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. 2018 Mar 27;8(4):192. doi: 10.3390/nano8040192

Figure 7.

Figure 7

Linear sweep voltammetry (LSV) curves recorded in solutions containing 0.1 M Na2SO4 and nitrate of different concentrations (pH = 2) at two physically stable electrodes: (a) SNWE-1 prepared at 600 °C and (b) SNWE-2 prepared at 400 °C. The scan rate is 40 mV s−1.