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(A) The scanning electron microscope image of nPANI. Scale bar is 500 nm. (B) UV-vis absorption spectra of nPANI aqueous solutions at pH 2.0, pH 7.0, and pH 12.0. Ultra DI-water was used as a background solution. (C) FTIR spectrum of nPANI. KBr was used as a background.
