IDEAS home Printed from https://ideas.repec.org/a/wsi/srlxxx/v27y2020i06ns0218625x1950166x.html
   My bibliography  Save this article

Phosphonic Acid Monolayers For Corrosion Protection Of Copper: Eqcm And Eis Investigations

Author

Listed:
  • AYSEL YURT

    (Chemistry Department, Faculty of Arts and Science, Eskişehir Osmangazi University, Eskisehir 26480, Turkey)

  • ESRA SOLMAZ

    (Chemistry Department, Faculty of Arts and Science, Eskişehir Osmangazi University, Eskisehir 26480, Turkey)

Abstract

Preparation, characterization and application of protective phosphonic acid monolayers formed by 1-Aminohexyl phosphonic acid (AHP), 1,4-butanediphosphonic acid (BDPA), 1-amino-1,3-dimethylbutyl phosphonic acid (ADBP) on copper surface as anticorrosive self-assembled molecular monolayers (SAMs) have been investigated by atomic force microscopy (AFM) analysis, electrochemical impedance spectroscopy (EIS) and in situ electrochemical quartz crystal microbalance (EQCM) techniques. Film formation and growth were monitored by EQCM and the step-by-step construction of monolayer was investigated through measurement of the frequency change, which corresponds to mass change due to the adsorption of molecules. Observed increase in electrode mass suggests that SAMs formed on copper surface by the adsorption of phosphonic acids. Results clearly demonstrate that adsorbed amounts of phosphonic acids were strongly influenced by immersion time and molecular structure. Quantum chemical calculations were performed by semi-empirical PM6 method, in order to explain the relationship between molecular structure and adsorption mechanism. Quantum chemical parameters of phosphonic acids propound that adsorption of molecules on copper surface has a chemical mechanism. Corrosion protection ability of SAMs against the acidic corrosion of copper has been evaluated in 0.1M H2SO4 solution. It was found that phosphonic acid SAMs act as protective barrier and the protection efficiencies increased in the following order: AHP/Cu>BDPA/Cu>ADBP/Cu.

Suggested Citation

  • Aysel Yurt & Esra Solmaz, 2020. "Phosphonic Acid Monolayers For Corrosion Protection Of Copper: Eqcm And Eis Investigations," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 27(06), pages 1-16, June.
    • Handle: RePEc:wsi:srlxxx:v:27:y:2020:i:06:n:s0218625x1950166x
    DOI: 10.1142/S0218625X1950166X
    as

    Download full text from publisher

    File URL: http://www.worldscientific.com/doi/abs/10.1142/S0218625X1950166X
    Download Restriction: Access to full text is restricted to subscribers
    File URL: https://libkey.io/10.1142/S0218625X1950166X?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:wsi:srlxxx:v:27:y:2020:i:06:n:s0218625x1950166x. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Tai Tone Lim (email available below). General contact details of provider: http://www.worldscinet.com/srl/srl.shtml .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.