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Abstract
The interaction of benzotriazole (BTAH) with Cu(100) has been studied as
a function of BTAH exposure in a joint experimental and theoretical
effort. Scanning tunnelling microscopy (STM), X-ray photoelectron
spectroscopy (XPS), high resolution electron energy loss spectroscopy
(HREELS) and density functional theory (DFT) calculations have been
combined to elucidate the structural and chemical characteristics of
this system. BTAH is found to deprotonate upon adsorption on the copper
surface and to adopt an orientation that depends on the molecular
coverage. Benzotriazolate (BTA) species initially lie with their planes
parallel to the substrate but, at a higher molecular coverage, a
transition occurs to an upright adsorption geometry. Upon increasing the
BTAH exposure, different phases of vertically aligned BTAs are observed
with increasing molecular densities until a final, self-limiting
monolayer is developed. Both theory and experiment agree in identifying
CuBTA and Cu(BTA)2 metal-organic complexes as the fundamental
building blocks of this monolayer. This work shows several similarities
with the results of previous studies on the interaction of
benzotriazole with other low Miller index copper surfaces, thereby
ideally completing and concluding them. The overall emerging picture
constitutes an important starting point for understanding the mechanism
for protection of copper from corrosion.
Original language | English |
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Article number | 110589 |
Number of pages | 10 |
Journal | Corrosion Science |
Volume | 207 |
Early online date | 18 Aug 2022 |
DOIs | |
Publication status | Published - Oct 2022 |
Keywords
- Corrosion inhibitors
- Copper
- STM
- XPS
- HREELS
- DFT
Fingerprint
Dive into the research topics of 'Adsorption of the prototypical organic corrosion inhibitor benzotriazole on the Cu(100) surface'. Together they form a unique fingerprint.Projects
- 1 Finished
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N-heterocyclic Carbenes: N-heterocyclic Carbenes on Metal Surfaces - towards applications in corrosion inhibition and catalysis
Baddeley, C. J. (PI)
1/07/19 → 31/12/22
Project: Standard
Datasets
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Adsorption of the prototypical organic corrosion inhibitor benzotriazole on the Cu(100) surface (dataset)
Grillo, F. (Creator), Richardson, N. V. (Creator) & Baddeley, C. J. (Creator), University of St Andrews, 19 Aug 2022
DOI: 10.17630/93ee08b5-7ebd-4c3a-9a5b-b191d1839a4b
Dataset
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