GREEN SYNTHESIS AND STUDY ON CATALYTIC ACTIVITY OF SILVER NANOPARTICLES OBTAINED FROM AGLAIA DUPERREANA FLOWER EXTRACT

Abstract

In this work, a green and simple method was utilized to fabricate silver nanoparticles (AgNPs) using Aglaia duperreana extract as reducing and capping agents. The best condition for the AgNPs production were optimized at 30 min, 90 ^oC, and 1.0 mM Ag⁺. A highly crystalline face-centered cubic structure of the biosynthesized silver nanoparticles was confirmed by XRD analysis. FE-SEM measurements showed that, AgNPs were in a spherical shape with an average size of 20 nm. FTIR, EDX, and DLS techniques were also used to identify the presence of biomolecules, playing role in stabilizing the nanoparticles. The fabricated silver nanoparticles were further studied for the reduction reaction of Methylene Blue (MB). The results indicated that AgNPs showed a good catalytic performance in the reduction of MB by NaBH₄. At the temperature of 30^oC, the reduction of MB could be finished after 10 min with the pseudo-first-order rate constant of 1,87.10^-3 s^-1 and activation energy of 15.01 kJ.mol^-1 using AgNPs as catalysts.