摘要： A novel Z-scheme Polyimide (PI)/AgBr@Ag aerogel photocatalyst has been successfully synthesized by combining in-situ precipitation method and supercritical drying method. The as-prepared PI/AgBr@Ag-50 (50 wt% of AgBr@Ag in PI/AgBr@Ag) aerogel photocatalyst exhibited excellent photocatalytic activity for oxytetracycline degradation with a rate constant of 0.025 min-1, which was 6.9 and 2.6 times as many as that of PI aerogel and AgBr@Ag nanoparticles, respectively. More significantly, PI/AgBr@Ag-50 aerogel photocatalyst showed stable cycling, which could be attributed to the high mechanical strength and 3-D network of PI aerogel. The introduction of AgBr@Ag on PI with the formed hetero-junction structure efficiently promoted the separation of electron-hole pairs by a Z-scheme mechanism. The reduced metallic Ag nanoparticles were found to function as the center for the accumulation of electrons from AgBr to PI. This work found a new application of PI/AgBr@Ag aerogel photocatalyst in environmental protection.