Microwave assisted green synthesis of silver nanoparticles using Trigonella Hamosa L.plant extract for the photodegradation of some water pollutants.

Biological techniques are regarded as more sustainable to synthesize nanoparticles compared to physical and chemical ones due to their environmentally friendly characteristics and cost efficiency. In this research, silver nanoparticles (AgNPs) were synthesized using aqueous extracts of Trigonella hamosa Leave via conventional and microwave-assisted methods. The leaf extract of Trigonella hamosa L. was effectively employed as both a reducing and stabilizing agent in the preparation of AgNPs. Microwave-assisted synthesis of AgNPs shows average size of crystal (14 nm) less than that obtained without microwave (16 nm). The prepared AgNPs was characterized using XRD, FTIR, HR-TEM, and UV-vis. The UV-visible spectrophotometer identified the formation of AgNPs by observing the surface plasmon resonance absorption (SPR) band peak at approximately 430 nm. The HR-TEM and XRD studies show that the AgNPs particles have an average diameter of 14 nm and are nearly spherical, as indicated by the TEM. Synthesized AgNPs have been successfully used as a catalyst for photodegradation of methylene blue dye (MB) and paracetamol under sunlight and/or visible lamp irradiation. The MB dye experienced degradation rates of 96.2 and 94.9%, whereas paracetamol showed degradation percentages of 94.5 and 92% when subjected to sunlight and visible lamp irradiation, respectively. The results of this research indicate that AgNPs may serve as a viable alternative for the effective and safe elimination of hazardous organic pollutants.