Green synthesis, characterization and Photocatalytic Reduction of Congo red using Silver Nanoparticles from Millingtonia hortensis leaf extract

Abstract

Day-to-day increasing in the usage of organic dye and disposed waste has increases the environmental pollution. So there is an emergency need to removal of toxic dyes solution itself non-toxic. In the present work, green synthesis of silver nanoparticles (Ag NPs) from silver ions using the reducing and capping agent of Millingtonia hortensis leaf broth. UV-Vis absorbance spectral value at 423 nm was confirmed the product of Ag NPs. X-ray diffraction (XRD) analysis and selected area electron diffraction (SAED) pattern was confirm the crystalline nature of metallic silver. High resolution transmission electron microscope (HRTEM)analysis morphology of images identified the spherical shape particles with sizes from 20 to 50nm. The product of Ag NPs was applied as photocatalyst in the reduction/degradation of Congo red in the presence of NaBH4 under different experimental conditions to confirm the pseudo first order kinetics. The Ag NPs was good photocatalyst in the reduction/degradation of Congo red within 14 min.