Ag_2S/Ag_3VO_4催化剂的制备、表征及其在光催化性能研究  

Synthesis,Characterization and Photocatalytic Activity of Ag_2S/Ag_3VO_4Catalyst

作　　者：梁倩[1] 金杰[1] 李忠玉[1] 

机构地区：[1]常州大学石油化工学院,江苏常州213164

出　　处：《常州大学学报（自然科学版）》2017年第5期1-7,共7页Journal of Changzhou University：Natural Science Edition

基　　金：江苏省自然科学基金青年基金资助项目(BK20150259)

摘　　要：采用原位离子交换法成功制备了新型复合催化剂Ag_2S/Ag_3VO_4,并考察其在可见光照射下光降解罗丹明B的性能。通过扫描电镜(SEM),投射电镜(TEM),X射线粉末衍射仪(XRD),紫外可见漫反射(UVVis),红外光谱(FT-IR)等手段对所合成的复合材料进行表征。结果表明,与Ag_2S耦合后,Ag_3VO_4的光催化活性和稳定性得到明显提高。可见光照射100min后,0.8%Ag_2S/Ag_3VO_4复合催化剂对罗丹明B的光降解率达到95.6%,4次循环反应后仍能保持较高的光催化活性(75%)。The novel composite Ag_2S/Ag_3VO_4 was successfully prepared by in-situ ion exchange,and the photocatalytic degradation of Rhodamine B（RhB）under visible light irradiation was investigated.The as-prepared samples were characterized by scanning electron microscopy（SEM）,transmission electron microscopy（TEM）,X-ray diffraction（XRD）,UV-Vis diffused reflectance spectra（UV-Vis）and Fourier transform infrared spectra（FT-IR）.The results indicate that after introduction of Ag_2S,the photocatalytic activity and stability of Ag_3VO_4 are obviously enhanced.For 0.8% Ag_2S/Ag_3VO_4 composite,RhB removal rate reaches 95.6% within 100 min under visible light irradiation,and after fourth cycle,the photocatalytic degradation rate still reaches 75%.

关 键 词：Ag2S/Ag3VO4 离子交换法 光催化降解 

分 类 号：TQ426.8[化学工程]