Fig. 16

AFM images of the carbon steel surface a before immersion in 1.0 M HCl, b after 24 h of immersion in 1.0 M HCl, c after 24 h of immersion in 1.0MHCl + 5 × 10−5 M diolefinic dye, and d after 24 h of immersion in 1.0 M HCl + 20 × 10−5 M diolefinic dye in the presence of 0.01 M AgNPs at 298 K