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Figure 3 | Nanoscale Research Letters

Figure 3

From: Atrazine adsorption removal with nylon6/polypyrrole core-shell nanofibers mat: possible mechanism and characteristics

Figure 3

XPS wide scan and N 1 s regions of PA6 NFM (A,B), PA6/PPy NFM (C,D). The surface chemical compositions of PA6 nanofibers and PA6/PPy NFM were detected with X-ray photoelectron spectroscopy (XPS; ESCALAB 250Xi). The high-resolution N 1 s region of PA6 NFM showed there is an intense peak due to neutral amine nitrogen (−NH-) from the PA6 chains. When the pyrrole unit is doped, the main component of N 1 s peak shifts corresponding to the pyrrole nitrogen (−NH-). Besides, the peaks of imine nitrogen (=N-) and positively charged nitrogen atoms (N+) appears.

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