【摘要】 本课题利用水热法一步合成了钼酸铋（Bi₂Mo O₆）和钨酸铋（Bi₂WO₆）两种半导体光催化剂。借助红外光谱（IR）、X射线衍射光谱（XRD）和扫描电子显微镜（SEM）对样品的物相结构、表面结构进行了表征。以罗丹明B为目标降解物,借助太阳光为光源,研究了两种催化剂材料在不同光催化时间下对有机染料的光催化性能影响。结果表明,纳米片结构的Bi₂WO₆对有机染料的降解综合性能要优越于纳米线团簇结构的Bi₂Mo O₆材料,尤其是Bi₂WO₆催化剂对罗丹明B染料的降解度在光催化5小时后可以达到80%。更多还原

【Abstract】 Two different semiconductor photocatalysts Bi₂ Mo O₆ and Bi₂WO₆ were synthesized by a simple one-pot hydrothermal reaction at 453 K for 24 h. The properties of the photocatalysts, including structures and morphology were characterized by X-ray diffraction, scanning electron microscopy. Further, their photocatalytic properties were compared by the degradation of Rhodamine B at the same conditions under the irradiation of solar light. When used as photocatalysts, the as-obtained Bi₂WO₆ material with nanoplate structure exhibited better photocatalytic activity than the Bi₂ Mo O₆ material with nanowires aggregates for the degradation of organic contamination in water. Especially, the Bi₂WO₆ photocatalyst can make the degradation rate of Rhodamine B reached 80 % after irradiated for 5 hours.更多还原