The pH dependence of OH radical formation in photo-electrochemical water oxidation with rutile TiO2 single crystals

2015 ◽  
Vol 17 (45) ◽  
pp. 30570-30576 ◽  
Author(s):  
Yukihiro Nakabayashi ◽  
Yoshio Nosaka
Keyword(s):  
Reaction Mechanism ◽  
Single Crystals ◽  
Alkaline Solution ◽  
Water Oxidation ◽  
Oxidation Process ◽  
Ph Dependence ◽  
Experimental Results ◽  
Radical Formation ◽  
Oh Radical ◽  
Rutile Tio2

The experimental results in photoelectrolysis with rutile (100) and (110) TiO2 single crystals support a plausible reaction mechanism that the surface Ti–O–O–Ti structure is an intermediate of water oxidation process, by which mechanism the O2 production becomes favorable in alkaline solution.

Rutile TiO2 single crystals delivering enhanced photocatalytic oxygen evolution performance

Nanoscale ◽  
2021 ◽  
Author(s):  
Bing Fu ◽  
Zhijiao Wu ◽  
Kai Guo ◽  
Lingyu Piao
Keyword(s):  
Catalytic Activity ◽  
Single Crystals ◽  
Oxygen Evolution ◽  
Water Oxidation ◽  
Charge Separation ◽  
High Surface ◽  
Rutile Tio2 ◽  
Highly Efficient ◽  
Photogenerated Charge Separation

Owing to their scientific and technological importance, the development of highly efficient photocatalytic water oxidation systems with rapid photogenerated charge separation and high surface catalytic activity has highly desirable for...

On the Impossibility of an OH-Radical Model for Photosynthetic Water Oxidation / Über die Unmöglichkeit eines OH-Radikalmodells für die photosynthetische Wasseroxidation

1972 ◽  
Vol 27 (2) ◽  
pp. 172-176 ◽  
Author(s):  
Gerhard Vierke
Keyword(s):  
Kinetic Model ◽  
Water Oxidation ◽  
Photosynthetic Apparatus ◽  
Experimental Results ◽  
Oh Radicals ◽  
Oh Radical ◽  
Inherent Property ◽  
Evolving System ◽  
Photosynthetic Water Oxidation ◽  
Radical Model

If it is assumed that the oscillating O2 flash yield sequence of algae and chloroplasts predominantly reflects an inherent property of the O2 evolving system of the photosynthetic apparatus it is shown that the OH-radical model (O2 production by recombination of four OH radicals) is contradictory to the experimental results because it predicts an aperiodic O2 flash yield sequence.Several experimental facts already known strongly indicate that the OH-radical model is not consistent with the kinetic model for O2 evolution of KOK et al. either.

Wavelength-Dependent Water Oxidation on Rutile TiO2(110)

2021 ◽  
Vol 12 (3) ◽  
pp. 1066-1072
Author(s):  
Chenbiao Xu ◽  
Fei Xu ◽  
Xiao Chen ◽  
Zhenxing Li ◽  
Zhiwen Luan ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Rutile Tio2

scholarly journals Conversion of Methanol on Rutile TiO2 (110) and Tungsten Oxide Clusters: 1. Population of Defect-Dependent Thermal Reaction Pathways

2021 ◽  
Author(s):  
Lars Mohrhusen ◽  
Katharina Al-Shamery
Keyword(s):  
Tungsten Oxide ◽  
Single Crystals ◽  
Model System ◽  
Thermal Reaction ◽  
Reaction Pathways ◽  
Bifunctional Catalysts ◽  
Rutile Tio2 ◽  
Reaction Routes ◽  
And Tungsten

Tungsten oxide clusters deposited on rutile TiO2 (110) single crystals were used as a model system for heterogenous oxide-oxide bifunctional catalysts. The population of different thermal reaction routes in methanol...

The pH dependence of impurity uptake by KDP single crystals

1973 ◽  
Vol 16 (2) ◽  
pp. 256-258
Author(s):  
L. A. Cherednik ◽  
V. N. Portnov ◽  
A. V. Belyustin
Keyword(s):  
Single Crystals ◽  
Ph Dependence

Influences of Duty Ratio on Structure and Corrosion Resistance of Ceramic Coatings on Ti-6Al-4V by Micro-Plasma Oxidation

2007 ◽  
Vol 336-338 ◽  
pp. 2454-2457
Author(s):  
Hong Qi Ben ◽  
Zhong Ping Yao ◽  
Zhao Hua Jiang
Keyword(s):  
Corrosion Resistance ◽  
Outer Layer ◽  
Oxidation Process ◽  
Ceramic Coatings ◽  
Duty Ratio ◽  
Plasma Oxidation ◽  
Rutile Tio2 ◽  
Key Factor ◽  
Α Al2o3 ◽  
Better Than

Duty ratio is a key factor during micro-plasma oxidation process. Its influences on structure and corrosion resistance of ceramic coatings on Ti–6Al–4V by pulsed bi-polar MPO in NaAlO2 solution were investigated. The ceramic coatings were composed of Al2TiO5, α-Al2O3 and rutile TiO2, of which Al2TiO5 was the main crystalline. The coating can be divided into a porous outer layer and a dense inner layer. Compared with the condition of the same duty ratio for both pulses, the rise of anode duty ratio (D1) led to an increase in the amount of Al2TiO5 and α-Al2O3 and increased the thickness of the coating; whereas the rise of cathode duty ratio (D2) led to a decrease in the amount of α-Al2O3 and decreased the thickness of the coating. Besides, the corrosion resistance of the coated samples was better than that of Ti-6Al-4V substrate. When D1 / D2 = 60 / 30, the produced coating’s corrosion resistance was best.

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