Defect Engineering of Copper Paddlewheel-Based Metal–Organic Frameworks of Type NOTT-100: Implementing Truncated Linkers and Its Effect on Catalytic Properties

2020 ◽  
Vol 12 (34) ◽  
pp. 37993-38002 ◽  
Author(s):  
Zhiying Fan ◽  
Junjun Wang ◽  
Weijia Wang ◽  
Stefan Burger ◽  
Zheng Wang ◽  
...  
Keyword(s):  
Catalytic Properties ◽  
Metal Organic Frameworks ◽  
Defect Engineering ◽  
Metal Organic

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 Effect of linker functionalisation on the catalytic properties of Cu nanoclusters embedded in MOFs in direct CO and CO2 reduction by H2

2021 ◽  
Author(s):  
Cornelia Elizabeth Pompe ◽  
Petra Agota Szilagyi
Keyword(s):  
Catalytic Properties ◽  
Metal Organic Frameworks ◽  
Co2 Reduction ◽  
Catalytically Active ◽  
Metal Organic ◽  
Cu Nanoclusters

Metal-organic frameworks are promising host supporting matrices for catalytically active guest. In particular, their crystallinity renders them desirable as their pores may act as atom-precise templates for the growth of...

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...

Small Molecules, Big Effects: Tuning Adsorption and Catalytic Properties of Metal–Organic Frameworks

2021 ◽  
Vol 33 (4) ◽  
pp. 1444-1454
Author(s):  
Xinyao Liu ◽  
Kent O. Kirlikovali ◽  
Zhijie Chen ◽  
Kaikai Ma ◽  
Karam B. Idrees ◽  
...  
Keyword(s):  
Small Molecules ◽  
Catalytic Properties ◽  
Metal Organic Frameworks ◽  
Metal Organic

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.

scholarly journals Tuning the Mechanical Response of Metal–Organic Frameworks by Defect Engineering

2018 ◽  
Vol 140 (37) ◽  
pp. 11581-11584 ◽  
Author(s):  
Stefano Dissegna ◽  
Pia Vervoorts ◽  
Claire L. Hobday ◽  
Tina Düren ◽  
Dominik Daisenberger ◽  
...  
Keyword(s):  
Mechanical Response ◽  
Metal Organic Frameworks ◽  
Defect Engineering ◽  
Metal Organic
Sign in / Sign up

Export Citation Format

Share Document