Abstract
A new class of molecular-based photoelectrochemical cell for solar hydrogen production consisting of a TiO 2 -based photoanode modified with a polypyridyl ruthenium photosensitizer (Ru-qpy) and a TiO 2 -based cathode modified with a platinum porphyrin H 2 evolution catalyst has been investigated, showing that the electron accumulation at the conduction band of TiO 2 at the photoanode is promoted via electron injection from the Ru-qpy together with hole scavenging by a sacrificial donor. Our study here for the first time unveils that the upward shift given in the Fermi level of the TiO 2 at the photoanode provides an electromotive force required to flow electrical current leading to solar hydrogen production from water even without applying external electrical bias.
| Original language | English |
|---|---|
| Pages (from-to) | 987-992 |
| Number of pages | 6 |
| Journal | ACS Applied Energy Materials |
| Volume | 2 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Feb 25 2019 |
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All Science Journal Classification (ASJC) codes
- Energy Engineering and Power Technology
- Chemical Engineering (miscellaneous)
- Electrochemistry
- Materials Chemistry
- Electrical and Electronic Engineering
Cite this
A New Class of Molecular-Based Photoelectrochemical Cell for Solar Hydrogen Production Consisting of Two Mesoporous TiO 2 Electrodes . / Morita, Kohei; Sakai, Ken; Ozawa, Hironobu.
In: ACS Applied Energy Materials, Vol. 2, No. 2, 25.02.2019, p. 987-992.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A New Class of Molecular-Based Photoelectrochemical Cell for Solar Hydrogen Production Consisting of Two Mesoporous TiO 2 Electrodes
AU - Morita, Kohei
AU - Sakai, Ken
AU - Ozawa, Hironobu
PY - 2019/2/25
Y1 - 2019/2/25
N2 - A new class of molecular-based photoelectrochemical cell for solar hydrogen production consisting of a TiO 2 -based photoanode modified with a polypyridyl ruthenium photosensitizer (Ru-qpy) and a TiO 2 -based cathode modified with a platinum porphyrin H 2 evolution catalyst has been investigated, showing that the electron accumulation at the conduction band of TiO 2 at the photoanode is promoted via electron injection from the Ru-qpy together with hole scavenging by a sacrificial donor. Our study here for the first time unveils that the upward shift given in the Fermi level of the TiO 2 at the photoanode provides an electromotive force required to flow electrical current leading to solar hydrogen production from water even without applying external electrical bias.
AB - A new class of molecular-based photoelectrochemical cell for solar hydrogen production consisting of a TiO 2 -based photoanode modified with a polypyridyl ruthenium photosensitizer (Ru-qpy) and a TiO 2 -based cathode modified with a platinum porphyrin H 2 evolution catalyst has been investigated, showing that the electron accumulation at the conduction band of TiO 2 at the photoanode is promoted via electron injection from the Ru-qpy together with hole scavenging by a sacrificial donor. Our study here for the first time unveils that the upward shift given in the Fermi level of the TiO 2 at the photoanode provides an electromotive force required to flow electrical current leading to solar hydrogen production from water even without applying external electrical bias.
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U2 - 10.1021/acsaem.8b01992
DO - 10.1021/acsaem.8b01992
M3 - Article
VL - 2
SP - 987
EP - 992
JO - ACS Applied Energy Materials
JF - ACS Applied Energy Materials
SN - 2574-0962
IS - 2
ER -