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Estakhri, Saba, Darabi, Elham, Akbari Adergani, Behrouz, Elahi, Seyed. (1401). Photoluminescence study of Au-Ag bimetallic nanoparticles supported on mesoporous silica SBA-15. , 16(3), 1-6. doi: 10.30495/jtap.162229
Saba Estakhri; Elham Darabi; Behrouz Akbari Adergani; Seyed Mohammad Elahi. "Photoluminescence study of Au-Ag bimetallic nanoparticles supported on mesoporous silica SBA-15". , 16, 3, 1401, 1-6. doi: 10.30495/jtap.162229
Estakhri, Saba, Darabi, Elham, Akbari Adergani, Behrouz, Elahi, Seyed. (1401). 'Photoluminescence study of Au-Ag bimetallic nanoparticles supported on mesoporous silica SBA-15', , 16(3), pp. 1-6. doi: 10.30495/jtap.162229
Estakhri, Saba, Darabi, Elham, Akbari Adergani, Behrouz, Elahi, Seyed. Photoluminescence study of Au-Ag bimetallic nanoparticles supported on mesoporous silica SBA-15. , 1401; 16(3): 1-6. doi: 10.30495/jtap.162229

Photoluminescence study of Au-Ag bimetallic nanoparticles supported on mesoporous silica SBA-15

Journal of Theoretical and Applied Physics
مقاله 9، دوره 16، شماره 3، آذر 2022، صفحه 1-6  XML اصل مقاله (507.45 K)
نوع مقاله: Scientific Research Manuscript
شناسه دیجیتال (DOI): 10.30495/jtap.162229
نویسندگان
Saba Estakhri1؛ Elham Darabi email orcid 2؛ Behrouz Akbari Adergani3؛ Seyed Mohammad Elahi4
1Plasma physics research center, Science and Research branch, Islamic Azad university, Tehran, Iran
2Plasma physics research center, Science and Research Branch, Islamic Azad University, Tehran, Iran
3Food and Drug Laboratories Research Center, Ministry of Health and Medical Education, Tehran, Iran
4Plasma Physics Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran
چکیده
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.
کلیدواژه‌ها
Bimetallic Au/Ag nanoparticles؛ Mesoporous silica SBA-15؛ Photoluminescence؛ Plasmonic properties
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