Jump to main content
Jump to site search

Issue 32, 2017
Previous Article Next Article

Two-step adsorption kinetics of malachite green on anionic polystyrene microspheres in aqueous solution probed by second harmonic generation

Author affiliations

Abstract

Adsorption of organic cations of malachite green (MG) on an anionic microsphere surface was monitored in real time using a surface-specific second-harmonic generation (SHG) technique. This adsorption was found to consist of two processes of different timescales for all MG concentrations, which has not been considered in previous SHG experiments. The two-step adsorption can be well explained by our suggested model, which consists of an initial fast electrostatic alignment of weakly bound MG followed by slow non-electrostatic adsorption of MG on the surface of a microsphere. This study shows the importance of kinetics measurements in providing full understanding of adsorption of charged molecules on colloid surfaces.

Graphical abstract: Two-step adsorption kinetics of malachite green on anionic polystyrene microspheres in aqueous solution probed by second harmonic generation

Back to tab navigation

Supplementary files

Publication details

The article was received on 10 May 2017, accepted on 27 Jul 2017 and first published on 08 Aug 2017


Article type: Paper
DOI: 10.1039/C7CP03088F
Citation: Phys. Chem. Chem. Phys., 2017,19, 21887-21892
  •   Request permissions

    Two-step adsorption kinetics of malachite green on anionic polystyrene microspheres in aqueous solution probed by second harmonic generation

    J. H. Kim, Phys. Chem. Chem. Phys., 2017, 19, 21887
    DOI: 10.1039/C7CP03088F

Search articles by author

Spotlight

Advertisements