Facile Fabrication of CuO Nanoparticles Embedded in N-Doped Carbon Nanostructure for Electrochemical Sensing of Dopamine

Figure 3

XPS spectra of CuO@NDC: (a) Survey scan, (b) C 1s spectra, (c) N 1s spectra, (d) Cu 2p spectra, and (e) O 1s spectra.

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(b)

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(d)

(e)