Fabrication of Screen-Printed Electrodes Modified by Hydrothermal MnO₂ Microflowers and Carbon for Electrochemical Sensors in Copper Ions Detection

Figure 3

SWASV responses of the MnO₂/SP-modified SPEs (a) with the different loading mass of MnO₂/SP, (b) with the different contents of SP carbon, and (c) with the different loading mass of Nafion. SWASV responses of the MnO₂/SP-modified SPEs (d) at the different deposition potentials for 180 s and (e) for the different deposition times at the deposition potential of 1 V in 0.1 M NaAc-HAc (pH 5.0) solution containing 10 nM CuSO₄.

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