Green Synthesis of Silver Nanoparticles using Delonix regia Extract, Characterization and its Application as Adsorbent for Removal of Cu (II) Ions from Aqueous Solution

In this research synthesis of silver nanoparticles by a green method is studied. The high importance using extract Delonix regia (DREAgNs) due to their unique properties, such as non-expensive, easily available and have application in water treatment. Synthesized AgNPs were characterized UV-Visible Spectrophotometer indicate the methods. maximum absorbance UV-Vis. analysis at wavelength 464 nm. (FT-IR) spectra functional groups phytochemical compounds (DRE) (DREAgNPs) also shows role active chemical constituents stabilization reduction (DREAgNPs). Based on transmission electron microscopy image analyses (TEM) confirmed formation spherical DREAgNPs with particle size range 20-50 nm an average 35 Cu2+ ion adsorption process was studied ions removal efficiency (R. E.) 88.4 % initial concentration 15 ppm. Removal decreases increases. Furthermore, thermodynamic studies that biosorption endothermic positive value ΔG° quite common when ion-exchange mechanism applies biosorption. Positive ΔS◦ suggested increase randomness during Freundlich isotherm has good fit experimental data (R2 =0.99) compared Langmuir = 0.90). This study are available, low cost, effective environment friendlly biosorbent for from aqueous environment.