◽  
High Porosity ◽  
Future Trends ◽  
Literature Information ◽  
Variable Size ◽  
Metal Organic ◽  
Signal Mode ◽  
Size And Morphology

Metal-organic frameworks (MOFs) offer a unique variety of properties and morphology of the structure that make it possible to extend the performance of existing and design new electrochemical biosensors. High porosity, variable size and morphology, compatibility with common components of electrochemical sensors, and easy combination with bioreceptors make MOFs very attractive for application in the assembly of electrochemical aptasensors. In this review, the progress in the synthesis and application of the MOFs in electrochemical aptasensors are considered with an emphasis on the role of the MOF materials in aptamer immobilization and signal generation. The literature information of the use of MOFs in electrochemical aptasensors is classified in accordance with the nature and role of MOFs and a signal mode. In conclusion, future trends in the application of MOFs in electrochemical aptasensors are briefly discussed.

scholarly journals Magnetic ordering in TCNQ-based metal–organic frameworks with host–guest interactions

2015 ◽  
Vol 2 (10) ◽  
pp. 904-911 ◽  
Author(s):  
Xuan Zhang ◽  
Mohamed R. Saber ◽  
Andrey P. Prosvirin ◽  
Joseph H. Reibenspies ◽  
Lei Sun ◽  
...  
Keyword(s):  
Low Temperatures ◽  
Spontaneous Magnetization ◽  
Metal Organic Frameworks ◽  
Magnetic Ordering ◽  
Aromatic Molecules ◽  
Metal Organic ◽  
Magnetization Behavior

Host–guest interactions between the TCNQ-based MOF and aromatic molecules have been found to modulate spontaneous magnetization behavior at low temperatures.

Ir-Doped Ni-based metal–organic framework ultrathin nanosheets on Ni foam for enhanced urea electro-oxidation

2020 ◽  
Vol 56 (14) ◽  
pp. 2151-2154 ◽  
Author(s):  
You Xu ◽  
Xingjie Chai ◽  
Tianlun Ren ◽  
Shanshan Yu ◽  
Hongjie Yu ◽  
...  
Keyword(s):  
Solvothermal Method ◽  
Nickel Foam ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Ni Foam ◽  
Ultrathin Nanosheets ◽  
Metal Organic ◽  
Electro Oxidation ◽  
Organic Framework

NiIr-based metal–organic frameworks grown on a nickel foam substrate (NiIr-MOF/NF) are synthesized by a solvothermal method and directly used for urea electro-oxidation.

scholarly journals Adsorptive, kinetics and regeneration studies of fluoride removal from water using zirconium-based metal organic frameworks

RSC Advances ◽  
2020 ◽  
Vol 10 (32) ◽  
pp. 18740-18752 ◽  
Author(s):  
Tong Ling Tan ◽  
Poovarasi A/P Krusnamurthy ◽  
Hideki Nakajima ◽  
Suraya Abdul Rashid
Keyword(s):  
Lattice Spacing ◽  
Solvothermal Method ◽  
Metal Organic Frameworks ◽  
Fluoride Removal ◽  
Metal Organic ◽  
Facile Solvothermal Method

A facile solvothermal method is used to prepare octahedral MOF-801 with a lattice spacing of 0.304 nm representative of ZrO2 (011) planes for water defluorination.

Metal–Organic Frameworks Precipitated by Reactive Crystallization in Supercritical CO2

2017 ◽  
Vol 17 (5) ◽  
pp. 2864-2872 ◽  
Author(s):  
Ana M. López-Periago ◽  
Nuria Portoles-Gil ◽  
Pedro López-Domínguez ◽  
Julio Fraile ◽  
Javier Saurina ◽  
...  
Keyword(s):  
Supercritical Co2 ◽  
Metal Organic Frameworks ◽  
Metal Organic ◽  
Reactive Crystallization
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