Cu_(2)O基复合材料光降解罗丹明-B性能研究  

Study on Performance of Cu_(2)O-based Composite Photocatalyst to Degrade Rhodamine-B

作　　者：陆海冰 陶玺 石香香 马紫薇 孙开莲[1] LU Hai-bing;XI Tao;SHI Xiang-xiang;MA Zi-wei;SUN Kai-lian(School of Material and Chemical Engineering,Chuzhou University,Anhui Chuzhou 239000,China)

机构地区：[1]滁州学院材料与化学工程学院,安徽滁州239000

出　　处：《广州化工》2022年第8期71-72,76,共3页GuangZhou Chemical Industry

基　　金：滁州学院大学生创新创业项目(项目编号S202010377117);安徽省高校自然科学研究重点项目(KJ2019A0636)。

摘　　要：室温下通过液相反应合成了Cu_(2)O/C_(3)N_(4)和Cu_(2)O/r-GO(还原石墨烯)两种复合材料。采用XRD、SEM对它们进行物相表征,并分别研究它们在可见光下的光催化降解罗丹明-B性能。与纯Cu_(2) O粉末相比,两种复合光催化剂性能都显著提高,这归功于复合材料中C_(3)N_(4)和/r-GO降低了光生电子和空穴的复合湮灭。Cu_(2)O/r-GO光催化剂中面积较小薄层石墨烯片根植于Cu_(2) O立方体中,起到了转移光生电子的作用。高比表面积C_(3)N_(4)不仅起到了分散作用,可能也作为可见光光催化剂与Cu_(2)O形成异质结。Cu_(2)O/C_(3)N_(4) and Cu_(2)O/r-GO nanocomposites were prepared by liquid-phase reaction at room temperature.XRD and SEM were used to characterize their phase structure and morphology.Their photocatalytic performance to degrade Rhodamine-B under visible light was studied.Two composite photocatalysts had better performance than pure Cu_(2)O,which was attributed to the existence of C_(3)N_(4) and reduced-graphene in the composite materials.In Cu_(2)O/r-GO material,the graphene sheet with small area embedded in the Cu_(2)O cube played the role of transferring photogenerated electrons.Semiconductor C_(3)N_(4) not only dispersed Cu_(2)O,but also formed heterojunction with Cu_(2)O under visible light irradation.

关 键 词：Cu_(2)O Cu_(2)O/C_(3)N_(4) Cu_(2)O/石墨烯 均相还原法光催化降解 罗丹明-B 

分 类 号：O646.542[理学—物理化学]