Near-Infrared Plasmon-Assisted Water Oxidation.
We report the stoichiometric evolution of oxygen via water oxidation by irradiating a plasmon-enhanced photocurrent generation system with near-infrared light (λ: 1000 nm), in which gold nanostructures were arrayed on the surface of TiO2 electrode. It is considered that multiple electron holes generated by plasmon-induced charge excitation led to the effective recovery of water oxidation after the electron transfer from gold to TiO2. The proposed system containing a gold nanostructured TiO2 electrode may be a promising artificial photosynthetic system using near-infrared light.
†Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan.
Yoshiaki
Y
Nishijima
†Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan.|‡PRESTO, Japan Science and Technology Agency, Kawaguchi 332-0012, Japan.
Kosei
K
Ueno
†Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan.
Yuki
Y
Kotake
§Division of Chemistry, Graduate School of Science, Hokkaido University, Sapporo 060-0810, Japan.
Kei
K
Murakoshi
∥SORST/JST, Tokyo Metropolitan University, 1-1 minami-ohsawa, Hachiohji, Tokyo 192-0397, Japan.
Haruo
H
Inoue
†Research Institute for Electronic Science, Hokkaido University, Sapporo 001-0021, Japan.
Hiroaki
H
Misawa
gold nanoparticles; surface plasmon resonance; titanium dioxide; water oxidation