Immobilization of Ag and Pd over a novel amide based covalent organic framework (COF-BASU2) as a heterogeneous reusable catalyst to reduce nitroarenes

•A new strategy was designed to synthesize a new amide-based COF through the reaction between 1,4‑diaminobenzene and trimesic acid (BTC).•The surface of synthesized COF (COF-BASU2) is decorated via silver (Ag) and palladium (Pd) ions to synthesize Ag/COF-BASU2 and Pd/COF-BASU2.•Ag/COF-BASU2 was used as a potential catalyst for the reduction of nitrobenzene derivatives in the presence of NaBH4.•Pd/COF-BASU2 was used as a potential catalyst for the reduction of nitrobenzene derivatives in the presence of H2.•According to the obtained results, using Ag/COF-BASU2 offers the highest yields in the shortest reaction time.