Akademik Veri Yönetim Sistemi
TURKISH PHYSICAL SOCIETY 38th INTERNATIONAL PHYSICS CONGRESS, Muğla, Türkiye, 31 Ağustos - 04 Eylül 2022, ss.150
We aimed to synthesize and characterize silver nanoparticles (AgNPs) in a Inula Viscosa extract at room temperature and under different reaction conditions by green synthesis method. The green synthesis method has been getting attention in recent years due to its low cost and relatively less release of toxic substances into the environment. Inula Viscosa, reduces the resistance of cancer cells to drugs in cancer treatment. With this feature Inula Viscosa can be preferred in phytotherapy to support chemotherapy. In this study, the extract obtained by soaking the leaves of the Inula Viscosa in ultrapure water at 100 oC for 20 minutes was used to synthesize silver nanoparticles and the synthesis conditions were optimized. After mixing Inula Viscosa extract and different concentrations of silver nitrate solutions, time-dependent formation of silver nanoparticles and the change in particle size is investigated by spectrophotometric measurements in the wavelength range of 350-800 nm. When the absorption spectra of AgNPs is analyzed, it has found that the nanoparticles exhibited a broad surface plasmon resonance at 450 nm, without any shift in the peak position. Also, the particle size has not been changed in this process. These results are supported by Scanning Transmission Electron Microscopy (STEM) measurements for the obtained samples that are taken from the reaction medium at different times. When the STEM images are examined, it was determined that the silver nanoparticles had a spherical morphology with a size of 14±5 nm and there was no change in size and morphology during the nanoparticle formation reaction. The XRD patterns of fabricated silver NPs using three different concentrations of silver nitrate for 24 hours reaction time, clearly indicates that silver nanoparticles are crystallized in Inula Viscosa extract and exhibit face centered cubic structure. Finally, the possible molecular interactions and chemical composition of the samples have been found by Raman and FTIR analysis.