Comparative Study on the Catalytic Degradation of Methyl Orange by Silver Nanoparticles Synthesized by Solution Combustion and Green Synthesis Method

Nanosized silver nanoparticle (Ag-NP) powder has been synthesized using solution combustion synthesis method and green biological reduction method. The percentage yield and purity inspection of the synthesized powder was performed and compared by UV–Vis, XRD and SEM. Catalytic activities of the synthesized Ag nanoparticles toward methyl orange dye degradation in the presence of NaBH4 are analyzed and have been compared in terms of percentage reduction, reaction time and apparent reaction rate. Silver nanoparticles synthesized by solution combustion synthesis method showed 94% catalytic degradation and a rate of 0.0725 min−1. The apparent kinetic rate of silver nanoparticles synthesized by solution combustion synthesis method was found to be twelve times faster than that of silver nanoparticles synthesized by green synthesis method.