Fig. 2. (A) The FE-SEM images and (B) the TEM images of the TiO2, CN/TO and rGO/CN/TO nanocoatings; XPS spectra with peak fitting analysis for (C) Ti 2p, (D) O 1s, (E) C 1s, and (F) N 1s of the as-prepared nanocoatings.
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