Photodegradation of Methylene Blue Aqueous Solution Sensitized by Pyrochlore-Related κ-CeZrO₄ Oxide Powder

抄録

The photocatalytic degradation of methylene blue aqueous solution sensitized by a pyrochlore-related κ-CeZrO₄ phase was investigated under irradiation with Xe discharge light. The optical absorbance of the solution was first decreased smoothly, and then retention was observed in several hours due to the formation of a new absorption peak. The absorbance spectrum resembled that of thionine. The present study confirms that the photocatalytic reaction sensitized by κ-CeZrO₄ was different from that by TiO₂.