Fig. 5
The suggested sensor’s surface (electrode no. 3) is shown in the SEM image (a) before and (b) after soaking in Cu(II) ion (1.0 × 10−3 mol L−1) for one hour at 25 °C.
Fig. 5 | Scientific Reports
The suggested sensor’s surface (electrode no. 3) is shown in the SEM image (a) before and (b) after soaking in Cu(II) ion (1.0 × 10−3 mol L−1) for one hour at 25 °C.
