On the Role of Benzotriazole in Passivating Copper Surfaces (Lectures/Talks)
Federico Grillo, Ph.D.
EaStCHEM and School of Chemistry, University of St. Andrews (UK)
Benzotriazole (BTAH) has been used as a copper corrosion inhibitor since the 1950s. Several adsorption models have been proposed, however the details of how adsorption and surface passivation occur remain a matter of debate. From the onset of adsorption, to saturation coverage and beyond, BTAH interaction with copper surfaces has been investigated under ultra-high vacuum conditions via vibrational spectroscopy (RAIRS, HREELS) and STM, with support from DFT calculations. The selectivity of BTAH for copper is further investigated onto a copper-doped Au(111) surface. This study may contribute to understanding further the interaction between BTAH and Cu, and in turn the mechanism for surface passivation.