Synthesis, characterisation, water adsorption and proton conductivity of three Cd(ii) based luminescent metal–organic frameworks

2014 ◽  
Vol 1 (8) ◽  
pp. 611-620 ◽  
Author(s):  
Srinivasulu Parshamoni ◽  
Himanshu Sekhar Jena ◽  
Suresh Sanda ◽  
Sanjit Konar
Keyword(s):  
Water Vapor ◽  
Relative Humidity ◽  
Proton Conductivity ◽  
Water Adsorption ◽  
Metal Organic Frameworks ◽  
Impedance Measurement ◽  
Metal Organic ◽  
Higher Temperature

Three Cd(ii) based H-bonded 3D MOFs show a significant amount of uptake for water vapor and an impedance measurement indicates that they show proton conductivity at a higher temperature (358 K) at 95% relative humidity.

Metal–organic frameworks derived from a semi-rigid anthracene-based ligand and sulfonates: proton conductivity and dye degradation studies

CrystEngComm ◽  
2021 ◽  
Author(s):  
Aurobinda Mohanty ◽  
Udai P. Singh ◽  
Arijit Ghorai ◽  
Susanta Banerjee ◽  
R. J. Butcher
Keyword(s):  
Methylene Blue ◽  
Relative Humidity ◽  
Proton Conductivity ◽  
Dye Degradation ◽  
Metal Organic Frameworks ◽  
High Proton Conductivity ◽  
Methylene Blue Degradation ◽  
High Proton ◽  
Metal Organic ◽  
Degradation Studies

The MOFs were constructed by ligand AHP and sulfonate analogues. MOF4 exhibits a high proton conductivity of 1.95 × 10−3 S cm−1 at 95 °C and 98% relative humidity. MOFs 1–5 also serve as photocatalysts for methylene blue degradation.

Tuning water adsorption, stability, and phase in Fe-MIL-101 and Fe-MIL-88 analogs with amide functionalization

2021 ◽  
Author(s):  
Andrew Kuznicki ◽  
Gregory Lorzing ◽  
Eric D Bloch
Keyword(s):  
Water Adsorption ◽  
Metal Organic Frameworks ◽  
High Tunability ◽  
Metal Organic

Metal-organic frameworks (MOFs) of the MIL series of materials have been widely studied as a result of their high tunability and the diversity of structure types that exist for these...

scholarly journals High-Frequency Water Vapor Sorption Cycling Using Fluidization of Metal-Organic Frameworks

2020 ◽  
Vol 1 (5) ◽  
pp. 100057
Author(s):  
Alexandros Terzis ◽  
Ashwin Ramachandran ◽  
Kecheng Wang ◽  
Mehdi Asheghi ◽  
Kenneth E. Goodson ◽  
...  
Keyword(s):  
Water Vapor ◽  
High Frequency ◽  
Metal Organic Frameworks ◽  
Water Vapor Sorption ◽  
Vapor Sorption ◽  
Metal Organic

scholarly journals The role of lattice vibration in the terahertz region for proton conduction in 2D metal–organic frameworks

2020 ◽  
Vol 11 (6) ◽  
pp. 1538-1541
Author(s):  
Tomoya Itakura ◽  
Hiroshi Matsui ◽  
Tomofumi Tada ◽  
Susumu Kitagawa ◽  
Aude Demessence ◽  
...  
Keyword(s):  
Proton Conductivity ◽  
Electronic Structures ◽  
Lattice Vibration ◽  
Metal Organic Frameworks ◽  
Proton Conduction ◽  
Terahertz Region ◽  
Metal Organic

Terahertz-regime vibrations of 2D MOFs dominate the intrinsic proton conductivity, and the motions depend on the valence electronic structures.

scholarly journals Dielectric Spectroscopy of Water Dynamics in Functionalized UiO-66 Metal-Organic Frameworks

Molecules ◽  
2020 ◽  
Vol 25 (8) ◽  
pp. 1962
Author(s):  
Sergejus Balčiūnas ◽  
Diana Pavlovaitė ◽  
Martynas Kinka ◽  
Jyun-Yi Yeh ◽  
Po-Chun Han ◽  
...  
Keyword(s):  
Dielectric Spectroscopy ◽  
Metal Organic Frameworks ◽  
Water Dynamics ◽  
Water Molecules ◽  
Arrhenius Law ◽  
Dipolar Relaxation ◽  
Metal Organic ◽  
Higher Temperature ◽  
Sudden Decrease ◽  
Increasing Temperature

We present a dielectric spectroscopy study of dipolar dynamics in the hydrated UiO-66(Zr) type metal-organic frameworks (MOFs) functionalized with −NH2 and −F groups. Experiments are performed in a broad temperature and frequency ranges allowing us to probe several dipolar relaxations. For both samples at temperature below 220 K, we observe confined supercooled water dynamics, which can be described by the Arrhenius law. At slightly higher temperature, a second less pronounced dipolar relaxation is identified, and its origin is discussed. At even higher temperature, the dielectric permittivity exhibits anomalous increase with increasing temperature due to the proton conductivity. Upon further heating, the permittivity shows a sudden decrease indicating a reversible removal of water molecules. Measurements of the dehydrated samples reveal absence of all three dipolar processes.

Underoil superhydrophilic surfaces: water adsorption in metal–organic frameworks

2018 ◽  
Vol 6 (4) ◽  
pp. 1692-1699 ◽  
Author(s):  
Mingming Liu ◽  
Lu Tie ◽  
Jing Li ◽  
Yuanyuan Hou ◽  
Zhiguang Guo
Keyword(s):  
Crude Oil ◽  
Water Adsorption ◽  
Metal Organic Frameworks ◽  
Building Blocks ◽  
Water Filtration ◽  
On Demand ◽  
Emulsion Separation ◽  
Metal Organic ◽  
Self Cleaning ◽  
Superhydrophilic Surfaces

Inspired by sarcocarps, metal–organic frameworks (MOFs) that can capture moisture spontaneously are presented as building blocks for the construction of underoil superhydrophilic surfaces. The MOF coating showed excellent self-cleaning properties to crude oil under water, and achieved on-demand emulsion separation through selective water filtration and adsorption.

scholarly journals High proton conductivity in cyanide-bridged metal–organic frameworks: understanding the role of water

2015 ◽  
Vol 3 (44) ◽  
pp. 22347-22352 ◽  
Author(s):  
Yuan Gao ◽  
Richard Broersen ◽  
Wouter Hageman ◽  
Ning Yan ◽  
Marjo C. Mittelmeijer-Hazeleger ◽  
...  
Keyword(s):  
Proton Conductivity ◽  
Metal Organic Frameworks ◽  
Water Molecules ◽  
High Proton Conductivity ◽  
Lattice Water ◽  
High Proton ◽  
Metal Organic

Hop hop hop: the proton conductivity of the [Nd(mpca)2Nd(H2O)6Mo(CN)8]·nH2O is enabled by lattice water molecules in its channels.

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