Role of environment on release kinetics of intercalated MoO_4~(2-) inhibitor from Zn_2AI/- layered double hydroxides

摘要

Layer double hydroxide (LDH) materials attract a lot of attention as a promising reservoir to host corrosion inhibition agents instead of placing the inhibitors directly into a polymer matrix. Despite an obvious advantage of this methodology providing an instrument for controlling the release kinetics, the experimental studies of the inhibitor release kinetics from the host LDH systems are rare. The effects of solution composition on the release kinetics are even more unknown. In this work for the first time the effects of solution composition on the release kinetics of the intercalated MoO_4~(2-) ions from the Zn_2AI(OH)_6(MoO_4)_(0.5) (Zn_2AI/Mo-LDH) and on the reactivity of hot dip galvanized steel (HDG) was studied using the solution analysis by inductively couple plasma atomic emission spectrometry.