Green synthesis of synergistic Ag–Co bimetallic nanoparticles using chickpea sprout water extract for enhanced catalytic reduction of organic pollutants and antibacterial applications

A facile, green synthesis method for Ag–Co bimetallic nanoparticles was developed using chickpea sprout water extract as both the reducing and stabilizing agent. The phytochemical biomolecules in the sprout extract enabled seedless, one-pot synthesis of monometallic (Ag100, Co100) and three compositional bimetallic nanoparticles (Ag25Co75, Ag50Co50, Ag75Co25). Comprehensive characterization by UV–vis, XRD, EDX, NTA, TEM, and SAED confirmed core–shell nanostructures with composition-dependent opt