EC-STM study of 5-mercapto-1-phenyl-tetrazole adsorption on Cu(1 1 1)

E. Szocs, I. Bakó, T. Kosztolányi, I. Bertóti, E. Kálmán

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The adsorption of 5-mercapto-1-phenyl-tetrazole (5-PhTT) inhibitor on Cu(111) electrode surface was studied in sulfuric acid solution by using surface sensitive techniques (potentiodynamic scanning tunneling microscopy (EC-STM), X-ray photoelectron spectroscopy (XPS), Auger electron spectroscopy (AES)). The composition of the protective layer was subsequently analyzed by Auger electron spectroscopy and X-ray photoelectron spectroscopy. Using the so-called potentiodynamic scanning tunneling microscopy mode, it was possible to follow the inhibitor film formation. In the double-layer potential region, the high-resolution STM imaging reveals details of the adsorbed layer and the molecular structure of individual molecules. Our in situ STM results were combined with quantum chemical calculations, which gave information about 5-MPhTT molecule size and symmetry. The results were analyzed and discussed.

Original languageEnglish
Pages (from-to)1371-1378
Number of pages8
JournalElectrochimica Acta
Volume49
Issue number9-10
DOIs
Publication statusPublished - Apr 15 2004

Fingerprint

Scanning tunneling microscopy
Auger electron spectroscopy
X ray photoelectron spectroscopy
Adsorption
Molecules
Sulfuric acid
Molecular structure
Imaging techniques
Electrodes
Chemical analysis
1H-tetrazole
sulfuric acid

Keywords

  • 5-Mercapto-1-phenyl-tetrazole inhibitor
  • Copper
  • EC-STM
  • Quantum chemical calculations
  • XPS

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Analytical Chemistry
  • Electrochemistry

Cite this

EC-STM study of 5-mercapto-1-phenyl-tetrazole adsorption on Cu(1 1 1). / Szocs, E.; Bakó, I.; Kosztolányi, T.; Bertóti, I.; Kálmán, E.

In: Electrochimica Acta, Vol. 49, No. 9-10, 15.04.2004, p. 1371-1378.

Research output: Contribution to journalArticle

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