ABiCl_(0.7)I_(0.3)-ZnFe_(2)O_(4)复合材料的制备及其Cr(Ⅵ)还原  

Preparation of ABiCl_(0.7)I_(0.3)-ZnFe_(2)O_(4)composites and their performance in Cr(Ⅵ)reduction

作　　者：徐姗姗 胡文文 张宇达 柳成荫 李晓强[1] Xu Shanshan;Hu Wenwen;Zhang Yuda;Liu Chengyin;Li Xiaoqiang(School of Environmental and MaterialEngineering,Yantai University,Yantai 264005,Shandong,China)

机构地区：[1]烟台大学环境与材料工程学院,山东烟台264005

出　　处：《工业催化》2024年第1期50-59,共10页Industrial Catalysis

摘　　要：采用水热法成功合成ZnFe_(2)O_(4)材料,利用原位生长法制备一系列ABiCl_(0.7)I_(0.3)-ZnFe_(2)O_(4)复合材料。通过在可见光照射下对Cr(Ⅵ)的光降解效果评估ABiCl_(0.7)I_(0.3)-ZnFe_(2)O_(4)复合材料的光催化性能,结果表明,ABiCl_(0.7)I_(0.3)-ZnFe_(2)O_(4)比ABiCl_(0.7)I_(0.3)(ABiClI)或ZnFe_(2)O_(4)(ZFO)具有增强的光催化活性,其中ABiClI-ZFO-1对Cr(Ⅵ)具有最好的去除效率,在可见光照射30 min后,对Cr(Ⅵ)的去除率达到100%。通过电化学阻抗谱(EIS)和光致发光(PL)对载流子行为的研究表明,固溶体和异质结的协同作用共同促进了光生电子(e-)和空穴(h+)的高效分离和转移,从而产生更高的光催化活性。ZnFe_(2)O_(4)materials were successfully synthesized by hydrothermal method,and a series of ABiCl_(0.7)I_(0.3)-ZnFe_(2)O_(4)composites were prepared by in situ growth method.The photocatalytic performance of ABiCl_(0.7)I_(0.3)-ZnFe_(2)O_(4)composites was evaluated by photodegradation of Cr(Ⅵ)under visible light irradiation.The results showed that ABiCl_(0.7)I_(0.3)-ZnFe_(2)O_(4)had enhanced photocatalytic activity than ABiCl_(0.7)I_(0.3)(ABiClI)or ZnFe_(2)O_(4)(ZFO).ABiClI-ZFO-1 had the best removal efficiency for Cr(Ⅵ),and the removal effiency reached 100%after 30 min under visible light irradiation.Studies on charge carrier behavior by electrochemical impedance spectroscopy(EIS)and photoluminescence(PL)showed that the synergistic effect of solid solution and semiconductor composite jointly promotes the efficient separation and transfer of photogenerated electrons(e-)and holes(h+),resulting in the high photocatalytic activity.

关 键 词：复合材料 BiOX 固溶体 ZnFe_(2)O_(4) Cr(Ⅵ) 异质结 

分 类 号：TQ034[化学工程] O643.36[理学—物理化学]