Research Article

One-Step Hydrothermal Synthesis of N, Fe-Codoped Carbon Dots as Mimic Peroxidase and Application on Hydrogen Peroxide and Glucose Detection

Figure 2

XPS spectrum of the obtained N, Fe-CDs (a). (b), (c) and (d) are the corresponding C 1 s, N 1 s, and O 1 s spectra, respectively.
(a)
(b)
(c)
(d)