Synthesis of SiO 2 @Ag Nanocomposite for Investigating Metal-Enhanced Fluorescence and Surface-Enhanced Raman Spectroscopy.

Autor: Thai DV; Institute of Theoretical and Applied Research, Duy Tan University, Hanoi, 100000, Vietnam.; Faculty of Environmental and Chemical Engineering, Duy Tan University, Da Nang, 550000, Vietnam., Pham VB; VNU University of Science, Vietnam National University - Hanoi, Hanoi, 100000, Vietnam., Sai CD; VNU University of Science, Vietnam National University - Hanoi, Hanoi, 100000, Vietnam., Nguyen THG; VNU University of Science, Vietnam National University - Hanoi, Hanoi, 100000, Vietnam., Tran TD; VNU University of Science, Vietnam National University - Hanoi, Hanoi, 100000, Vietnam., Tran TH; Hanoi University of Mining and Geology, 18 Pho Vien, Bac Tu Liem, Hanoi, Vietnam., Nguyen TT; Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Vietnam., Nguyen TD; Institute of Theoretical and Applied Research, Duy Tan University, Hanoi, 100000, Vietnam.; Faculty of Natural Sciences, Duy Tan University, Da Nang, 550000, Vietnam., Bui HV; VNU University of Science, Vietnam National University - Hanoi, Hanoi, 100000, Vietnam. buihongvan@hus.edu.vn.
Jazyk: angličtina
Zdroj: Journal of fluorescence [J Fluoresc] 2024 Jan 27. Date of Electronic Publication: 2024 Jan 27.
DOI: 10.1007/s10895-024-03584-1
Abstrakt: SiO 2 @Ag nanocomposite (NC) has been synthesized by the chemical reduction and Stӧber method for Metal-enhanced fluorescence (MEF) of Rhodmine 6G (R6G) and Surface-enhanced Raman spectroscopy (SERS) of Malachite green (MG). As-synthesized SiO 2 @Ag NC indicated SiO 2 nanosphere (NS) and Ag nanoparticle (NP) morphologies. The SiO 2 @Ag NC was high quality with a well-defined crystallite phase with average sizes of 24 nm and 132 nm for Ag NP and SiO 2 NC, respectively. By using SiO 2 @Ag NC, the photoluminescence (PL) intensity of the R6G (at 59.17 ppm) was increased approximately 133 times. The SERS of the MG (at 1.0 ppm) with SiO 2 @Ag NC as substrate clearly observed vibrational modes in MG dye at 798, 916, 1172, 1394, and 1616 cm -1 . As a result, the SERS enhancement factor (EF SERS ) at 1172 cm -1 obtained 6.3 × 10 6 . This initial study points to the potential of SiO 2 @Ag NC as a promising material for MEF and SERS substrates to detect dyes at low concentrations.
(© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
Databáze: MEDLINE
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