Defect engineering in metal–organic frameworks: a new strategy to develop applicable actinide sorbents

2018 ◽  
Vol 54 (4) ◽  
pp. 370-373 ◽  
Author(s):  
Liyong Yuan ◽  
Ming Tian ◽  
Jianhui Lan ◽  
Xingzhong Cao ◽  
Xiaolin Wang ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Defect Engineering ◽  
New Strategy ◽  
Metal Organic ◽  
Highly Porous

A greatly enhanced U(vi) loading in MOFs was achieved by tuning the missing-linker defects of highly porous and stable UiO-66.

Engineering Porosity Through Defects in a Giant Pore Metal–Organic Framework

2020 ◽  
Author(s):  
Adam Sapnik ◽  
Duncan Johnstone ◽  
Sean M. Collins ◽  
Giorgio Divitini ◽  
Alice Bumstead ◽  
...  
Keyword(s):  
Distribution Function ◽  
Ball Milling ◽  
Local Structure ◽  
Pair Distribution Function ◽  
Function Analysis ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Defect Engineering ◽  
Metal Organic ◽  
Unsaturated Metal Sites

<p>Defect engineering is a powerful tool that can be used to tailor the properties of metal–organic frameworks (MOFs). Here, we incorporate defects through ball milling to systematically vary the porosity of the giant pore MOF, MIL-100 (Fe). We show that milling leads to the breaking of metal–linker bonds, generating more coordinatively unsaturated metal sites, and ultimately causes amorphisation. Pair distribution function analysis shows the hierarchical local structure is partially</p><p>retained, even in the amorphised material. We find that the solvent toluene stabilises the MIL-100 (Fe) framework against collapse and leads to a substantial rentention of porosity over the non-stabilised material.</p>

scholarly journals Linker depletion for missing cluster defects in non-UiO Metal-Organic Frameworks

2021 ◽  
Author(s):  
Isabel Abánades Lázaro ◽  
Neyvis Almora-Barrios ◽  
Sergio Tatay ◽  
Catalin Popescu ◽  
Carlos Martí-Gastaldo
Keyword(s):  
Metal Organic Frameworks ◽  
Defect Chemistry ◽  
Defect Engineering ◽  
Preferential Formation ◽  
Metal Organic

Defect engineering is a valuable tool to tune the properties of Metal-Organic Frameworks. However, defect chemistry remains still predominantly limited to UiO-type MOFs. We describe the preferential formation of missing...

Supermolecular Building Blocks (SBBs) for the Design and Synthesis of Highly Porous Metal-Organic Frameworks

2008 ◽  
Vol 130 (6) ◽  
pp. 1833-1835 ◽  
Author(s):  
Farid Nouar ◽  
Jarrod F. Eubank ◽  
Till Bousquet ◽  
Lukasz Wojtas ◽  
Michael J. Zaworotko ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Porous Metal ◽  
Building Blocks ◽  
Design And Synthesis ◽  
Metal Organic ◽  
Highly Porous

scholarly journals Band Gap Modulation in Zirconium-Based Metal-Organic Frameworks by Defect Engineering

2019 ◽  
Author(s):  
Marco Taddei ◽  
Giulia M. Schukraft ◽  
Michael E. A. Warwick ◽  
Davide Tiana ◽  
Matthew McPherson ◽  
...  
Keyword(s):  
Band Gap ◽  
Gas Phase ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Benzoic Acids ◽  
Defect Engineering ◽  
Metal Organic ◽  
Band Gap Modulation ◽  
Valence Band Energy ◽  
Defective Sites

We report a defect-engineering approach to modulate the band gap of zirconium-based metal-organic framework UiO-66, enabled by grafting of a range of amino-functionalised benzoic acids at defective sites. Defect engineered MOFs were obtained by both post-synthetic exchange and modulated synthesis, featuring band gap in the 4.1-3.3 eV range. Ab-initio calculations suggest that shrinking of the band gap is mainly due to an upward shift of the valence band energy, as a result of the presence of light-absorbing monocarboxylates. The photocatalytic properties of defect-engineered MOFs towards CO<sub>2</sub> reduction to CO in the gas phase and degradation of Rhodamine B in water were tested, observing improved activity in both cases, in comparison to a defective UiO-66 bearing formic acid as the defect-compensating species.

ChemInform Abstract: Topotactic Transformations of Metal-Organic Frameworks to Highly Porous and Stable Inorganic Sorbents for Efficient Radionuclide Sequestration.

ChemInform ◽  
2014 ◽  
Vol 45 (46) ◽  
pp. no-no
Author(s):  
Carter W. Abney ◽  
Kathryn M. L. Taylor-Pashow ◽  
Shane R. Russell ◽  
Yuan Chen ◽  
Raghabendra Samantaray ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Metal Organic ◽  
Highly Porous

scholarly journals Temperature Treatment of Highly Porous Zirconium-Containing Metal–Organic Frameworks Extends Drug Delivery Release

2017 ◽  
Vol 139 (22) ◽  
pp. 7522-7532 ◽  
Author(s):  
Michelle H. Teplensky ◽  
Marcus Fantham ◽  
Peng Li ◽  
Timothy C. Wang ◽  
Joshua P. Mehta ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Metal Organic Frameworks ◽  
Temperature Treatment ◽  
Metal Organic ◽  
Highly Porous

A Method for the Preparation of Highly Porous, Nanosized Crystals of Isoreticular Metal−Organic Frameworks

2011 ◽  
Vol 11 (1) ◽  
pp. 185-189 ◽  
Author(s):  
Mingyan Ma ◽  
Denise Zacher ◽  
Xiaoning Zhang ◽  
Roland A. Fischer ◽  
Nils Metzler-Nolte
Keyword(s):  
Metal Organic Frameworks ◽  
Metal Organic ◽  
Highly Porous ◽  
Nanosized Crystals

Adsorption behavior and structure transformation of mesoporous metal–organic frameworks towards arsenates and organic pollutants in aqueous solution

2018 ◽  
Vol 2 (7) ◽  
pp. 1389-1396 ◽  
Author(s):  
Jianhua Cai ◽  
Xuhui Mao ◽  
Wei-Guo Song
Keyword(s):  
Aqueous Solution ◽  
Organic Pollutants ◽  
Metal Organic Frameworks ◽  
Adsorption Behavior ◽  
Structure Transformation ◽  
Adsorptive Removal ◽  
Metal Organic ◽  
Mesoporous Metal ◽  
Highly Porous

Highly porous, water stable metal–organic frameworks, MIL-100(Fe,Al), were investigated for the adsorptive removal of arsenates.

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