摘要
将低温水热法制备的单斜晶型BiVO_4作为载体,采用光还原法获得催化活性提升的Ag/BiVO_4复合材料。通过X射线衍射(XRD)、X射线能谱(EDX)、紫外可见漫反射(UV-DRS)表征方法检测Ag/BiVO_4材料的组成和光学性质,测试了Ag/BiVO_4在可见光照射条件下对罗丹明B(Rh B)的降解性能。结果表明,10 at%Ag/BiVO_4复合材料表现出最佳的光催化活性。本工作合成条件温和、步骤简便,并对银负载钒酸铋光催化剂的催化活性机理进行讨论。
The monoclinic BiVO4 was prepared by low-temperature hydrothermal method as catalyst support and Ag/BiVO4 composites were synthesized by the photo-reduction method. X-ray powder diffraction（XRD）, energy dispersive X-ray spectroscopy（EDX） and UV-Vis diffuse reflectance spectroscopy（DRS）were employed to characterize the composition and structure of the as-synthesized products. The Ag/BiVO4 photocatalysts displayed enhanced photocatalytic activity of Rhodamine B（Rh B）. Moreover, the 10 at% Ag/BiVO4 composite displayed the highest photocatalytic activity. In summary, this work provided a mild and simple synthesis strategy to Ag/BiVO4 samples without involving of any surfactants or adjusting of the p H values of the reaction system as well as give a detail explanation for the enhanced photocatalytic activity.
出处
《广东化工》
CAS
2016年第9期14-15,共2页
Guangdong Chemical Industry
基金
国家自然科学基金(21201135)
