Adsorption of Depocolin and Dimegin on Nickel from Neutral Aqueous Solutions
| Autor: | N. P. Andreeva, Yu. I. Kuznetsov, M. O. Agafonkina, O.Yu. Grafov, L. P. Kazanskii |
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| Rok vydání: | 2019 |
| Předmět: |
Aqueous solution
Chemistry 020209 energy Organic Chemistry Inorganic chemistry Metals and Alloys chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Ring (chemistry) Electrochemistry Porphyrin Surfaces Coatings and Films chemistry.chemical_compound Nickel Adsorption X-ray photoelectron spectroscopy polycyclic compounds 0202 electrical engineering electronic engineering information engineering Materials Chemistry Molecule 0210 nano-technology |
| Zdroj: | Protection of Metals and Physical Chemistry of Surfaces. 55:1304-1310 |
| ISSN: | 2070-206X 2070-2051 |
| DOI: | 10.1134/s2070205119070074 |
| Popis: | Electrochemical and adsorption behavior of porphyrin derivatives—dimegin and depocolin—on the surface of nickel from aqueous borate buffer solution with рН 7.4 have been studied. Both porphyrins shifted the pitting formation potential positively. According to the ellipsometric and XPS data, the porphyrins’ adsorption layer thicknesses were nearly equal and amounted to 0.6–0.8 nm, which corresponded to the molecule position at an angle of ~45° to the surface. Molecules are bound to the nickel surface by the oxygen atoms of carboxyl groups, whereas the porphyrin ring was not involved in the bond formation with nickel. |
| Databáze: | OpenAIRE |
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