ZnO/石墨烯复合光催化材料的制备及性能研究
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摘要
本文采用将ZnO与石墨烯制成复合光催化材料并使其催化分解亚甲基蓝的方法来研究光催化剂对污染物的分解效率。采用扫描电镜分析(SEM)和X射线能谱分析(EDS)等方法对所制备的光催化剂样品进行表征,通过表征结果可以看到石墨烯均匀的生长在纳米ZnO六方晶型结构上,表明ZnO/石墨烯复合光催化材料已经成功制备。通过使用光催化剂对亚甲基蓝的降解考察了其光催化性能,结果表明醇热法制备的ZnO/石墨烯复合材料对亚甲基蓝具有很好的光催化降解效果。
In this paper,ZnO and graphene were used as composite photocatalytic materials to catalyze the decomposition of methylene blue to study the decomposition efficiency of photocatalyst to pollutants.The prepared photocatalyst samples were characterized by scanning electron microscopy(SEM)and Xray energy dispersive spectroscopy(EDS). The results showed that the graphene could grow uniformly in the nano-ZnO hexagonal structure,which indicated that ZnO/graphene composite photocatalytic materials had been successfully prepared. The photocatalytic performance of methylene blue was investigated by photocatalytic degradation of methylene blue. The results showed that the ZnO/graphene composites prepared by alcohol thermal method had good photocatalytic degradation effect on methylene blue.
In this paper,ZnO and graphene were used as composite photocatalytic materials to catalyze the decomposition of methylene blue to study the decomposition efficiency of photocatalyst to pollutants.The prepared photocatalyst samples were characterized by scanning electron microscopy(SEM)and Xray energy dispersive spectroscopy(EDS). The results showed that the graphene could grow uniformly in the nano-ZnO hexagonal structure,which indicated that ZnO/graphene composite photocatalytic materials had been successfully prepared. The photocatalytic performance of methylene blue was investigated by photocatalytic degradation of methylene blue. The results showed that the ZnO/graphene composites prepared by alcohol thermal method had good photocatalytic degradation effect on methylene blue.
引文
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[2]Hamidi A A,Irdan D.Review of the mechanism and operational factors influencing the degradation process of contaminants in heterogenous photocatalysis[J].Journal of Chemical Research,2016,40(2):704-712.
[3]黄进.光催化氧化降解水中有机污染物技术综述[J].重庆环境科学,2001,23(5):1-2.
[4]Shixin W,Qiyuan H.Electrochemical deposition of semiconductor oxides on reduced graphene oxide-based flexible,transparent,and conductive electrodes[J].Phys.Chem.C.2010,1(14):11816-11821.
[5]王文杰.石墨烯复合材料的制备及其在污水处理中的应用研究[D].天津:河北工业大学,2015.
[6]Xu Z,Buehler M J.Interface structure and mechanics between graphene and metal substrates:a first-principles study[J].Condensed Matter:An Institute of Physics Journal,2010,22(48):45-51.
[7]William S,Hummers J R,Richard E.Preparation of graphitic oxide[J].Materials Science and Engineering,2001,140(1):816-824.