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Micro-Raman spectra (laser wavelength = 785 nm; power = 2 μW; spot area = 51 μm2) of MB, GNR@mSiO2-MB, and GNR@Ag@mSiO2 synthesized using different volumes of 0.01 M AgCl solution: (a) 25–5000 μL and (b) 25–500 μL. Change in Raman intensity of δ(C–N–C), ν(C–N), and ν(C–C)ring modes at 450, 1398, and 1625 cm−1 for GNR@Ag@mSiO2-MB synthesized different volumes of 0.01 M AgCl solution: (c) 25–5000 μL and (d) 25–500 μL.
