Gabriela Petcu, Elena Madalina Ciobanu, Gabriela Paun, Elena Neagu, Adriana Baran, Bogdan Trica, Andreea Neacsu, Irina Atkinson, Razvan Bucuresteanu, Alexandra Badaluta, Lia Mara Ditu, Viorica Parvulescu
Ag nanoparticles (AgNPs) were biosynthesized using sage ( Salvia officinalis L.) extract. The obtained nanoparticles were supported on SBA-15 mesoporous silica (S), before and after immobilization of 10% TiO2 (Degussa-P25, STp; commercial rutile, STr; and silica synthesized from Ti butoxide, STb). The formation of AgNPs was confirmed by X-ray diffraction. The plasmon resonance effect, evidenced by UV-Vis spectra, was preserved after immobilization only for the sample supported on STb. The immobilization and dispersion properties of AgNPs on supports were evidenced by TEM microscopy, energy-dispersive X-rays, dynamic light scattering, photoluminescence and FT-IR spectroscopy...
April 3, 2024: International Journal of Molecular Sciences