Metal–organic layer derived metal hydroxide nanosheets for highly efficient oxygen evolution

2019 ◽  
Vol 55 (38) ◽  
pp. 5467-5470 ◽  
Author(s):  
Wen-Da Zhang ◽  
Xiaodong Yan ◽  
Tao Li ◽  
Yong Liu ◽  
Qiu-Ting Fu ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Metal Hydroxide ◽  
Organic Layer ◽  
Organic Layers ◽  
Highly Efficient ◽  
Metal Organic ◽  
Better Than

Ultrathin metal hydroxide nanosheets derived from metal–organic layers serving as electrocatalysts displayed highly efficient oxygen evolution even better than commercial IrO2.

scholarly journals MXene Boosted CoNi-ZIF-67 as Highly Efficient Electrocatalysts for Oxygen Evolution

Nanomaterials ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 775 ◽  
Author(s):  
Yangyang Wen ◽  
Zhiting Wei ◽  
Chang Ma ◽  
Xiaofei Xing ◽  
Zhenxing Li ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
High Specific Surface Area ◽  
Metal Catalyst ◽  
Hydrogen Electrode ◽  
Metal Centers ◽  
Onset Potential ◽  
Highly Efficient ◽  
Energy Technologies ◽  
Metal Organic ◽  
High Overpotentials

Oxygen evolution reaction (OER) is a pivotal step for many sustainable energy technologies, and exploring inexpensive and highly efficient electrocatalysts is one of the most crucial but challenging issues to overcome the sluggish kinetics and high overpotentials during OER. Among the numerous electrocatalysts, metal-organic frameworks (MOFs) have emerged as promising due to their high specific surface area, tunable porosity, and diversity of metal centers and functional groups. It is believed that combining MOFs with conductive nanostructures could significantly improve their catalytic activities. In this study, an MXene supported CoNi-ZIF-67 hybrid (CoNi-ZIF-67@Ti3C2Tx) was synthesized through the in-situ growth of bimetallic CoNi-ZIF-67 rhombic dodecahedrons on the Ti3C2Tx matrix via a coprecipitation reaction. It is revealed that the inclusion of the MXene matrix not only produces smaller CoNi-ZIF-67 particles, but also increases the average oxidation of Co/Ni elements, endowing the CoNi-ZIF-67@Ti3C2Tx as an excellent OER electrocatalyst. The effective synergy of the electrochemically active CoNi-ZIF-67 phase and highly conductive MXene support prompts the hybrid to process a superior OER catalytic activity with a low onset potential (275 mV vs. a reversible hydrogen electrode, RHE) and Tafel slope (65.1 mV∙dec−1), much better than the IrO2 catalysts and the pure CoNi-ZIF-67. This work may pave a new way for developing efficient non-precious metal catalyst materials.

Ultrathin trimetallic metal–organic framework nanosheets for highly efficient oxygen evolution reaction

2019 ◽  
Vol 7 (23) ◽  
pp. 14163-14168 ◽  
Author(s):  
Mengmeng Ding ◽  
Jing Chen ◽  
Meiwen Jiang ◽  
Xiaojun Zhang ◽  
Guangfeng Wang
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Metal Organic Framework ◽  
Organic Ligand ◽  
Ion Transfer ◽  
Highly Efficient ◽  
Metal Organic ◽  
Active Centres ◽  
Organic Framework

Ultrathin trimetallic metal–organic framework nanosheets using 2-methylimidazole as an organic ligand are greatly improving the performance of oxygen evolution reaction due to their more active centres and better ion transfer passage.

Ultrafine bimetallic phosphide nanoparticles embedded in carbon nanosheets: two-dimensional metal–organic framework-derived non-noble electrocatalysts for the highly efficient oxygen evolution reaction

Nanoscale ◽  
2018 ◽  
Vol 10 (42) ◽  
pp. 19774-19780 ◽  
Author(s):  
Min Jiang ◽  
Jun Li ◽  
Xiaofan Cai ◽  
Yu Zhao ◽  
Lijia Pan ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Metal Organic Framework ◽  
Alkaline Media ◽  
Two Dimensional ◽  
Carbon Nanosheets ◽  
Highly Efficient ◽  
Metal Organic ◽  
Organic Framework

The Co1−xFexP/C nanosheets are synthesized using a 2D MOF as the precursor for highly efficient OER catalysis in alkaline media.

One-dimensional MoO2–Co2Mo3O8@C nanorods: a novel and highly efficient oxygen evolution reaction catalyst derived from metal–organic framework composites

2018 ◽  
Vol 54 (22) ◽  
pp. 2739-2742 ◽  
Author(s):  
Yanqiang Li ◽  
Haibin Xu ◽  
Huiyong Huang ◽  
Chao Wang ◽  
Liguo Gao ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Metal Organic Framework ◽  
One Dimensional ◽  
Highly Efficient ◽  
Metal Organic ◽  
Organic Framework

One dimensional MoO2–Co2Mo3O8@C nanorods were synthesized by using MoO3@ZIF-67 composites as a precursor and the catalyst Co2Mo3O8 shows excellent OER activity.

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