scholarly journals Two-step photocatalytic water splitting into H2 and O2 using layered metal oxide KCa2Nb3O10 and its derivatives as O2-evolving photocatalysts with IO3−/I− or Fe3+/Fe2+ redox mediator

2015 ◽  
Vol 5 (5) ◽  
pp. 2640-2648 ◽  
Author(s):  
Hajime Suzuki ◽  
Osamu Tomita ◽  
Masanobu Higashi ◽  
Ryu Abe
Keyword(s):  
Metal Oxide ◽  
Water Splitting ◽  
Redox Mediator ◽  
Electron Mediator ◽  
Photocatalytic Water Splitting

Two-step water splitting into H2 and O2 is demonstrated using KCa2Nb3O10 and its derivatives as O2-evolving photocatalysts combined with a H2-evolving photocatalyst in the presence of IO3−/I− or Fe3+/Fe2+ as an electron mediator.

Photocatalytic water splitting employing a [Fe(CN)6]3−/4− redox mediator under visible light

2019 ◽  
Vol 9 (8) ◽  
pp. 2019-2024 ◽  
Author(s):  
Yugo Miseki ◽  
Kazuhiro Sayama
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Redox Mediator ◽  
Photocatalytic Water Splitting ◽  
Surface Modified

Surface-modified WO3, as an oxygen evolution photocatalyst for Z-scheme water splitting employing a [Fe(CN)6]3−/4− redox mediator, is successfully constructed.

Decoupled catalytic hydrogen evolution from a molecular metal oxide redox mediator in water splitting

Science ◽  
2014 ◽  
Vol 345 (6202) ◽  
pp. 1326-1330 ◽  
Author(s):  
B. Rausch ◽  
M. D. Symes ◽  
G. Chisholm ◽  
L. Cronin
Keyword(s):  
Metal Oxide ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Redox Mediator ◽  
Catalytic Hydrogen ◽  
Catalytic Hydrogen Evolution

Photocatalytic water splitting and hydrogenation of CO2 in a novel twin photoreactor with IO3−/I− shuttle redox mediator

2016 ◽  
Vol 518 ◽  
pp. 158-166 ◽  
Author(s):  
Sheng-Hung Yu ◽  
Cheng-Wei Chiu ◽  
Yi-Ting Wu ◽  
Chi-Hung Liao ◽  
Van-Huy Nguyen ◽  
...  
Keyword(s):  
Water Splitting ◽  
Redox Mediator ◽  
Photocatalytic Water Splitting ◽  
Hydrogenation Of Co2

scholarly journals Charge carrier mapping for Z-scheme photocatalytic water-splitting sheet via categorization of microscopic time-resolved image sequences

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Makoto Ebihara ◽  
Takeshi Ikeda ◽  
Sayuri Okunaka ◽  
Hiromasa Tokudome ◽  
Kazunari Domen ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Water Splitting ◽  
Indium Tin Oxide ◽  
Cost Effective ◽  
Optimization Methods ◽  
Electron Mediator ◽  
Time Resolved ◽  
Illumination Time ◽  
Photocatalytic Water Splitting ◽  
Charge Carrier Dynamics

AbstractPhotocatalytic water splitting system using particulate semiconductor materials is a promising strategy for converting solar energy into hydrogen and oxygen. In particular, visible-light-driven ‘Z-scheme’ printable photocatalyst sheets are cost-effective and scalable. However, little is known about the fundamental photophysical processes, which are key to explaining and promoting the photoactivity. Here, we applied the pattern-illumination time-resolved phase microscopy for a photocatalyst sheet composed of Mo-doped BiVO4 and Rh-doped SrTiO3 with indium tin oxide as the electron mediator to investigate photo-generated charge carrier dynamics. Using this method, we successfully observed the position- and structure-dependent charge carrier behavior and visualized the active/inactive sites in the sheets under the light irradiation via the time sequence images and the clustering analysis. This combination methodology could provide the material/synthesis optimization methods for the maximum performance of the photocatalyst sheets.

General Route to Functional Metal Oxide Nanosuspensions, Enzymatically Deshelled Nanoparticles, and Their Application in Photocatalytic Water Splitting

Small ◽  
2011 ◽  
Vol 7 (7) ◽  
pp. 869-873 ◽  
Author(s):  
Carolina Neudeck ◽  
Yi-Yeoun Kim ◽  
Wataru Ogasawara ◽  
Yosuke Shida ◽  
Fiona Meldrum ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Water Splitting ◽  
Photocatalytic Water Splitting
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