Adsorption of Water onto Mercaptohexadecanoic Acid Self-Assembled Monolayers Using a Quartz Crystal Microbalance

    Research output: Contribution to journalArticle

    Abstract

    A vacuum quartz crystal microbalance (QCM) apparatus was used to measure water adsorption isotherms on mercaptohexadecanoic acid (HS(CH2)15COOH-MHA) self assembled monolayers (SAMs) on Au coated quartz crystals. Isotherms measured over a temperature range of 20-45 degrees C are consistent with a strong interaction between adsorbed water and the COOH terminated surface of the SAM. From comparisonof our data with calculated BET isotherms we estimate the isosteric heat of adsorption for this system to be ca. 12 kcal/mol.
    Original languageAmerican English
    Pages (from-to)L371-L374
    JournalSurface Science
    Volume355
    DOIs
    StatePublished - 1996

    NREL Publication Number

    • NREL/JA-21638

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