Résumé:
This study presents a novel microwave-assisted method for the synthesis of silver nanoparticles
(AgNPs) using an endemic plant species from the northern Sahara of Algeria: Euphorbia
guyoniana. The plant, known for its high content of bioactive compounds, was used as both
reducing agent and stabilizing agent in the synthesis process. The effects of microwave power,
irradiation time, extract concentration and silver nitrate concentration on the formation and
properties of AgNPs were investigated and optimized with the use of response surface
methodology (RSM). The synthesized AgNPs were characterized using UV-Vis spectroscopy,
zeta potential (ZP) and dynamic light scattering (DLS). The microwave-assisted synthesis
method demonstrated several advantages, including rapid synthesis, uniform particle size
distribution, and enhanced yield compared to conventional methods. The results of the
statistical analyses carried out attest to the accuracy of the mathematical models proposed by
the RSM and allow us to affirm that they describe well the behavior of the studied system.
