Synthesis, characterization, and catalytic activity for hybrids of multi-walled carbon nanotube and amphiphilic poly(propyleneimine) dendrimer immobilized with silver and palladium nanoparticle

► Immobilization of Ag and PdNPs on MWCNT-APPI (G2) and MWCNT-APPI (G3) nanohybrids. ► Four types of MWCNT based nanohybrid catalysts were synthesized. ►MWCNT-APPI (G3)-PdNPs was proved as an efficient catalyst for 4-NP reduction.