Inhibition action and adsorption behavior of environment-friendly inhibitor poly-aspartate on copper
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The inhibition action and adsorption behavior of an environment-friendly inhibitor poly-aspartate (PASP) on copper in aqueous NaCl (0.02%) solution were investigated by means of electrochemical techniques. The results indicated that the best inhibition efficiency of PASP was 78.3% with the concentration of 15 mg center dot L-1 at 20 degrees C. The adsorption of PASP prevented Cu from being corroded and PASP was an anodic inhibitor. The inhibition efficiency of PASP decreased with the increase in solution temperature, it decreased to 40.4% at 50 degrees C. The adsorption behavior of PASP followed Langmuir isotherm, it was spontaneous and exothermic, and belonged to chemical adsorption.
出处ACTA PHYSICO-CHIMICA SINICA，2008,24(9):1724-1728