scholarly journals An acetate bound cobalt oxide catalyst for water oxidation: role of monovalent anions and cations in lowering overpotential

2014 ◽  
Vol 16 (24) ◽  
pp. 12221 ◽  
Author(s):  
Subal Dey ◽  
Biswajit Mondal ◽  
Abhishek Dey
Keyword(s):  
Cobalt Oxide ◽  
Water Oxidation ◽  
Oxide Catalyst ◽  
Anions And Cations

Electrochemical and photoelectrochemical water splitting with a CoOx catalyst prepared by flame assisted deposition

2020 ◽  
Vol 49 (3) ◽  
pp. 588-592 ◽  
Author(s):  
Fusheng Li ◽  
Ziqi Zhao ◽  
Hao Yang ◽  
Dinghua Zhou ◽  
Yilong Zhao ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Water Splitting ◽  
Water Oxidation ◽  
Oxide Catalyst ◽  
Photoelectrochemical Water Splitting ◽  
Deposition Method ◽  
Photoelectrochemical Water Oxidation

A cobalt oxide catalyst prepared by a flame-assisted deposition method on the surface of FTO and hematite for electrochemical and photoelectrochemical water oxidation, respectively.

Water oxidation by amorphous cobalt-based oxides: in situ tracking of redox transitions and mode of catalysis

2015 ◽  
Vol 8 (2) ◽  
pp. 661-674 ◽  
Author(s):  
Marcel Risch ◽  
Franziska Ringleb ◽  
Mike Kohlhoff ◽  
Peter Bogdanoff ◽  
Petko Chernev ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Water Oxidation ◽  
Structural Changes ◽  
Oxide Catalyst ◽  
Biological Catalysis ◽  
Redox Transitions

Water oxidation by an amorphous cobalt-oxide catalyst includes redox transitions accompanied by structural changes akin to molecular and biological catalysis.

scholarly journals Structural and functional role of anions in electrochemical water oxidation probed by arsenate incorporation into cobalt-oxide materials

2019 ◽  
Vol 21 (23) ◽  
pp. 12485-12493 ◽  
Author(s):  
Javier Villalobos ◽  
Diego González-Flores ◽  
Katharina Klingan ◽  
Petko Chernev ◽  
Paul Kubella ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Water Oxidation ◽  
Functional Role ◽  
Oxide Catalysts ◽  
Oxide Materials ◽  
Cobalt Ions

Arsenate ions are incorporated in amorphous cobalt oxide catalysts at the periphery of the lattice or substituting cobalt ions.

The role of oxygen vacancies in water oxidation for perovskite cobalt oxide electrocatalysts: are more better?

2019 ◽  
Vol 55 (10) ◽  
pp. 1442-1445 ◽  
Author(s):  
Xianbing Miao ◽  
Liang Wu ◽  
Yue Lin ◽  
Xueyou Yuan ◽  
Jiyin Zhao ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Water Oxidation ◽  
Oxygen Vacancies ◽  
High Oxygen ◽  
Vacancy Ordering ◽  
Oxygen Evolving

We demonstrate that high oxygen vacancies significantly weaken the oxygen-evolving activity for PrBaCo2O6−δ due to the formation of vacancy ordering.

Role of the Structure and Electronic Properties of Fe2O3-MoO3 Catalyst on the Dehydration of Isopropyl Alcohol

1993 ◽  
Vol 58 (7) ◽  
pp. 1591-1599 ◽  
Author(s):  
Abd El-Aziz A. Said
Keyword(s):  
Active Sites ◽  
Isopropyl Alcohol ◽  
Oxide Catalyst ◽  
Flow System ◽  
Charge Carriers ◽  
X Ray Diffraction ◽  
X Ray ◽  
Catalyst Composition ◽  
Surface Active

Molybdenum oxide catalyst doped or mixed with (1 - 50) mole % Fe3+ ions were prepared. The structure of the original samples and the samples calcined at 400 °C were characterized using DTA, X-ray diffraction and IR spectra. Measurements of the electrical conductivity of calcined samples with and without isopropyl alcohol revealed that the conductance increases on increasing the content of Fe3+ ions up to 50 mole %. The activation energies of charge carriers were determined in presence and absence of the alcohol. The catalytic dehydration of isopropyl alcohol was carried out at 250 °C using a flow system. The results obtained showed that the doped or mixed catalysts are active and selective towards propene formation. However, the catalyst containing 40 mole % Fe3+ ions exhibited the highest activity and selectivity. Correlations were attempted to the catalyst composition with their electronic and catalytic properties. Probable mechanism for the dehydration process is proposed in terms of surface active sites.

Stable acidic water oxidation with a cobalt‐iron‐lead oxide catalyst operating via a cobalt‐selective self‐healing mechanism

2021 ◽  
Author(s):  
Darcy Simondson ◽  
Manjunath Chatti ◽  
Shannon A. Bonke ◽  
Marc F. Tesch ◽  
Ronny Golnak ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Lead Oxide ◽  
Oxide Catalyst ◽  
Self Healing ◽  
Acidic Water ◽  
Cobalt Iron

scholarly journals WO3/BiVO4: impact of charge separation at the timescale of water oxidation

2019 ◽  
Vol 10 (9) ◽  
pp. 2643-2652 ◽  
Author(s):  
Shababa Selim ◽  
Laia Francàs ◽  
Miguel García-Tecedor ◽  
Sacha Corby ◽  
Chris Blackman ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Water Oxidation ◽  
Charge Separation ◽  
Carrier Dynamics ◽  
Applied Bias ◽  
Charge Carrier Dynamics

Unveiling the role of applied bias on the charge carrier dynamics in the WO3/BiVO4 junction during water oxidation.

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