Fe_3O_4/g-C_3N_4复合材料的光催化性能研究  

Photocatalytic Performance of Fe_3O_4/g-C_3N_4 Composite

作　　者：蒋露跃 吴卫红[1] 陈建军[1] 周溶冰[1] 姚志通[1] 叶昆 JIANG Luyue;WU Weihong;CHENG Jianjun;ZHOU Rongbing;YAO Zhitong;YE Kun(College of Materials and Environmental Engineering,Hangzhou Dianzi University,Hangzhou Zhejiang 310018,China)

机构地区：[1]杭州电子科技大学材料与环境工程学院,浙江杭州310018

出　　处：《杭州电子科技大学学报（自然科学版）》2018年第1期86-89,102,共5页Journal of Hangzhou Dianzi University：Natural Sciences

基　　金：国家自然科学基金资助项目(51606055);浙江省自然科学基金资助项目(LY14D010009)

摘　　要：通过一个简单的煅烧方法制备出磁性光催化剂Fe_3O_4/g-C_3N_4,并通过热重分析仪(TG)、粉末X射线衍射(XRD)、透射电子显微镜(TEM)进行表征。通过在可见光条件照射下降解罗丹明B(RhB)溶液评价其光催化性能。实验结果显示含Fe_3O_4质量分数为17.7%的Fe_3O_4/g-C_3N_4表现出的光催化性能最高,其在2h内降解了98.2%的RhB溶液。表征结果显示纳米Fe_3O_4均匀地沉积在片状g-C_3N_4表面。Fe_3O_4的掺杂增强了g-C_3N_4的光催化活性,这种增强作用可归因于Fe_3O_4和g-C_3N_4之间具有协同作用。A magnetic photocatalytic Fe 3O 4/g-C 3N 4 composite was synthesized using a simple calcination method.It was characterized by powder X-ray diffraction(XRD),transmission electron microscopy(TEM),and UV-Vis.The photocatalytic properties of the synthesized Fe 3O 4/g-C 3N 4 were evaluated by degrading Rhodamine B(RhB)in aqueous medium under visible-light irradiation.The Fe 3O 4/g-C 3N 4 composite with 17.7%content of Fe 3O 4 exhibited the highest photocatalytic activity,it could degrade 92.5%RhB in 2 h.The results indicated that the nano-Fe 3O 4 was uniformly deposited on the surface of sheet-shaped g-C 3N 4.The activity of photocatalytic was enhanced by doping Fe 3O 4.This enhancement could be attributed to the synergistic effect between Fe 3O 4 and g-C 3N 4.

关 键 词：g-C3N4 光催化 可见光 降解RhB 

分 类 号：X703[环境科学与工程—环境工程]