Interaction of Two Water Soluble Heterocyclic Hydrazones on Copper in Nitric Acid: Electrochemical, Surface Morphological, and Quantum Chemical Investigations

Figure 7

SEM images of (a) bare metal, (b) Cu in nitric acid (10 h), (c) Cu in the presence of 3APPH (1 mM) for 10 h, and (d) Cu in the presence of 3APTSC (1 mM) for 10 h.

(a)

(b)

(c)

(d)