摘要
采用水热合成法在不同温度、不同pH条件下合成了可见光响应的Bi2WO6催化剂,利用XRD、DRS、SEM和UV-vis等技术对其晶型结构、光吸收性能和形貌等进行了表征.以罗丹明B为目标降解物,以氙灯为光源,探讨了不同条件下制备的Bi2WO6的光催化活性.结果表明,在160℃、pH=1条件下制备的催化剂的活性最佳,这与其具有小的粒径、大的比表面积等因素有关.
Bi2WO6 excitated by visible light was prepared at different temperatures and pH by hydrothermal method. The samples were characterized by XRD, DRS, SEM and UV-vis technologies. Photocatalytic activity of Bi2 WO6 was evaluated via photocatalytic degradation of Rhodamine B under xenon lamp irradiation. The results showed that catalyst prepared at 160 ℃ and pH= 1 has the best photocatalytic activity, which is related to its small size and large surface area.
出处
《延边大学学报（自然科学版）》
CAS
2009年第4期335-339,共5页
Journal of Yanbian University（Natural Science Edition）
关键词
Bi2WO6
水热法
可见光
光催化
Bi2WO6
hydrothermal method
visible light
photocatalysis
