SYNTHESIS OF BIMETALLIC NANOPARTICLES URCHIN-LIKE WITH RICINUS COMMUNIS LEAF EXTRACT

摘要

These green methods are low cost, fast, efficient and generally lead to the formation of crystalline nanoparticles with a variety of shapes (spheres, rods, prisms, plates, needles, leafs or dendrites), with sizes between 1 and 100 nm. These features mainly depend on the process parameters, such as the nature of extract, concentrations of the reactants, pH, temperature, and time of reaction. This work shows obtaining bimetallic nanoparticles urchin-like using extract from Ricinus communis (Family Euphorbiaceae). In these work, the extract were characterized with FTIR analysis indicated the involvement of amine (-NH), hydroxyl (-OH) and carboxyl (-C= O) functional groups. The formation of nanoparticles were characterized using UV-visible absorption spectroscopy gave surface plasmon resonance between 425 and 445 nm this reveals the reduction of silver ions (Ag+) to silver (Ag~0) and scanning electron microscopy (SEM-EDS) for the morphology. The nanoparticle obtained by this extract presents urchin-like formations with nanometer peaks.