Visible-Light-Induced Water Splitting Based on Two-Step Photoexcitation between Dye-Sensitized Layered Niobate and Tungsten Oxide Photocatalysts in the Presence of a Triiodide/Iodide Shuttle Redox Mediator

2013 ◽  
Vol 135 (45) ◽  
pp. 16872-16884 ◽  
Author(s):  
Ryu Abe ◽  
Kenichi Shinmei ◽  
Nagatoshi Koumura ◽  
Kohjiro Hara ◽  
Bunsho Ohtani
Keyword(s):  
Visible Light ◽  
Tungsten Oxide ◽  
Water Splitting ◽  
Redox Mediator ◽  
Dye Sensitized ◽  
Layered Niobate ◽  
And Tungsten

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.

scholarly journals Manganese‐Substituted Polyoxometalate as an Effective Shuttle Redox Mediator in Z‐Scheme Water Splitting under Visible Light

ChemSusChem ◽  
2016 ◽  
Vol 9 (16) ◽  
pp. 2201-2208 ◽  
Author(s):  
Kohei Tsuji ◽  
Osamu Tomita ◽  
Masanobu Higashi ◽  
Ryu Abe
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
Redox Mediator

Mono-Transition-Metal-substituted Polyoxometalates as Shuttle Redox Mediator for Z-scheme Water Splitting under Visible Light

2021 ◽  
Author(s):  
Osamu Tomita ◽  
Hiroki Naito ◽  
Akinobu Nakada ◽  
Masanobu Higashi ◽  
Ryu Abe
Keyword(s):  
Electron Transfer ◽  
Transition Metal ◽  
Visible Light ◽  
Water Splitting ◽  
Redox Mediator

Because the majority of Z-scheme water splitting systems employ a shuttle redox mediator that allows electron transfer between two photocatalyst materials, the development of an effective redox mediator is crucial...

Efficient Redox-Mediator-Free Z-Scheme Water Splitting Employing Oxysulfide Photocatalysts under Visible Light

ACS Catalysis ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. 1690-1696 ◽  
Author(s):  
Song Sun ◽  
Takashi Hisatomi ◽  
Qian Wang ◽  
Shanshan Chen ◽  
Guijun Ma ◽  
...  
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
Redox Mediator

scholarly journals An Artificial Z-Scheme Constructed from Dye-Sensitized Metal Oxide Nanosheets for Visible Light-Driven Overall Water Splitting

2020 ◽  
Vol 142 (18) ◽  
pp. 8412-8420 ◽  
Author(s):  
Takayoshi Oshima ◽  
Shunta Nishioka ◽  
Yuka Kikuchi ◽  
Shota Hirai ◽  
Kei-ichi Yanagisawa ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Visible Light ◽  
Water Splitting ◽  
Dye Sensitized ◽  
Overall Water Splitting ◽  
Visible Light Driven

scholarly journals Metal-free organic sensitizers for use in water-splitting dye-sensitized photoelectrochemical cells

2015 ◽  
Vol 112 (6) ◽  
pp. 1681-1686 ◽  
Author(s):  
John R. Swierk ◽  
Dalvin D. Méndez-Hernández ◽  
Nicholas S. McCool ◽  
Paul Liddell ◽  
Yuichi Terazono ◽  
...  
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
Red Light ◽  
Photoelectrochemical Cells ◽  
Slow Electron ◽  
Free Base ◽  
Metal Free ◽  
Dye Sensitized ◽  
Water Photoelectrolysis ◽  
Organic Sensitizers

Solar fuel generation requires the efficient capture and conversion of visible light. In both natural and artificial systems, molecular sensitizers can be tuned to capture, convert, and transfer visible light energy. We demonstrate that a series of metal-free porphyrins can drive photoelectrochemical water splitting under broadband and red light (λ > 590 nm) illumination in a dye-sensitized TiO2 solar cell. We report the synthesis, spectral, and electrochemical properties of the sensitizers. Despite slow recombination of photoinjected electrons with oxidized porphyrins, photocurrents are low because of low injection yields and slow electron self-exchange between oxidized porphyrins. The free-base porphyrins are stable under conditions of water photoelectrolysis and in some cases photovoltages in excess of 1 V are observed.

Photoassisted Overall Water Splitting in a Visible Light-Absorbing Dye-Sensitized Photoelectrochemical Cell

2009 ◽  
Vol 131 (3) ◽  
pp. 926-927 ◽  
Author(s):  
W. Justin Youngblood ◽  
Seung-Hyun Anna Lee ◽  
Yoji Kobayashi ◽  
Emil A. Hernandez-Pagan ◽  
Paul G. Hoertz ◽  
...  
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
Photoelectrochemical Cell ◽  
Dye Sensitized ◽  
Overall Water Splitting

Dye-Sensitized Photocatalyst System for Water Splitting Into H2 and O2 Under Visible Light Irradiation

Solar Energy ◽  
2004 ◽  
Author(s):  
Ryu Abe ◽  
Kazuhiro Sayama ◽  
Hironori Arakawa
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Energy Gap ◽  
H2 Production ◽  
Light Irradiation ◽  
Mixed Solution ◽  
Tio2 Photocatalysts ◽  
Dye Sensitized ◽  
Splitting System

H2 production from a water-acetonitrile mixed solution containing iodide electron donor was investigated over dye-sensitized Pt/TiO2 photocatalysts under visible light irradiation, as a part of water splitting system using iodide redox mediator. The rates of H2 evolution were decreased with the increase of the water ratio in the mixed solutions, because of the decrease in energy gap between the redox potential of I3−/I− and the HOMO levels of the dyes, which lowing the efficiency of electron transfer from I− to dye.

Sign in / Sign up

Export Citation Format

Share Document