Enhanced photocatalytic performance of S-scheme CdMoO_(4)/CdO nanosphere photocatalyst  

作　　者：Zhe Chen Tinglin Ma Zongjun Li Wenjing Zhu Lingling Li 

机构地区：[1]School of Material Science and Technology,Jilin Institute of Chemical Technology,Jilin 132022,China

出　　处：《Journal of Materials Science & Technology》2024年第12期198-207,共10页材料科学技术（英文版）

基　　金：National Natural Science Foundation of China(Grant No.22278172);Education Department Project of Jilin Province(Nos.YDZJ202201ZYTS591,20210509049RQ).

摘　　要：The photoabsorption capacity,the number of active sites,and the efficiency of carrier separation of photo-catalysts are the main factors that restrict photocatalytic activity.Accordingly,a series of novel CdO-based S-scheme photocatalysts are prepared by a facile one-step precipitation-calcination method for the first time.Although CdO with a narrow band gap has no photocatalytic hydrogen evolution performance,the CdMoO_(4)/CdO composite exhibits excellent photocatalytic activity.The photocatalytic hydrogen evolution(PHE)performance of the optimal ratio(3∶4)is up to 7029 μmol g^(-1) h^(-1) under visible light irradiation.At the same time,the CdMoO_(4)/CdO composite also shows excellent degradation activity of water pollu-tants,and the degradation efficiency for Tetracycline hydrochloride,Oxytetracycline,Norfloxacin,Reactive red 2,and Levofloxacin is 96.33%,95.38%,88.48%,95.93%,and 77.30%under visible light irradiation for 90min,respectively.According to the experimental characterization and theoretical calculation analysis,the introduction of CdMoO_(4) can be used to construct S-scheme heterojunction with CdO,improving the efficiency of charge separation as well as taking full advantage of redox ability,and hence improving su-perior photocatalysts performance.This work affords new insights into efficient PHE and antibiotic/dye degradation of CdO-based S-scheme photocatalysts.

关 键 词：CdMoO_(4) CDO S-scheme heterojunction Hydrogen evolution Antibiotics degradation 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学] X505[环境科学与工程—环境工程]