镁酞菁/PHBV催化薄膜的制备及光催化性能研究  

Preparation and photocatalytic properties of magnesium phthalocyanine/PHBV films

作　　者：徐敏虹[1] 王坤燕[1] 潘国祥[1] 郭玉华[1] 伍涛[1] 

机构地区：[1]湖州师范学院工学院,浙江湖州313000

出　　处：《功能材料》2017年第6期6119-6123,6128,共6页Journal of Functional Materials

基　　金：国家社会科学基金特别委托资助项目(16@ZH005);浙江省自然科学基金资助项目(LQ14B040003;LY17E040001);湖州师范学院校级科研成果资助项目(2017XJXM38)

摘　　要：将四氨基镁酞菁(MgPc)负载到PHBV上制备复合催化薄膜(MgPc/PHBV)。采用XRD、FT-IR、TGDTA和UV-Vis DRS等表征技术对MgPc/PHBV的结构和性质进行表征。结果表明,MgPc和PHBV之间可能通过物理作用结合;MgPc的加入降低PHBV的结晶度;并且将PHBV的分解温度提高20℃。基于UV-Vis DRS的测试表明MgPc/PHBV薄膜具有可见光催化活性。此外,MgPc/PHBV光催化降解有机污染物甲基橙的结果表明,光照、MgPc/PHBV和H_2O_2同时存在时才能催化氧化甲基橙;光照160 min后,甲基橙剩余率为0.0%,甲基橙完全被降解。光催化氧化反应中羟基自由基发挥着关键作用。The composite catalytic films MgPc/PHBV are prepared by loading MgPc onto the PHBV.The structures and properties of MgPc/PHBV are characterized by XRD,FT-IR,TG-DTA and UV-Vis DRS.The results indicate that MgPc and PHBV may be combined by physical action.Adding MgPc makes the crystallinity of PHBV decrease.In addition,the degradation temperature of PHBV increased 20℃ due to MgPc.Tests based on UV-Vis DRS show that the MgPc/PHBV has visible light catalytic activity.Therefore,photocatalytic degradation of organic pollutants methyl orange（MO）with MgPc/PHBV is studied.It is found that MO can only be effectively photocatalytic degradated when light,MgPc/PHBV and H_2O_2 simultaneously present.The residual rate of MO is 0.0% after 160 min illumination,which means MO is completely degraded.Hydroxyl radicals play a key role in photocatalytic oxidation of MO based on the study of reaction mechanism.

关 键 词：镁酞菁 PHBV 光催化 甲基橙 羟基自由基 

分 类 号：O632.52[理学—高分子化学]