@article{Estakhri_Darabi_Akbari-Adergani_Elahi_2023, title={Photoluminescence study of Au-Ag bimetallic nanoparticles supported on mesoporous silica SBA-15}, volume={16}, url={https://oiccpress.com/journal-of-theoretical-and-applied-physics/article/photoluminescence-study-of-au-ag-bimetallic-nanoparticles-supported-on-mesoporous-silica-sba-15/}, DOI={10.30495/JTAP.162229}, abstractNote={Bimetallic Au-Ag nanoparticles with homogeneous dispersion in amine-modified SBA-15 mesoporous silica channels were successfully synthesized by the post-modification method. The obtained nanocomposites with different component ratios were studied by structural, Physico-chemical, and optical analysis. The structural and Physico-chemical properties were studied by X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, and nitrogen adsorption-desorption isotherm measurement (BET). The optical properties were characterized by photoluminescence (PL) and UV-Vis spectroscopy. The photoluminescence and absorption spectra were strongly affected by the change in the compositional ratio of gold to silver nanoparticles due to the interactions of Au-Ag nanoparticles, the configuration of conduction electrons and their plasmonic properties. A significant enhancement was observed in the photoluminescence spectrum in the long-wavelength red emission at 640 nm for a one-to-one composition ratio of Au/Ag/SBA-15 nanocomposite. Since the light emission of most microorganisms is in the visible range, the nanocomposite produced can be proposed for applications in biosensor technology.}, number={3}, journal={Journal of Theoretical and Applied Physics}, publisher={OICC Press}, author={Estakhri, Saba and Darabi, Elham and Akbari-Adergani, Behrouz and Elahi, Seyed Mohammad}, year={2023}, month={Nov.}, keywords={Photoluminescence, Bimetallic Au/Ag nanoparticles, Mesoporous silica SBA-15} }