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.bekindtopets.com/flash-find-Winmau-Firestorm-Steel-Tip-Darts-24gm-special-save/