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9. Adsorption of 2-Mercaptobenzothiazole Organic Inhibitor and its Effects on Copper Anodic Oxidation in Alkaline Environment

Author

Garg, Vishant, Zanna, Sandrine, Seyeux, Antoine, Wiame, Frédéric, Maurice, Vincent, Marcus, Philippe, Institut de Recherche de Chimie Paris (IRCP), Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture (MC), and European Project: 741123,CIMNAS

Subjects
Surface analysis, XPS, Corrosion inhibition, ToF-SIMS, [CHIM.OTHE]Chemical Sciences/Other, 2-Mercaptobenzothiazole, Copper
Abstract

International audience; The adsorption of 2-MBT organic inhibitor on copper and its effects on anodic oxide growth in NaOH were investigated using cyclic voltammetry, X-ray photoelectron spectroscopy, and time-of-flight secondary ion mass spectrometry techniques. It is shown that 2-MBT significantly impedes the growth of the Cu(I) oxide by forming a multilayered organic film on the surface. A major factor influencing the formation and properties of the organic barrier layer is the presence and structure of the interfacial native oxide on which it forms. The 2-MBT multilayer bonds to the metallic copper substrate mostly via its sulphur atoms along with a small fraction of the nitrogen atoms also bonding to the metallic substrate. Additionally, there is an interaction between the inhibitor molecules and copper released from the surface to form metal-organic complexes in the outer layers of the thicker films.

Published
2023

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