fig4
Figure 4. (A) XPS spectra of the as-synthesized samples; High-resolution energy spectra of Cu 2p of (B) CuO and (C) CuO-PANI-2; O 1s spectrum of (D) CuO and (E) CuO-PANI-2; (F) N 1s spectrum of CuO-PANI-2. XPS: X-ray photoelectron spectrometer; PANI: polyaniline.
