کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1234284 1495244 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Surface enhanced Raman scattering (SERS) of silver ions embedded nanocomposite glass
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Surface enhanced Raman scattering (SERS) of silver ions embedded nanocomposite glass
چکیده انگلیسی


• Ag metal ion-exchanged and annealed glasses confirm the presence of nanoclusters.
• Silver nanoclusters were studied by Raman scattering spectroscopy techniques.
• Sizes of Ag-nanoclusters are studied by SPR resonance of UV spectra.
• Depolymerization of the glass network is analyzed by Raman spectra and Raman image.

Silver nanocomposites (Ag-NCs) glasses are formed by the ion exchange technique of dipping the host matrix in the molten metal salt bath. These ions exchanged glasses are then annealed at different temperatures in air for one hour. They exhibit striking linear and nonlinear optical properties with potential applications in the field of photonics materials. The optical absorption spectra of Ag ion exchanged and annealed glasses confirm the presence of the nano sized metal (Ag) cluster embedded inside the glass matrix. The size and morphology of the embedded silver nanoclusters are studied from their surface plasmon resonance (SPR) and surface enhanced Raman spectroscopy (SERS). Post Ag ion exchange made some structural changes in the soda lime glass which can be observed from Raman spectroscopy. It is observed that diffusion process lead to depolymerization of the glass network as it determined by analyzing the various peaks of SERS spectra. Significant enhancement in the Raman signal by these Ag-NCs, prove them as effective SERS substrates.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 124, 24 April 2014, Pages 203–207
نویسندگان
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