In this work. magnetic CuFe2O4/Ag nanoparticles activated by porous covalent organic frameworks (COF) was fabricated to evaluate the heterogenous reduction of 4-nitrophenol (4-NP). The core-shell CuFe2O4/Ag@COF was successfully prepared by polydopamine reduction of silver ions on CuFe2O4 nanoparticles. followed by COF layer condensation. https://www.diegojavierfares.com/limited-time-Florida-Gators-NCAA-Mens-Highlights-Swimming-Trunks-p19075-limited-choice/