摘要
用共沉淀法制备了不同pH值下的系列可见光催化剂Bi2WO6,用X射线衍射(XRD)、紫外-可见(UV-Vis)漫反射光谱、傅里叶红外变换(FT-IR)光谱技术等手段对催化剂进行了表征。结果显示,随着pH值增大,催化剂晶粒尺寸减小,羟基含量增大。通过对气相苯的降解实验发现,pH=7的Bi2WO6可见光活性最好。
A series of visible light catalysts Bi2WO6 with different PH values were prepared by the co -precipitation method. The catalysts were characterized by XRD, UV- Vis diffuse reflection spectroscopy, FT- TR and XPS. The results showed that the crystal size became smaller and Hydroxyl content became more with increasing PH values. The catalysts with PH = 7 presented the best ultraviolet light and visible light activity of decomposing benzene.
出处
《黔南民族师范学院学报》
2013年第3期116-119,共4页
Journal of Qiannan Normal University for Nationalities
关键词
共沉淀
PH
铋酸钨
可见光
co - precipitation
PH value
Bismuth Tungsten
visible light
