Fig. 2.
Physicochemical structure characterizations. (A) FTIR analysis of precursors and FPCP hydrogel; (B) UV–vis spectra of PPy@PDA; (C) TEM images of PPy, PPy@PDA, FPC and FPCP hydrogel; (D) SEM images of FPCP hydrogel, FPC, FC and FCHO.
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