Electrospun cobalt-ZIF micro-fibers for efficient water oxidation under unique pH conditions

2019 ◽  
Vol 9 (8) ◽  
pp. 1847-1856 ◽  
Author(s):  
S. Sam Sankar ◽  
Sivasankara Rao Ede ◽  
S. Anantharaj ◽  
K. Karthick ◽  
K. Sangeetha ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Alkaline Electrolytes ◽  
Ph Conditions

A unique electrospinning methodology to fabricate Co based ZIF microfibers has been developed which showed superior electrocatalytic water oxidation both in acidic and alkaline electrolytes.

Enhanced stability of silicon for photoelectrochemical water oxidation through self-healing enabled by an alkaline protective electrolyte

2020 ◽  
Vol 13 (11) ◽  
pp. 4132-4141
Author(s):  
Harold J. Fu ◽  
Ivan A. Moreno-Hernandez ◽  
Pakpoom Buabthong ◽  
Kimberly M. Papadantonakis ◽  
Bruce S. Brunschwig ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Open Circuit ◽  
Self Healing ◽  
Alkaline Electrolytes ◽  
Photoelectrochemical Water Oxidation ◽  
Enhanced Stability

The addition of [Fe(CN)6]3− to alkaline electrolytes impede the corrosion of Si photoanodes at open circuit due to the formation of a SiOx layer.

Water Exchange Reactivity and Stability of Cobalt Polyoxometalates under Catalytically Relevant pH Conditions: Insight into Water Oxidation Catalysis

2011 ◽  
Vol 50 (18) ◽  
pp. 9053-9058 ◽  
Author(s):  
Dominik Lieb ◽  
Achim Zahl ◽  
Elizabeth F. Wilson ◽  
Carsten Streb ◽  
Leanne C. Nye ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Water Exchange ◽  
Oxidation Catalysis ◽  
Water Oxidation Catalysis ◽  
Ph Conditions ◽  
Insight Into

In situ grown Co3O4/Co(OH)2 hybrids as efficient electrocatalysts for water oxidation

2018 ◽  
Vol 42 (6) ◽  
pp. 4215-4222 ◽  
Author(s):  
Xiaoqiang Du ◽  
Hailong Pan ◽  
Zhi Yang
Keyword(s):  
Water Oxidation ◽  
Hydrothermal Reaction ◽  
Oxidation Catalysts ◽  
One Pot ◽  
Highly Efficient ◽  
Alkaline Electrolytes

A novel heterogeneous Co3O4/Co(OH)2 hybrid is prepared using a controllable facile one-pot hydrothermal reaction. The as-obtained hierarchical Co3O4/Co(OH)2 hybrids can serve as highly efficient electrocatalytic water oxidation catalysts for alkaline electrolytes.

Electroactivation-induced IrNi nanoparticles under different pH conditions for neutral water oxidation

Nanoscale ◽  
2020 ◽  
Vol 12 (27) ◽  
pp. 14903-14910
Author(s):  
Woong Hee Lee ◽  
Jaekyung Yi ◽  
Hong Nhan Nong ◽  
Peter Strasser ◽  
Keun Hwa Chae ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
Catalytic Properties ◽  
Electrochemical Activation ◽  
Environment Changes ◽  
Ph Conditions ◽  
Neutral Water

Electrochemical activation with a different pH environment changes the morphology and intrinsic catalytic properties of carbon-supported IrNi nanoparticles for oxygen evolution reaction (OER).

scholarly journals Water Oxidation Catalysts from Waste Metal Resources: A Facile Metal-Organic Electrochemical Approach

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Michael Lublow ◽  
Thomas Schedel-Niedrig
Keyword(s):  
Oxygen Evolution ◽  
Water Oxidation ◽  
Reaction Pathway ◽  
Oxidation Catalysts ◽  
Metal Oxide Thin Films ◽  
Electrochemical Approach ◽  
Alkaline Electrolytes ◽  
Iron Nickel ◽  
Metal Organic ◽  
Nickel Oxyhydroxide

Abstract A fabrication route is presented by a novel metal-organic electrochemical approach, allowing facile preparation of electrocatalytic metal and metal oxide thin films from solid metals at room temperature: divalent transition metals such as iron, nickel and cobalt can be deposited as amorphous oxyhydroxide films. Among them, nickel- and cobalt-prepared samples are showing high activity as water oxidation catalysts in alkaline electrolytes. The applicability to waste metal material is exemplified using one of the most abundant waste metal alloys, i.e. steel: with a suitable multi-layer architecture, comprising, a large surface-area iron oxyhydroxide core-geometry and a steel-derived catalytic overlayer, the overpotential for oxygen evolution (at 10 mA cm−2) could be improved to only 370 mV. Chemical analysis is provided to elucidate the reaction pathway, encompassing metal halogenation, formation of meta-stable metal-organic intermediates or direct electrochemical reduction, respectively. Structural peculiarities of the derived films are finally demonstrated upon development of a photoactive nickel oxyhydroxide/silicon junction realizing a photocurrent of 1 mA cm−2 at the thermodynamic potential for oxygen evolution and short-term stabilization in the range of several hours.

ChemInform Abstract: Water Exchange Reactivity and Stability of Cobalt Polyoxometalates under Catalytically Relevant pH Conditions: Insight into Water Oxidation Catalysis.

ChemInform ◽  
2011 ◽  
Vol 42 (48) ◽  
pp. no-no
Author(s):  
Dominik Lieb ◽  
Achim Zahl ◽  
Elizabeth F. Wilson ◽  
Carsten Streb ◽  
Leanne C. Nye ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Water Exchange ◽  
Oxidation Catalysis ◽  
Water Oxidation Catalysis ◽  
Ph Conditions ◽  
Insight Into

GaAs Microisland Anodes Protected by Amorphous TiO2 Films Mitigate Corrosion Spreading During Water Oxidation in Alkaline Electrolytes

2021 ◽  
pp. 3709-3714
Author(s):  
Pakpoom Buabthong ◽  
Jake M. Evans ◽  
Katherine Z. Rinaldi ◽  
Kathleen M. Kennedy ◽  
Harold J. Fu ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Tio2 Films ◽  
Alkaline Electrolytes ◽  
Amorphous Tio2

A robust iron oxyhydroxide water oxidation catalyst operating under near neutral and alkaline conditions

2016 ◽  
Vol 4 (10) ◽  
pp. 3655-3660 ◽  
Author(s):  
Debarati Roy Chowdhury ◽  
Leone Spiccia ◽  
S. S. Amritphale ◽  
Amit Paul ◽  
Archana Singh
Keyword(s):  
Thin Films ◽  
Water Oxidation ◽  
Metal Ion ◽  
Oxidation Catalyst ◽  
Iron Oxyhydroxide ◽  
Alkaline Ph ◽  
Inorganic Complexes ◽  
Electrochemically Deposited ◽  
Alkaline Conditions ◽  
Ph Conditions

Iron oxyhydroxide thin films electrochemically deposited from a non-aqueous medium using metal inorganic complexes as a metal ion precursor have been demonstrated as an efficient electrochemical water oxidation catalyst under near neutral as well as alkaline pH conditions.

Sign in / Sign up

Export Citation Format

Share Document