Cation bridging studied by specular neutron reflection

Xiaofan Wang, Seung Yeon Lee, Kathryn Miller, Rebecca Welbourn, Isabella Stocker, Stuart Clarke, Michael Casford, Philipp Gutfreund, Maximilian W.A. Skoda

Research output: Contribution to journalArticlepeer-review

59 Scopus citations

Abstract

The binding of an anionic surfactant onto an anionic surface by addition of divalent ions is reported based on experimental data from specular neutron reflection (NR) and attenuated total internal reflection IR spectroscopy (ATR-IR). Similar measurements using monovalent ions (sodium) do not show any evidence of such adsorption, even though the amount of surfactant can be much higher. This data is interpreted in terms of the so-called bridging mechanism of ion binding.

Original languageEnglish
Pages (from-to)5520-5527
Number of pages8
JournalLangmuir
Volume29
Issue number18
DOIs
StatePublished - May 7 2013
Externally publishedYes

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