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>

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 Water oxidation kinetics of nanoporous BiVO4 photoanodes functionalised with nickel/iron oxyhydroxide electrocatalysts

2021 ◽  
Author(s):  
Laia Francàs ◽  
Shababa Selim ◽  
Sacha Corby ◽  
Dongho Lee ◽  
Camilo A. Mesa ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Water Oxidation ◽  
Oxidation Kinetics ◽  
Charge Accumulation ◽  
Iron Oxyhydroxide ◽  
Nickel Iron ◽  
Co Catalysts ◽  
Fe Oxyhydroxides ◽  
Kinetics Of

Elucidating the role of charge accumulation and reaction kinetics in governing the performance of Ni/Fe oxyhydroxides as electrocatalysts and as co-catalysts on BiVO4 photoanodes water oxidation.

scholarly journals A new method for studying activity and reaction kinetics of photocatalytic water oxidation systems using a bubbling reactor

2014 ◽  
Vol 238 ◽  
pp. 17-26 ◽  
Author(s):  
Simelys Hernández ◽  
Samir Bensaid ◽  
Marco Armandi ◽  
Adriano Sacco ◽  
Angelica Chiodoni ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Water Oxidation ◽  
New Method ◽  
Kinetics Of

scholarly journals An exceptionally stable octacobalt-cluster-based metal–organic framework for enhanced water oxidation catalysis

2019 ◽  
Vol 10 (42) ◽  
pp. 9859-9864 ◽  
Author(s):  
Ning-Yu Huang ◽  
Jian-Qiang Shen ◽  
Zi-Ming Ye ◽  
Wei-Xiong Zhang ◽  
Pei-Qin Liao ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Adsorption Energy ◽  
Water Oxidation ◽  
Metal Organic Framework ◽  
Oxidation Catalysis ◽  
Cobalt Ions ◽  
Water Oxidation Catalysis ◽  
Metal Organic ◽  
Kinetics Of ◽  
Organic Framework

The site, capping four coplanar cobalt ions, has a near-optimal OH− adsorption energy, which is beneficial to accelerate the reaction kinetics of water oxidation catalysis.

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

2020 ◽  
Vol 11 (17) ◽  
pp. 7285-7290 ◽  
Author(s):  
Camilo A. Mesa ◽  
Ludmilla Steier ◽  
Benjamin Moss ◽  
Laia Francàs ◽  
James E. Thorne ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Oxidation Kinetics ◽  
Synthesis Route ◽  
Kinetics Of

Thermal oxidation reaction process and oxidation kinetics of abietic acid

RSC Advances ◽  
2015 ◽  
Vol 5 (22) ◽  
pp. 17123-17130 ◽  
Author(s):  
Fan Ren ◽  
Yan-Fei Zheng ◽  
Xiong-Min Liu ◽  
Qiong-Qiong Yang ◽  
Qiang Zhang ◽  
...  
Keyword(s):  
Kinetic Study ◽  
Thermal Oxidation ◽  
Oxidation Kinetics ◽  
Oxidation Reaction ◽  
Abietic Acid ◽  
Reaction Process ◽  
Basic Data ◽  
Kinetics Of

A kinetic study on the oxidation of abietic acid, providing new basic data.

scholarly journals The oxidation kinetics of depleted uranium and its low-alloy molybdenum alloys in moist air

2019 ◽  
Vol 63 (3) ◽  
pp. 100-104
Author(s):  
T. Chmela ◽  
P. Krupička
Keyword(s):  
Relative Humidity ◽  
Reaction Kinetics ◽  
Oxidation Kinetics ◽  
Reaction Rate ◽  
Depleted Uranium ◽  
Rate Equations ◽  
Moist Air ◽  
Molybdenum Alloys ◽  
Exponential Behaviour ◽  
Kinetics Of

Abstract The oxidation kinetics of depleted uranium and its low-alloy molybdenum alloys (U-2wt.%Mo, U-5wt.%Mo) were measured in a moist air (75% relative humidity) at 60 and 75 ° C. Coefficients of reaction rate equations were determined for linear oxidation kinetics. In the oxidation of depleted uranium at 75 ° C, a change in reaction kinetics from linear to exponential behaviour was observed after about 2500 hours.

Highly dispersed SmMn2O5 nanorods for electrochemical water oxidation reaction kinetics

2019 ◽  
Vol 6 (9) ◽  
pp. 095090 ◽  
Author(s):  
B Jansi Rani ◽  
M Gowsalya ◽  
G Ravi ◽  
R Yuvakkumar ◽  
S I Hong
Keyword(s):  
Reaction Kinetics ◽  
Water Oxidation ◽  
Oxidation Reaction ◽  
Highly Dispersed
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