Platinum Nanoflower-Modified Electrode as a Sensitive Sensor for Simultaneous Detection of Lead and Cadmium at Trace Levels

Figure 5

AFM images show the characteristic surface morphology form GCE (a); PtNFs/GCE deposited at the potential of −0.2 V (b); 0.2 V (c).

(a)

(b)

(c)