Monoclinic KNbO3 Nanowires for Photocatalytic Methane Production and Dye Degradation

摘要

The room temperature stabled monoclinic KNbO3 nanowires were found to act as photocatalyst for photocatalytic methane production and dye degradation in this work.Higher activities have been observed for monoclinic phase compared to the reference (orthorhombic phase).In the photoreduction of CO2 reaction,the monoclinic KNbO3 nanowires exhibited a CH4 evolution rate of 0.025 μmol·g-1·h-1,which was higher than 0.021 μmol·g-1·h-1 of orthorhombic KNbO3 nanowires.In the photodegradation of rhodamine B (RhB),almost all the RhB were degraded after 90 min light illumination for monoclinic KNbO3 nanowires.But for orthorhombic KNbO3 nanowires,the concentration of RhB only decreased to 62％ of the initial value.