Bifunctional PGM-free metal organic framework-based electrocatalysts for alkaline electrolyzers: trends in the activity with different metal centers

Nanoscale ◽  
2021 ◽  
Author(s):  
Wenjamin Moschkowitsch ◽  
Shmuel Gonen ◽  
Kapil Dhaka ◽  
Noam Zion ◽  
Hilah Honig ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Electrocatalytic Activity ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Metal Centers ◽  
Metal Organic ◽  
Free Metal ◽  
Organic Framework

Several composites of metal organic frameworks with electrocatalytic activity toward OER and HER were studied. A trend of the activity among the different metals was observed for both reactions and was confirmed by DFT calculations.

Revisiting the structural homogeneity of NU-1000, a Zr-based metal–organic framework

CrystEngComm ◽  
2018 ◽  
Vol 20 (39) ◽  
pp. 5913-5918 ◽  
Author(s):  
Timur Islamoglu ◽  
Ken-ichi Otake ◽  
Peng Li ◽  
Cassandra T. Buru ◽  
Aaron W. Peters ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Structure Property ◽  
Structural Homogeneity ◽  
Structure Property Relationships ◽  
Phase Pure ◽  
Metal Organic ◽  
Free Metal ◽  
Organic Framework

Synthesis and activation of phase-pure and defect-free metal–organic frameworks (MOFs) are essential for establishing accurate structure–property relationships.

Adsorption of two gas molecules at a single metal site in a metal–organic framework

2016 ◽  
Vol 52 (53) ◽  
pp. 8251-8254 ◽  
Author(s):  
Tomče Runčevski ◽  
Matthew T. Kapelewski ◽  
Rodolfo M. Torres-Gavosto ◽  
Jacob D. Tarver ◽  
Craig M. Brown ◽  
...  
Keyword(s):  
Storage Capacity ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Gas Storage ◽  
Metal Centers ◽  
Metal Site ◽  
Metal Organic ◽  
Gas Molecules ◽  
Organic Framework

One strategy to markedly increase the gas storage capacity of metal–organic frameworks is to introduce coordinatively-unsaturated metal centers capable of binding multiple gas molecules.

Co9S8@carbon porous nanocages derived from a metal–organic framework: a highly efficient bifunctional catalyst for aprotic Li–O2 batteries

2018 ◽  
Vol 6 (18) ◽  
pp. 8595-8603 ◽  
Author(s):  
Yaying Dou ◽  
Ruqian Lian ◽  
Yantao Zhang ◽  
Yingying Zhao ◽  
Gang Chen ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Electrocatalytic Activity ◽  
Metal Organic Framework ◽  
Bifunctional Catalyst ◽  
Highly Efficient ◽  
Metal Organic ◽  
First Time ◽  
Organic Framework

The highly efficient bifunctional electrocatalytic activity of Co9S8@CPNs was confirmed by experiments and DFT calculations in aprotic Li–O2 batteries for the first time.

Magnetic Ordering via Itinerant Ferromagnetism in a Metal-Organic Framework

2020 ◽  
Author(s):  
Jesse Park ◽  
Brianna Collins ◽  
Lucy Darago ◽  
Tomce Runcevski ◽  
Michael Aubrey ◽  
...  
Keyword(s):  
Charge Transport ◽  
Magnetic Order ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Magnetic Ordering ◽  
Double Exchange ◽  
Itinerant Ferromagnetism ◽  
Organic Solids ◽  
Metal Organic ◽  
Organic Framework

<b>Materials that combine magnetic order with other desirable physical attributes offer to revolutionize our energy landscape. Indeed, such materials could find transformative applications in spintronics, quantum sensing, low-density magnets, and gas separations. As a result, efforts to design multifunctional magnetic materials have recently moved beyond traditional solid-state materials to metal–organic solids. Among these, metal–organic frameworks in particular bear structures that offer intrinsic porosity, vast chemical and structural programmability, and tunability of electronic properties. Nevertheless, magnetic order within metal–organic frameworks has generally been limited to low temperatures, owing largely to challenges in creating strong magnetic exchange in extended metal–organic solids. Here, we employ the phenomenon of itinerant ferromagnetism to realize magnetic ordering at <i>T</i><sub>C</sub> = 225 K in a mixed-valence chromium(II/III) triazolate compound, representing the highest ferromagnetic ordering temperature yet observed in a metal–organic framework. The itinerant ferromagnetism is shown to proceed via a double-exchange mechanism, the first such observation in any metal–organic material. Critically, this mechanism results in variable-temperature conductivity with barrierless charge transport below <i>T</i><sub>C</sub> and a large negative magnetoresistance of 23% at 5 K. These observations suggest applications for double-exchange-based coordination solids in the emergent fields of magnetoelectrics and spintronics. Taken together, the insights gleaned from these results are expected to provide a blueprint for the design and synthesis of porous materials with synergistic high-temperature magnetic and charge transport properties. </b>

An Overview of Metal-organic Frameworks-based Acid/Base Catalysts for Biofuel Synthesis

2020 ◽  
Vol 24 (16) ◽  
pp. 1876-1891
Author(s):  
Qiuyun Zhang ◽  
Yutao Zhang ◽  
Jingsong Cheng ◽  
Hu Li ◽  
Peihua Ma
Keyword(s):  
Alternative Fuels ◽  
Heterogeneous Catalysts ◽  
Supported Catalysts ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Flexible Structures ◽  
Biodiesel Production ◽  
Biodiesel Synthesis ◽  
Metal Organic ◽  
Organic Framework

Biofuel synthesis is of great significance for producing alternative fuels. Among the developed catalytic materials, the metal-organic framework-based hybrids used as acidic, basic, or supported catalysts play major roles in the biodiesel production. This paper presents a timely and comprehensive review of recent developments on the design and preparation of metal-organic frameworks-based catalysts used for biodiesel synthesis from various oil feedstocks, including MILs-based catalysts, ZIFs-based catalysts, UiO-based catalysts, Cu-BTC-based catalysts, and MOFs-derived porous catalysts. Due to their unique and flexible structures, excellent thermal and hydrothermal stability, and tunable host-guest interactions, as compared with other heterogeneous catalysts, metal-organic framework-based catalysts have good opportunities for application in the production of biodiesel at industrial scale.

scholarly journals Crystal growth of the core and rotated epitaxial shell of a heterometallic metal-organic framework revealed with atomic force microscopy

2021 ◽  
Author(s):  
Fajar Inggit Pambudi ◽  
Michael William Anderson ◽  
Martin Attfield
Keyword(s):  
Atomic Force Microscopy ◽  
Crystal Growth ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Force Microscopy ◽  
The Core ◽  
Atomic Force ◽  
Metal Organic ◽  
Surface Crystal ◽  
Organic Framework

Atomic force microscopy has been used to determine the surface crystal growth of two isostructural metal-organic frameworks, [Zn2(ndc)2(dabco)] (ndc = 1,4-naphthalene dicarboxylate, dabco = 4-diazabicyclo[2.2.2]octane) (1) and [Cu2(ndc)2(dabco)] (2) from...

Phytic acid functionalized magnetic bimetallic metal–organic frameworks for phosphopeptide enrichment

2021 ◽  
Vol 9 (7) ◽  
pp. 1811-1820
Author(s):  
Shuang Yan ◽  
Bin Luo ◽  
Jia He ◽  
Fang Lan ◽  
Yao Wu
Keyword(s):  
Phytic Acid ◽  
Efficient Method ◽  
High Selectivity ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
High Sensitivity ◽  
Phosphopeptide Enrichment ◽  
Metal Organic ◽  
Organic Framework

Novel bimetallic metal–organic framework nanocomposites were fabricated by a facile yet efficient method. The as-prepared nanomaterial exhibited high sensitivity and high selectivity toward phosphopeptides and good reusability of five cycles for enriching phosphopeptides.

scholarly journals Isomerization of glucose to fructose catalyzed by metal-organic framework

2021 ◽  
Author(s):  
Marta Lara-Serrano ◽  
Silvia Morales-delaRosa ◽  
Jose M. Campos-Martin ◽  
Víctor Karim Abdelkader-Fernández ◽  
Luis Cunha-Silva ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Isomerization Reaction ◽  
Metal Organic ◽  
Organic Framework

The isomerization reaction of glucose to fructose was studied using five selected metal-organic frameworks (MOFs) as catalysts and a mixture of γ-valerolactone and 10% H2O as the solvent. MOFs with...

Metal-Organic Framework Transistors for Dopamine Sensing

2021 ◽  
Author(s):  
Jiajun Song ◽  
Jianzhong Zheng ◽  
Anneng Yang ◽  
Hong Liu ◽  
Zeyu Zhao ◽  
...  
Keyword(s):  
Charge Transport ◽  
Transport Properties ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
High Porosity ◽  
Two Dimensional ◽  
Metal Organic ◽  
Organic Framework

Two-dimensional (2D) conductive metal-organic frameworks (MOFs) can not only inherit the high porosity and tailorability of traditional MOFs but also exhibit unique charge transport properties, offering promising opportunities for applications...

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