Bi2O3分级结构/g-C3N4复合光催化剂的制备及性能  

Preparation and Properties of Bi2O3 Hierarchical Structure/g-C3N4 Composite Photocatalyst

作　　者：史妍 陈建军 李舒康 刘梓娴 尹晓钰 徐紫薇 SHI Yan;CHEN Jianjun;LI Shukang;LIU Zixian;YIN Xiaoyu;XU Ziwei(School of Chemistry and Chemical Engineering , Zhengzhou Normal University , Institute of Environmental & Catalytic Engineering , Zhengzhou 450044 , China)

机构地区：[1]郑州师范学院化学化工学院,环境与催化工程研究所,河南郑州450044

出　　处：《河南化工》2020年第7期17-20,31,共5页Henan Chemical Industry

基　　金：河南省科技攻关项目(162102210556);河南省高等学校大学生创新创业训练计划项目(201912949009);郑州师范学院大学生科研创新基金(2018001);郑州师范学院环境催化创新团队(702010);郑州师范学院教学改革研究项目(2018-ZSJGYB-025)。

摘　　要：蝶翅分级结构有利于光捕获的特性。以蝶翅为模板,通过浸泡煅烧方法制备具有蝶翅分级结构的Bi2O3(BHS),然后通过机械混合结合煅烧工艺合成BHS/g-C3N4。利用XRD、SEM、TEM、UV-Vis和PL等方法对样品进行表征,结果表明:与BHS相比,复合催化剂不仅光捕获性能得到提高,而且更有利于光生电子-空穴的分离。此外,对复合催化剂的可见光催化性能进行了测试,结果表明:复合光催化剂的性能明显优于BHS和g-C3N4。其中,BHS与g-C3N4比例为1∶1时光催化性能最好,其优异的光催化性能是分级结构和复合组分协同作用的效果。The hierarchical structure of butterfly wings is beneficial to light capture,the Bi2O3 with hierarchical structure(BHS)is firstly synthesized by impregnation combined with calcination process using butterfly wings as the template,then the BHS/g-C3N4 composite is prepared by mechanical mixing and calcining.The samples are characterized by XRD,SEM,TEM,UV-Vis and PL methods.The results show that compared with BHS,the composites catalyst not only improves the visible light absorption performance,but also facilitates the separation of photogenerated electron-holes.In addition,the visible-light catalytic activity of the composite catalyst is tested.The results demonstrate that the catalytic performance of the composite catalyst is better than that of the BHS and g-C3N4.Among these composite catalyst,BHS/g-C3N4(1∶1)exhibits the best the photocatalytic activity.The higher photocatalytic activity of the composite is probably ascribed to the synergetic effect of the hierarchical structures and composite.

关 键 词：Bi2O3/g-C3N4 光催化 蝶翅 分级结构 

分 类 号：TQ426.6[化学工程]