BiFeO_3可见光催化降解甲基紫  

Photocatalytic Degradation of Methyl Violet with BiFeO_3-Visible Light

作　　者：刘亚子[1] 何宇翔[1] 杨绍贵[2] 陈鸿哲 

机构地区：[1]南京大学金陵学院化学与生命科学学院,江苏南京210089 [2]南京大学环境学院污染控制与资源化国家重点实验室,江苏南京210093

出　　处：《化工环保》2013年第6期556-559,共4页Environmental Protection of Chemical Industry

基　　金：江苏省自然科学基金项目(BK2012732)

摘　　要：采用柠檬酸-硝酸盐燃烧法制备了光催化剂BiFeO3。采用SEM,XRD,FTIR等技术对光催化剂BiFeO3进行表征。表征结果显示,光催化剂BiFeO3晶相纯、粒径小、比表面积大,存在Fe—O的弯曲振动和伸缩振动。实验结果表明:通过鼓气及加入H2O2可有效提高BiFeO3对甲基紫可见光催化降解的效率;在300 mL质量分数为1.5×10-5的甲基紫溶液中加入0.9 g光催化剂BiFeO3和0.1 mL质量分数为30%的H2O2溶液,当反应时间为240 min时,甲基紫去除率可达99%。The photocatalyst BiFeO3 was prepared by citrate-nitrate combustion method and characterized by XRD, SEM and FTIR. The characterization results show that the photocatalyst is BiFeO3 with pure crystal phase, little size, large specific surface area, and bending vibration and stretching vibration of Fe-O bond. The experimental results show that： The aeration process and the addition of H2O2 can effectively improve the photocatalytic degradation efficiency of methyl violet with BiFeO3-visible light; When 0.9 g BiFeO3 and 0.1 mL H202 solution with 30% of mass fraction are added into 300 mL methyl violet solution with 1.5 ×10^-5 of mass fraction, the removal rate of methyl violet can reach 99% after reaction for 240 min.

关 键 词：光催化 铁酸铋 甲基紫 燃烧法 降解 废水处理 

分 类 号：X506[环境科学与工程—环境工程]