Bi2WO6纳米片的熔盐法合成及其可见光光催化性能

The Synthesis of Bi2WO6 by Molten Salt Method and its Visible Light Photocatalytic Properties

该研究采用低温熔盐法快速合成Bi2WO6纳米片,并对不同加料顺序制备的Bi2WO6的形貌、结构以及光催化性能进行研究.利用X-射线衍射(XRD)、扫描电子显微镜(SEM)、傅里叶红外光谱(FT-IR)、比表面积(BET)、荧光光谱(PL)等手段对Bi2WO6光催化剂的结构、形貌及荧光性质进行了表征,并测定了Bi2WO6光催化剂在可见光条件下对罗丹明B溶液的降解性能.结果表明:先将KNO3和Bi(NO3)3·5H2O混合研磨之后,再加Na2WO4·2H2O的加料顺序制备的Bi2WO6纳米片光催化性能最好,光照60min后降解率高达98.09%.

Bi2WO6 nanosheets were synthesized rapidly by low temperature molten salt method.The morphology,structure and photocatalytic properties of Bi2WO6 synthesized under different feeding sequence were characterized by X-ray diffraction (XRD),scanning electron microscopy (SEM),Fourier transform infrared spectroscopy (FT-IR),Specific surface area (BET) and Photoluminescence (PL).Furthermore, the degradation performance of Bi2WO6 photocatalyst on rhodamine B solution under visible light was also determined.The results showed that Bi2WO6 prepared by mixing KNO3 and Bi(NO3 ) 3·5H2O firstly and then adding Na2WO4·2H2O had the best photocatalytic performance,and the degradation rate of Bi2WO6 photocatalyst was as high as 98.09% after irradiation for 60 minutes.and Their Visible-Light Photocatalytic Performance.