A nickel(ii) complex under water-oxidation reaction: what is the true catalyst?

2019 ◽  
Vol 48 (2) ◽  
pp. 547-557 ◽  
Author(s):  
Hadi Feizi ◽  
Robabeh Bagheri ◽  
Zvonko Jagličić ◽  
Jitendra Pal Singh ◽  
Keun Hwa Chae ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Oxidation Reaction ◽  
Ni Oxide

A Ni(ii) complex as a water-oxidizing catalyst under electrochemical conditions was studied and the role of Ni oxide as a true catalyst was investigated.

scholarly journals The Role of TiO2Doping on RuO2-Coated Electrodes for the Water Oxidation Reaction

2013 ◽  
Vol 117 (12) ◽  
pp. 6126-6135 ◽  
Author(s):  
Lars-Åke Näslund ◽  
Carlos M. Sánchez-Sánchez ◽  
Árni S. Ingason ◽  
Joakim Bäckström ◽  
Enrique Herrero ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Oxidation Reaction ◽  
Coated Electrodes

The application of a nickel(ii) Schiff base complex in water oxidation: the importance of nanosized materials

2018 ◽  
Vol 8 (15) ◽  
pp. 3954-3968 ◽  
Author(s):  
Hadi Feizi ◽  
Farshad Shiri ◽  
Robabeh Bagheri ◽  
Jitendra Pal Singh ◽  
Keun Hwa Chae ◽  
...  
Keyword(s):  
Schiff Base ◽  
Water Oxidation ◽  
Schiff Base Complex ◽  
Base Complex ◽  
Nanosized Materials ◽  
Ni Oxide

The role of Ni oxide in the electrocatalytic water oxidation of a nickel(ii) Schiff base (N,N′-bis (salicylidene) ethylenediamino nickel(ii)) is investigated.

Unravelling the role of polyoxovanadates in electrocatalytic water oxidation reaction: Active species or precursors

2021 ◽  
Vol 540 ◽  
pp. 148306
Author(s):  
Na Hu ◽  
Jing Du ◽  
Yuan-Yuan Ma ◽  
Wen-Jing Cui ◽  
Bo-Rong Yu ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Oxidation Reaction ◽  
Active Species

The role of Se vacancies and Fe doping of nickel selenide in the water oxidation reaction

2020 ◽  
Vol 4 (6) ◽  
pp. 3058-3065 ◽  
Author(s):  
Bishnupad Mohanty ◽  
Bikash Kumar Jena ◽  
Manikandan Kandasamy ◽  
Namita Dalai ◽  
Ranjan Kumar Sahu ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Oxidation Reaction ◽  
Fe Doping ◽  
Defect Engineering ◽  
Electroactive Material ◽  
Iron Doped

Defect engineering in flower-shaped iron-doped nickel selenide as an electroactive material for water oxidation reaction.

One-electron intermediates of water oxidation & the role of solvation in their stability

2017 ◽  
Vol 5 (23) ◽  
pp. 11410-11417 ◽  
Author(s):  
X. Chen ◽  
D. Aschaffenburg ◽  
T. Cuk
Keyword(s):  
Water Oxidation ◽  
Oxidation Reaction ◽  
Theoretical Calculations ◽  
Charge Trapping ◽  
Localize Charge ◽  
Explicit Solvent

The recent observations of one-electron intermediates of the water oxidation reaction, which localize charge to the surface, suggest that their stability is guided by solvation; in turn, this calls for an expansion of current theoretical calculations of their charge trapping capacity to include explicit solvent.

Impact Of Synthesis Route on the Water Oxidation Kinetics of Hematite Photoanodes

2020 ◽  
Author(s):  
Camilo A. Mesa ◽  
Ludmilla Steier ◽  
Benjamin Moss ◽  
Laia Francàs ◽  
James E. Thorne ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Reaction Kinetics ◽  
Water Oxidation ◽  
Oxidation Kinetics ◽  
Oxidation Reaction ◽  
Charge Accumulation ◽  
Optical Signals ◽  
Current Voltage ◽  
Voltage Performance ◽  
Kinetics Of

<p><i>Operando</i> spectroelectrochemical analysis is used to determine the water oxidation reaction kinetics for hematite photoanodes prepared using four different synthetic procedures. Whilst these photoanodes exhibit very different current / voltage performance, their underlying water oxidation kinetics are found to be almost invariant. Lower photoanode performance was found to correlate with the observation of optical signals indicative of charge accumulation in mid-gap oxygen vacancy states, indicating these states do not contribute directly to water oxidation.</p>

scholarly journals Dynamics of Oxidation of Reduced Forms of CO2 under Electrochemical and Open-Сircuit Conditions on Polycrystalline Pt in H2CO3

Metals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 274
Author(s):  
Alexander V. Smolin ◽  
Мikhail N. Mikhailov ◽  
Aleksey F. Gadzaov ◽  
Leonid M. Kustov
Keyword(s):  
Quantum Chemical ◽  
Preliminary Analysis ◽  
Oxidation Reaction ◽  
Density Functional ◽  
Oxidation Process ◽  
Open Circuit ◽  
Organic Substances ◽  
Oxidation Of Co ◽  
Reduced Forms

The problem of identifying correlations between catalytic and electrocatalytic processes is one of the fundamental problems of catalysis among “simple” organic substances, and the oxidation of CO and rCO2 is of great interest, since CO and CO2 are considered in pairs both during catalytic and electrocatalytic transformations. In the case of electrocatalysis, this analysis is important in the study of fuel cells. In this paper, we studied the correlation between the oxidation of reduced forms of CO2 (rCO2) under potentiodynamic-galvanoctatic electrochemical and open-circuit conditions of measurements on polycrystalline (pc)Pt in H2CO3. Periodic oscillations are revealed at the oxidation of Had and rCO2 on (pc)Pt. Quantum chemical calculations were carried out on the Pt13 cluster in order to identify the mechanisms of the rCO2 oxidation reaction. The correspondence in the energy parameters of the oxidation process of rCO2 under open-circuit conditions and electrochemical conditions is shown. The preliminary analysis of the system using density functional (DFT) calculations is carried out and the most stable systems that are based on Pt13 are found, namely rOH-Pt13-(CO)n, rOH-Pt13-(COH) and rOH-Pt13-(rCOOH). OH• species was chosen as the most likely candidate for the role of the oxidant for rCO2. Preliminary calculations for the expected reactions were carried out, and the optimal PES is revealed.

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