Figure 2.
TEM images and EDX of (A, C) dSiO2, (B, D) CDs@dSiO2; (E) FTIR spectra of dSiO2 NPs, CDs, CDs@dSiO2 NPs, respectively, and (F) UV–vis absorption spectrum and fluorescence spectrum of (a, c) CDs, and (b, d) CDs@dSiO2 NPs.
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