Bimetallic Nickel-Substituted Cobalt-Borate Nanowire Array: An Earth-Abundant Water Oxidation Electrocatalyst with Superior Activity and Durability at Near Neutral pH

Small ◽  
2017 ◽  
Vol 13 (25) ◽  
pp. 1700394 ◽  
Author(s):  
Min Ma ◽  
Fengli Qu ◽  
Xuqiang Ji ◽  
Danni Liu ◽  
Shuai Hao ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Nanowire Array ◽  
Neutral Ph ◽  
Earth Abundant

scholarly journals Homogeneous photochemical water oxidation with metal salophen complexes in neutral media

2019 ◽  
Vol 18 (11) ◽  
pp. 2782-2791 ◽  
Author(s):  
Md. Ali Asraf ◽  
Chizoba I. Ezugwu ◽  
C. M. Zakaria ◽  
Francis Verpoort
Keyword(s):  
Water Oxidation ◽  
Oxidation Catalysts ◽  
Neutral Ph ◽  
Earth Abundant ◽  
Neutral Media

The development of water oxidation catalysts based on Earth-abundant metals that can function at neutral pH remains a basic chemical challenge.

A NiCo2O4@Ni–Co–Ci core–shell nanowire array as an efficient electrocatalyst for water oxidation at near-neutral pH

2017 ◽  
Vol 53 (55) ◽  
pp. 7812-7815 ◽  
Author(s):  
Ruixiang Ge ◽  
Min Ma ◽  
Xiang Ren ◽  
Fengli Qu ◽  
Zhiang Liu ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Nanowire Array ◽  
Core Shell ◽  
Neutral Ph

Core–shell structured NiCo2O4@Ni–Co–Ci/CC drives 10 mA cm−2 at 309 mV overpotential for water oxidation in 1.0 M K–Ci.

A Nickel(II) Complex as a Homogeneous Electrocatalyst for Water Oxidation at Neutral pH: Dual Role of HPO42−in Catalysis

ChemCatChem ◽  
2016 ◽  
Vol 8 (20) ◽  
pp. 3287-3293 ◽  
Author(s):  
Jia-Wei Wang ◽  
Xiang-Qiong Zhang ◽  
Hai-Hua Huang ◽  
Tong-Bu Lu
Keyword(s):  
Water Oxidation ◽  
Dual Role ◽  
Neutral Ph

scholarly journals Visible-Light-Driven Water Oxidation on Self-Assembled Metal-Free Organic@Carbon Junctions at Neutral pH

JACS Au ◽  
2021 ◽  
Author(s):  
Astrid J. Olaya ◽  
Julieta S. Riva ◽  
Dominika Baster ◽  
Wanderson O. Silva ◽  
François Pichard ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Visible Light ◽  
Water Oxidation ◽  
Metal Free ◽  
Neutral Ph ◽  
Visible Light Driven ◽  
Self Assembled

scholarly journals Aromaticity Driven Electrocatalytic Water Oxidation by a Phosphorus-Nitrogen PN3-Pincer Cobalt Complex

2019 ◽  
Author(s):  
Pradip K. Das ◽  
Sarmistha Bhunia ◽  
Priyanka Chakraborty ◽  
Atanu Rana ◽  
Abhishek Dey ◽  
...  
Keyword(s):  
Water Oxidation ◽  
High Efficiency ◽  
Cobalt Complex ◽  
Potential Jump ◽  
Onset Potential ◽  
New Strategy ◽  
Earth Abundant ◽  
High Valent ◽  
Lower Overpotential ◽  
Cobalt Species

Water oxidation is the primary step in both natural and artificial photosynthesis to convert solar energy in into chemical fuels. Herein, we report the first cobalt-based pincer catalyst for electrolytic water oxidation at neutral pH with high efficiency under electrochemical conditions. Most importantly, ligand (pseudo)aromaticity is identified to play an important role in the electrocatalysis. A significant potential jump (~300 mV) was achieved towards a lower positive value when the aromatized cobalt complex was transformed to a (pseudo)dearomatized cobalt species. This complex catalyzes the water oxidation in its high valent oxidation state at a much lower overpotential (~ 340 mV vs. NHE) based on the onset potential (0.5 mA/cm<sup>2</sup>) of catalysis at pH 10.5, outperforming all the other literature systems. These observations may provide a new strategy for the design of earth-abundant transition metal-based water oxidation catalysts.

A cobalt-borate nanosheet array: an efficient and durable non-noble-metal electrocatalyst for water oxidation at near neutral pH

2017 ◽  
Vol 5 (16) ◽  
pp. 7305-7308 ◽  
Author(s):  
Libin Yang ◽  
Danni Liu ◽  
Shuai Hao ◽  
Rongmei Kong ◽  
Abdullah M. Asiri ◽  
...  
Keyword(s):  
High Activity ◽  
Noble Metal ◽  
Current Density ◽  
Water Oxidation ◽  
Catalytic Current ◽  
Neutral Ph ◽  
Nanosheet Array ◽  
Ti Mesh ◽  
Catalyst Electrode

As a durable catalyst electrode, a cobalt-borate nanosheet array on a Ti mesh shows high activity for water oxidation in 0.1 M K-Bi (pH: 9.2), achieving a geometrical catalytic current density of 10 mA cm−2 at an overpotential of 469 mV.

Octanuclear Cu(II) cluster-tungstosilicate composite as efficient electrocatalyst for oxygen evolution reaction at near-neutral pH

2021 ◽  
Author(s):  
Junqi Lin ◽  
Xin Chen ◽  
Nini Wang ◽  
Shanshan Liu ◽  
Yanmei Chen ◽  
...  
Keyword(s):  
Transition Metal ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Metal Clusters ◽  
Catalytic Efficiency ◽  
Water Soluble ◽  
Transition Metal Clusters ◽  
Neutral Ph

Transition metal clusters have been used for water oxidation with high catalytic efficiency. However, they are water soluble and often used homogeneously rather than heterogeneously. Herein, a water soluble octanuclear...

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