Effect of zirconium-based conversion treatments of zinc, aluminium and magnesium on the chemisorption of ester-functionalized molecules

L. I. Fockaert, S. Pletincx, B. Boelen, T. Hauffman, H. Terryn, J. M.C. Mol*

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    4 Citations (Scopus)
    72 Downloads (Pure)

    Abstract

    The effect of zirconium-based conversion of thermally vaporized zinc, aluminium and magnesium on the chemisorption of dimethylsuccinate was studied using attenuated total reflection – Fourier transform infrared spectroscopy (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) analysis. Two competing chemisorption mechanisms contribute to interfacial bond formation. Hydrogen interactions on one hand were shown to occur between metal hydroxides and non-hydrolysed ester-groups of the molecule. On the other hand, both native and zirconium-treated substrates were shown to form interfacial carboxylate bonds with dimethylsuccinate, evidencing their capability of hydrolysing ester groups towards more reactive acid groups. Both interactions were shown to correlate to the metal oxide acid-base properties.

    Original languageEnglish
    Article number145199
    Number of pages11
    JournalApplied Surface Science
    Volume508
    DOIs
    Publication statusPublished - 2020

    Keywords

    • ATR-FTIR Kretschmann
    • Esters
    • Metal-molecule interaction
    • XPS
    • Zr-based conversion

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