Adsorption and protective properties of 5-alkylsulfonyl-3-amino-1,2,4-triazoles on zinc in a neutral chloride solution
https://doi.org/10.61852/2949-3412-2025-3-3-28-37
Abstract
The adsorption, protective and passivating action of substituted triazoles, namely, 5-nonylsulfonyl-3-amino-1,2,4-triazole and 5-propylsulfonyl-3-amino-1,2,4-triazole on the oxidized surface of zinc in a neutral buffer solution was studied. It is shown that 5-nonylsulfonyl-3-amino-1,2,4-triazole anions have higher values of free energy of adsorption0 a ,max( )G on zinc at E = 0.2 V compared to 3-amino-1,2,4-triazole. The values calculated using the complete Temkin isotherm are 83 and 82 kJ/mol for 5-nonylsulfonyl-3-amino-1,2,4-triazole and 5-propylsulfonyl-3-amino-1,2,4-triazole, respectively. Such high values reliably suggest chemisorption interaction of these organic anions with the oxidized zinc surface.
About the Authors
N. P. Andreeva
Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences
Russian Federation
Russian Federation
M. O. Agafonkina
Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences
Russian Federation
Russian Federation
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Review
For citations:
Andreeva N.P., Agafonkina M.O. Adsorption and protective properties of 5-alkylsulfonyl-3-amino-1,2,4-triazoles on zinc in a neutral chloride solution. Title in english. 2025;(3):28-37. (In Russ.) https://doi.org/10.61852/2949-3412-2025-3-3-28-37
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