Anchoring of AgNi Bimetallic Nanoparticles on g‐C₃N₄ Sheet: An Efficient Synergistic Strategy for Visible‐Light Driven Sustainable Multifunctional Photocatalysis

This study offers an efficient in situ co‐reduction technique for synthesizing AgNi bimetallic nanoparticles. The potential of the AgNi bimetallic nanoparticle was explored as heterogeneous catalyst in photocatalytic conversion of benzaldehyde to benzonitrile derivatives, which serves as a key moiety in pharmaceutical and agrochemical compounds. Green catalysis compatibility of our as‐synthesized materials was tested in the synthesis of one of the most prominent medicinal compounds, quinazolin‐4( 3H )‐one that too under visible‐light irradiation and solvent‐free condition at room temperature. Surprisingly, after anchoring AgNi nanoparticles on g‐C 3 N 4 resulted in an enhanced photocatalytic activity for both the reactions supressing the performance of bare AgNi bimetallic nanoparticles. The structural and morphological examination of the AgNi/g‐C 3 N 4 nanocomposite revealed that the bimetallic nanoparticles are uniformly distributed over g‐C 3 N 4 without any possible aggregation. The nanocomposite had improved photoresponse qualities, reduced recombination and an extended lifespan. Following that, our proposed photocatalytic system with AgNi/g‐C 3 N 4 nanocomposite resulted prominent product yields for both the reactions. Our findings provide experimental validation of a green‐sustainable alternative to replace harsh conventional methods used for the synthesis of those crucial compounds. Our study will lead the way to reveal the synergism of suitable g‐C 3 N 4 ‐based bimetallic nanoparticle systems and their promising avenue toward sustainable photocatalysis.