Fe-Co-Ni trimetallic organic framework chrysanthemum-like nanoflowers: efficient and durable oxygen evolution electrocatalysts

2022 ◽  
Author(s):  
Ziliang Li ◽  
Shangkun Deng ◽  
Zhuangzhuang Yin ◽  
Shihan Qi ◽  
Hai Yu ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Nickel Foam ◽  
Metal Organic Frameworks ◽  
Metal Species ◽  
Metal Organic ◽  
Organic Framework

By mixing Fe, Co, and Ni metal species (FCN) in equimolar ratios, multivariate metal-organic frameworks (MOFs) with unique chrysanthemum nanoflower structures were successfully fabricated on a nickel foam (NF) via...

Performance enhancement of oxygen evolution reaction through incorporating bimetallic electrocatalysts in two-dimensional metal–organic frameworks

2020 ◽  
Vol 10 (12) ◽  
pp. 3897-3903 ◽  
Author(s):  
Chun Yang ◽  
Wen-Jing Cai ◽  
Bin-Bin Yu ◽  
Hong Qiu ◽  
Meng-Li Li ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Performance Enhancement ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Two Dimensional ◽  
Metal Organic ◽  
Excellent Stability ◽  
Electrochemical Catalysts ◽  
Organic Framework

We designed and synthesized a series of bimetallic and monometallic 2D metal–organic framework electrocatalysts with excellent stability, discussing their different electrochemical catalysts for oxygen evolution reaction (OER).

Trimetallic conductive metal–organic frameworks as precatalysts for the oxygen evolution reaction with enhanced activity

2020 ◽  
Vol 4 (9) ◽  
pp. 4589-4597
Author(s):  
Xiaofei Shi ◽  
Rui Hua ◽  
Yulong Xu ◽  
Tong Liu ◽  
Guang Lu
Keyword(s):  
Cation Exchange ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Solvothermal Synthesis ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Enhanced Activity ◽  
Metal Organic ◽  
Organic Framework

A strategy based on solvothermal synthesis and cation-exchange was developed to prepare the trimetallic FeCo0.6Ni0.4-CAT metal–organic framework (MOF) as the precatalyst for oxygen evolution reaction.

Morphology regulation of metal–organic framework-derived nanostructures for efficient oxygen evolution electrocatalysis

2020 ◽  
Vol 8 (35) ◽  
pp. 18215-18219 ◽  
Author(s):  
Yuwen Li ◽  
Mengting Lu ◽  
Yuhang Wu ◽  
Qinghong Ji ◽  
Hui Xu ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Catalytic Properties ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Metal Organic ◽  
Organic Framework

A series of morphology-regulated oxygen-evolution electrocatalysts including nanosheets, nanoflowers, nanotubes and aggregations derived from Hofmann-type metal–organic frameworks have been developed and demonstrated efficient catalytic properties.

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.

Unconventionally fabricating defect-rich NiO nanoparticles within ultrathin metal–organic framework nanosheets to enable high-output oxygen evolution

2020 ◽  
Vol 8 (4) ◽  
pp. 2140-2146 ◽  
Author(s):  
Qi Hu ◽  
Xiaowan Huang ◽  
Ziyu Wang ◽  
Guomin Li ◽  
Zhen Han ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Nio Nanoparticles ◽  
Highly Efficient ◽  
Metal Organic ◽  
High Output ◽  
Organic Framework

A controllable calcination route was developed for the crafting ultrafine NiO nanoparticles within ultrathin Ni-based metal–organic frameworks (Ni-MOFs), which are highly efficient for oxygen evolution reaction.

High Efficiency FeNi‐Metal‐Organic Framework Grown In‐situ on Nickel Foam for Electrocatalytic Oxygen Evolution

2019 ◽  
Vol 4 (19) ◽  
pp. 5988-5994 ◽  
Author(s):  
Qiang Wang ◽  
Fengyu Liu ◽  
Congcong Wei ◽  
Dandan Li ◽  
Wenjun Guo ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
High Efficiency ◽  
Nickel Foam ◽  
Metal Organic Framework ◽  
Metal Organic ◽  
Organic Framework

Retracted Article: Chemical etching of a cobalt-based metal-organic framework for enhancing the electrocatalytic oxygen evolution reaction

2017 ◽  
Author(s):  
Ai-Xin Zhu ◽  
Ai-Na Dou ◽  
Xiao-Dan Fang ◽  
Li-Bo Yang ◽  
Quan-Qing Xu
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Chemical Etching ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
High Density ◽  
Retracted Article ◽  
Metal Organic ◽  
Organic Framework

Via chemical etching, the pillar ligands of a 3D metal-organic frameworks (MOF) were removed, and a 2D layer MOF was obtained. This 2D MOF possesses high density of open metal...

Defective metal–organic framework derivative by room-temperature exfoliation and reduction for highly efficient oxygen evolution reaction

2019 ◽  
Vol 7 (23) ◽  
pp. 14011-14018 ◽  
Author(s):  
Zehua Zou ◽  
Minmin Cai ◽  
Xiaohua Zhao ◽  
Junfeng Huang ◽  
Jing Du ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Room Temperature ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Highly Efficient ◽  
Metal Organic ◽  
Organic Framework

Metal–organic frameworks (MOFs) have been considered attractive precursors to fabricate functional MOF derivatives for oxygen evolution reactions (OER).

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>

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