Oxidation of multicarbon compounds to CO2by photocatalysts with energy storage abilities.
Photocatalysts can be used for removal of harmful or odorous organic compounds, but only under illumination. We previously developed a TiO2/Ni(OH)2photocatalyst with an oxidative energy storage ability, and used it for oxidation of monocarbon compounds such as methanol and formaldehyde to CO2by the stored energy. Here, we report that TiO2/Ni(OH)2charged with oxidative energy can also oxidize multicarbon compounds such as acetaldehyde, acetic acid and acetone to CO2even in the dark. We also report that MnOxcan be used as an oxidative energy storage material if it is not in direct contact with the TiO2photocatalyst (e.g. TiO2/nanoporous SiO2/MnOx). Photocatalytically charged MnOxcan also oxidize methanol, acetaldehyde, acetic acid and acetone to CO2.
Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan.
Yoshinori
Y
Kuroiwa
Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan.
Susie
S
Park
Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan and International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Namiki, Tsukuba, Ibaraki 305-0044, Japan.
Nobuyuki
http://orcid.org/0000-0002-9395-6751
N
Sakai
Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan.
Tetsu
http://orcid.org/0000-0001-8738-9837
T
Tatsuma