CAJ | 학술논문

采用溶胶-凝胶法制备了Ce-SiO2-TiO2三元复合纳米催化剂,用TG-DTA、FT-IR、XRD和UV-Vis等对样品的结构进行了表征,并以罗丹明B(RhB)作为探针反应,分别在紫外光和可见光照下评价了其光催化性能.与TiO2一元纳米催化剂和Ce-TiO2、SiO2-TiO2二元纳米催化剂进行对比,Ce-SiO2-TiO2三元复合纳米催化剂对罗丹明B溶液(5 mg/L)表现出更高的光催化降解性能,可见光下的降解率达到98.5%.
채용용효-응효법제비료Ce-SiO2-TiO2삼원복합납미최화제,용TG-DTA、FT-IR、XRD화UV-Vis등대양품적결구진행료표정,병이라단명B(RhB)작위탐침반응,분별재자외광화가견광조하평개료기광최화성능.여TiO2일원납미최화제화Ce-TiO2、SiO2-TiO2이원납미최화제진행대비,Ce-SiO2-TiO2삼원복합납미최화제대라단명B용액(5 mg/L)표현출경고적광최화강해성능,가견광하적강해솔체도98.5%.
The ternary composite nano photocatalysts of Ce-SiO2-TiO2 were prepared by sol-gel meth-od, which were characterized by TG-DTA, FT-IR, XRD and UV-Vis. The photocatalytic activities of Ce-SiO2-TiO2 nanocomposites were investigated for the degradation of Rhodamine B (RhB) as a probe under the il umina-tion of UV and visible light. Compared with the photocatalytic activities of TiO2, Ce-TiO2 and SiO2-TiO2, the ter-nary composite nano photocatalyst of Ce-SiO2-TiO2 showed the highest photodegradation, and the photodeg-radation rate of RhB (5 mg/L) could reach above 98.5%under visible light.