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Fig. 2 | Nanoscale Research Letters

Fig. 2

From: Synthesis of Polyaniline Coating on the Modified Fiber Ball and Application for Cr(VI) Removal

Fig. 2

a SEM image of PANI/m-FB composites after reaction with Cr(VI) (insert picture: corresponding element mappings); b Cr 2p XPS spectrum of PANI/m-FB after reaction with Cr(VI), where Cr 2p1/2 corresponds to Cr(VI), and Cr 2p3/2 relates to Cr(III) (T = 303 K, C0 = 10 mg L−1, pH = 5.0); effect of pH value on c remanent concentration and d removal capacity of Cr(VI). (T = 303 K, C0 = 10 mg L−1); and the relation of the concentration of different Cr(VI) forms and the pH value of solution; e before adding PANI/m-FB composites; and f after adding PANI/m-FB composites; g Cr 2p XPS spectra of composites after reaction with Cr(VI) solution with different pH values (Curve 1: pH = 1.0; Curve 2: pH = 5.0; Curve 3: pH = 11.0)

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