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(a) Cyclic voltammograms of arsenopyrite treated in the control and by Al-based CME: (a-1) anodic sweep from OCP to +1.0 V, (a-2) cathodic sweep from +1.0 to –0.6 V, and (a-3) anodic sweep from –0.6 V to OCP. The chronoamperometric response of arsenopyrite treated in the control and by Al-based CME: (b) anodic polarization at an applied potential of +0.8 V, and (c) cathodic polarization at an applied potential of 0.0 V. Note that arrows in Figure 4a denote the sweep direction.
