Fig. 1
From: Fe-doped carbon dots: a novel biocompatible nanoplatform for multi-level cancer therapy
Characterization of Fe-CDs. a TEM images of Fe-CDs, insets show the size distribution histogram and the HR-TEM image. b PL spectra of Fe-CDs solution under different excitation wavelengths. c UV–Vis absorption spectra, the maximum excitation and emission PL spectra of Fe-CDs. d FT-IR spectrum of Fe-CDs. e XRD pattern of Fe-CDs. f XPS full spectra of Fe-CDs. g XPS deconvoluted Fe 2p spectra. h XPS deconvoluted C 1 s spectra, i XPS deconvoluted O 1 s spectra