The influence of benzotriazole on electrochemical behavior of copper in borax buffer solutions, in pH range 8.0-12.3, with or without 0.05 M NaCl chlorides, was studied. Two methods were used in order to examine the effect of BTA: a) the Cu electrode was immersed for various time periods (5, 15 and 60 min) in 0.2 % BTA solution, before the polarization conducted in borax buffers and b) various concentrations of BTA (6.72·10-4 M, 6.72·10-5 M and 3.36·10-5 M) were added to borax buffers before measurements. In both cases, BTA was found to manifest significant protective properties, but better effect was accomplished by pretreatment. The adsorption of BTA on the copper surface obays the Langmuir’s adsorption isotherm.
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Antonijević et al. (2009) studied this question.
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