scholarly journals New insights into water photooxidation on reductively pretreated hematite photoanodes

2017 ◽  
Vol 19 (32) ◽  
pp. 21807-21817 ◽  
Author(s):  
Dejan Cibrev ◽  
Massimo Tallarida ◽  
Chittaranjan Das ◽  
Teresa Lana-Villarreal ◽  
Dieter Schmeisser ◽  
...  
Keyword(s):  
Water Photooxidation

Photoactivity enhancement of hematite nanorod electrodes upon a reductive pretreatment can be explained on the basis of morphological and electronic changes.

Molecular Mechanism of Water Oxidation Reaction at Photo-Irradiated TiO2 and Related Metal Oxide Surfaces

2010 ◽  
Vol 162 ◽  
pp. 1-27 ◽  
Author(s):  
Ryuhei Nakamura ◽  
Yoshihiro Nakato
Keyword(s):  
Visible Light ◽  
Metal Oxides ◽  
Molecular Mechanism ◽  
Water Oxidation ◽  
Nucleophilic Attack ◽  
Electron Transfer Mechanism ◽  
Metal Oxide Surfaces ◽  
Responsive Materials ◽  
Solar Water Splitting ◽  
Water Photooxidation

Recent studies on the molecular mechanism of water photooxidation (or oxygen photoevolution) reaction on TiO2 and related metal oxides or oxynitrides are reviewed. It is shown that a lot of experimental and theoretical studies give definite support to our recently proposed new mechanism, called “nucleophilic attack of H2O” or “Lewis acid-base” mechanism. The new mechanism has the prominent features that it possesses energetic and kinetics different from the conventional electron-transfer mechanism and can explain water photooxidation reaction on visible-light responsive metal oxides or oxynitrides, contrary to the conventional one. The result indicates that the new mechanism is useful for searching for new efficient visible-light responsive materials for solar water splitting.

Photoelectrochemical properties of electrospun titania nanofibers - comparison with nanoparticles

2009 ◽  
Vol 1211 ◽  
Author(s):  
Jan Macak ◽  
Jaromir Pytel ◽  
Jesus Rodriguez Ruiz ◽  
Radim Beranek
Keyword(s):  
Aqueous Electrolyte ◽  
Striking Difference ◽  
Photoelectrochemical Properties ◽  
Nanocrystalline Particles ◽  
Hole Scavenger ◽  
Water Photooxidation ◽  
Titania Nanofibers

AbstractPhotoelectrochemical properties of photoelectrodes consisting of pressed layers of electrospun TiO2 nanofibers were investigated by wavelength-resolved photocurrent measurements in LiClO4 (0.1 M) aqueous electrolyte with or without addition of KI as an additional hole scavenger. The photocurrents on nanofiber electrodes were three-times lower as compared to electrodes based on Hombikat nanocrystalline particles. The calcination of electrodes was necessary to observe enhanced efficiencies in the presence of iodide. The most striking difference between nanofiber and particulate electrodes was found in the effect of calcination on the efficiency of water photooxidation.

Water Photooxidation by Smooth and Ultrathin α-Fe2O3Nanotube Arrays

2009 ◽  
Vol 21 (14) ◽  
pp. 3048-3055 ◽  
Author(s):  
Susanta K. Mohapatra ◽  
Shiny E. John ◽  
Subarna Banerjee ◽  
Mano Misra
Keyword(s):  
Water Photooxidation

scholarly journals A comprehensive understanding of water photooxidation on Ag3PO4 surfaces

RSC Advances ◽  
2017 ◽  
Vol 7 (39) ◽  
pp. 23994-24003 ◽  
Author(s):  
Zuju Ma ◽  
Sen Lin ◽  
Rongjian Sa ◽  
Qiaohong Li ◽  
Kechen Wu
Keyword(s):  
Dft Calculations ◽  
Systematic Study ◽  
First Principles ◽  
Comprehensive Understanding ◽  
Water Photooxidation

A systematic study of the mechanism of OER on Ag3PO4 surfaces by combining hybrid DFT calculations and first principles thermodynamics.

scholarly journals Nanoporous carbon/WO3 anodes for an enhanced water photooxidation

Carbon ◽  
2016 ◽  
Vol 108 ◽  
pp. 471-479 ◽  
Author(s):  
Alicia Gomis-Berenguer ◽  
Verónica Celorrio ◽  
Jesus Iniesta ◽  
David J. Fermin ◽  
Conchi O. Ania
Keyword(s):  
Nanoporous Carbon ◽  
Water Photooxidation

Hematite Thin Film Photoanodes for Visible Light Water Photooxidation: Effects of Zn Doping and Hydrogen Treatment

2017 ◽  
Vol 17 (12) ◽  
pp. 8959-8966 ◽  
Author(s):  
Aadesh P Singh ◽  
Nishant Saini ◽  
Bodh R Mehta ◽  
Giorgio Carraro ◽  
Davide Barreca
Keyword(s):  
Thin Film ◽  
Visible Light ◽  
Hydrogen Treatment ◽  
Zn Doping ◽  
Light Water ◽  
Water Photooxidation

Water Photooxidation by TiSi2–TiO2 Nanotubes

2011 ◽  
Vol 115 (25) ◽  
pp. 12643-12649 ◽  
Author(s):  
Subarna Banerjee ◽  
Susanta K. Mohapatra ◽  
Mano Misra
Keyword(s):  
Tio2 Nanotubes ◽  
Water Photooxidation

Activation Energies for the Rate-Limiting Step in Water Photooxidation by Nanostructured α-Fe2O3and TiO2

2011 ◽  
Vol 133 (26) ◽  
pp. 10134-10140 ◽  
Author(s):  
Alexander J. Cowan ◽  
Christopher J. Barnett ◽  
Stephanie R. Pendlebury ◽  
Monica Barroso ◽  
Kevin Sivula ◽  
...  
Keyword(s):  
Activation Energies ◽  
Rate Limiting Step ◽  
Limiting Step ◽  
Rate Limiting ◽  
Water Photooxidation
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