Effect of Static Magnetic Field on Photocatalytic Degradation of Methylene Blue over ZnO and TiO2 Powders |
| |
Authors: | Supawan Joonwichien Eiji Yamasue Hideyuki Okumura Keiichi N Ishihara |
| |
Institution: | (1) Department of Socio-Environmental Energy Science, Graduate School of Energy Science, Kyoto University, Yoshida Honmachi, Sakyo-ku, Kyoto 606-8501, Japan |
| |
Abstract: | Magnetic field effects (MFEs) on photocatalytic degradation of methylene blue (MB) solution over ZnO and TiO2 powders are investigated under static magnetic field up to 0.7 T with light irradiation by ultraviolet (UV) light emitting
diode. The UV–visible-near-infrared spectrometer is used to monitor the MB concentrations. The positive MFE is observed for
ZnO, while the negative MFE for TiO2, and both MFEs are increased with the increase in the magnetic field applied. By increasing the settling time (the time interval
between the preparation of MB solution and the powder dispersion into the MB solution), the photodegradation abilities under
MFEs are decreased for both the catalysts. The cause of MFE is discussed in terms of dissolved oxygen in the MB solution and
magnetic adsorption of the constituent molecules. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|