“…In the nitrogen spectra of ACNTP/NC-2, the peaks at 403.2, 400.8, 399.9 and 398.5 eV are associated with oxidized nitrogen (N1), quaternary nitrogen (N2), pyrrolic nitrogen (N3), and pyridinic nitrogen (N4) (Figure 3c). 42 In the O 1s spectra of ACNTP/NC-2, the peaks at 533.8 and 532.4 eV correspond to C=O and C-OH bonds (Figure 3d), respectively [54]. Similar results for the carbon, nitrogen, and 12 / 41 oxygen bonding in ACNTP/NC-1 and ACNTP/NC-3 are shown in Figure S4.…”