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Figure 2: Cyclic Voltammograms of Thionine at montmorillonite modified electrode with scan rates (a) [112] 5, 10, 20, 40, 60, 100, 150, 200, 250, 300, 400 and 500 mV·s−1 and (b) representative cycling with scan rate 100 mV·s−1 in presence of 0.1 M H2SO4.