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. 2017 Sep 2;12:518. doi: 10.1186/s11671-017-2286-3

Fig. 2.

Fig. 2

FT-IR spectra of (a) 30 μL PPy-coated urchin-like MnO2 sample and (b) 50 μL PPy-coated caddice-clew-like MnO2 sample and pure PPy