Visible Light Composite Photocatalyst CeO2/g-C3N4:Its Preparation and Performance
YUE Panhong
WANG Zehua
YANG Jie
WANG Hanrui
ZHANG Mengfan
LI Chunguang
Abstract：This paper elaborated on a laboratory experiment which dealt with the performance of the visible light catalytic degradation of CeO2/g-C3N4,a novel composite photocatalyst,with tetracycline(TC)as a simulated pollutant,and CeO2/g-C3N4 was prepared by hydrothermal method,besides was characterized by XRD,SEM,UV-Vis,XPS and PL.As a result,the exper-iment showed that CeO2/g-C3N4 composite could broaden the range of CeO2 response to visible light,and effectively inhibit the photoelectron-hole recombination of g-C3N4,compared to solely g-C3N4 or CeO2 improving the activity of CeO2/g-C3N4 photocatalyst obviously.In the case where visible light irradiation lasted 90 min,and concentration of TC solution of 50 mg/L.the photodegradation rate could attain as high as 96.4％.As for the reuse of the catalyst,after five times recycle the efficiency of TC degradation remained at 76.5％,which showed its good stability.In addition,the study on the photocatalytic mechanism revealed that hole(h+)was the main active substance in photocatalytic degradation of TC.
Keywords：CeO2g-C3N4tetracyclinecomposite photocatalystphotocatalytic performance
Publication Date：2023-09-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 18-26 )