Concentrated-acid triggered superfast generation of porous amorphous cobalt oxide toward efficient water oxidation catalysis in alkaline solution

2019 ◽  
Vol 55 (12) ◽  
pp. 1797-1800 ◽  
Author(s):  
Xuqiang Ji ◽  
Yujia He ◽  
Jingquan Liu
Keyword(s):  
Cobalt Oxide ◽  
Alkaline Solution ◽  
Water Oxidation ◽  
Oxidation Catalysis ◽  
Oxidation Catalyst ◽  
Carbon Cloth ◽  
Water Oxidation Catalysis

Amorphous cobalt oxide on carbon cloth (AMO-CoO/CC) was prepared as an excellent water-oxidation catalyst with 50 mV less overpotential at 10 mA cm−2 than highly-crystallized Co3O4 in 1.0 M KOH.

Efficient electrochemical water oxidation catalysis by nanostructured Mn2O3

RSC Advances ◽  
2015 ◽  
Vol 5 (31) ◽  
pp. 24200-24204 ◽  
Author(s):  
A. Singh ◽  
D. Roy Chowdhury ◽  
S. S. Amritphale ◽  
N. Chandra ◽  
I. B. Singh
Keyword(s):  
Surface Area ◽  
Water Oxidation ◽  
Oxidation Catalysis ◽  
Oxidation Catalyst ◽  
Water Oxidation Catalysis

Hydrothermally synthesized Mn2O3nanorods have been demonstrated as an efficient electrochemical water oxidation catalyst over MnO2despite the fact that later has a higher surface area.

Differentiating Homogeneous and Heterogeneous Water Oxidation Catalysis: Confirmation that [Co4(H2O)2(α-PW9O34)2]10– Is a Molecular Water Oxidation Catalyst

2013 ◽  
Vol 135 (38) ◽  
pp. 14110-14118 ◽  
Author(s):  
James W. Vickers ◽  
Hongjin Lv ◽  
Jordan M. Sumliner ◽  
Guibo Zhu ◽  
Zhen Luo ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Oxidation Catalysis ◽  
Oxidation Catalyst ◽  
Molecular Water ◽  
Water Oxidation Catalysis

scholarly journals A stable dye-sensitized photoelectrosynthesis cell mediated by a NiO overlayer for water oxidation

2019 ◽  
Vol 117 (23) ◽  
pp. 12564-12571 ◽  
Author(s):  
Degao Wang ◽  
Fujun Niu ◽  
Michael J. Mortelliti ◽  
Matthew V. Sheridan ◽  
Benjamin D. Sherman ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Photocurrent Density ◽  
Oxidation Catalysis ◽  
Oxidation Catalyst ◽  
Photoelectrochemical Cells ◽  
Half Cell ◽  
Dye Sensitized ◽  
Light Absorber ◽  
Water Oxidation Catalysis

In the development of photoelectrochemical cells for water splitting or CO2reduction, a major challenge is O2evolution at photoelectrodes that, in behavior, mimic photosystem II. At an appropriate semiconductor electrode, a water oxidation catalyst must be integrated with a visible light absorber in a stable half-cell configuration. Here, we describe an electrode consisting of a light absorber, an intermediate electron donor layer, and a water oxidation catalyst for sustained light driven water oxidation catalysis. In assembling the electrode on nanoparticle SnO2/TiO2electrodes, a Ru(II) polypyridyl complex was used as the light absorber, NiO was deposited as an overlayer, and a Ru(II) 2,2′-bipyridine-6,6′-dicarboxylate complex as the water oxidation catalyst. In the final electrode, addition of the NiO overlayer enhanced performance toward water oxidation with the final electrode operating with a 1.1 mA/cm2photocurrent density for 2 h without decomposition under one sun illumination in a pH 4.65 solution. We attribute the enhanced performance to the role of NiO as an electron transfer mediator between the light absorber and the catalyst.

A Co(ii)–Ru(ii) dyad relevant to light-driven water oxidation catalysis

2014 ◽  
Vol 16 (24) ◽  
pp. 12000-12007 ◽  
Author(s):  
Alejandro Montellano López ◽  
Mirco Natali ◽  
Erica Pizzolato ◽  
Claudio Chiorboli ◽  
Marcella Bonchio ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Potential Application ◽  
Artificial Photosynthesis ◽  
Oxidation Catalysis ◽  
Oxidation Catalyst ◽  
Water Oxidation Catalysis

The covalent anchoring of a Co(ii) water oxidation catalyst to a Ru(ii) photosensitizer with potential application in artificial photosynthesis.

High Spin State Promotes Water Oxidation Catalysis at Neutral pH in Spinel Cobalt Oxide

2018 ◽  
Vol 57 (5) ◽  
pp. 1441-1445 ◽  
Author(s):  
Lin Ma ◽  
Sung-Fu Hung ◽  
Liping Zhang ◽  
Weizheng Cai ◽  
Hong Bin Yang ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
High Spin ◽  
Spin State ◽  
Water Oxidation ◽  
High Spin State ◽  
Oxidation Catalysis ◽  
Neutral Ph ◽  
Water Oxidation Catalysis

scholarly journals Decoration of the layered manganese oxide birnessite with Mn(ii/iii) gives a new water oxidation catalyst with fifty-fold turnover number enhancement

2015 ◽  
Vol 44 (29) ◽  
pp. 12981-12984 ◽  
Author(s):  
Ian G. McKendry ◽  
Sandeep K. Kondaveeti ◽  
Samantha L. Shumlas ◽  
Daniel R. Strongin ◽  
Michael J. Zdilla
Keyword(s):  
Manganese Oxide ◽  
Oxidation State ◽  
Water Oxidation ◽  
Oxidation Catalysis ◽  
Oxidation Catalyst ◽  
Turnover Number ◽  
Average Oxidation State ◽  
Water Oxidation Catalysis ◽  
Layered Manganese Oxide

The role of the manganese average oxidation state (AOS) in water oxidation catalysis by birnessite was investigated.

Structural evolution of the Ru-bms complex to the real water oxidation catalyst of Ru-bda: the bite angle matters

2020 ◽  
Vol 49 (14) ◽  
pp. 4369-4375
Author(s):  
Jing Yang ◽  
Bin Liu ◽  
Lele Duan
Keyword(s):  
Water Oxidation ◽  
Structural Evolution ◽  
Oxidation Catalysis ◽  
Oxidation Catalyst ◽  
The Real ◽  
Bite Angle ◽  
Water Oxidation Catalysis ◽  
Ru Complexes ◽  
Opening Up

The bite angle matters: Opening up the O–Ru–O angle of Ru complexes enables water oxidation catalysis.

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