Jump to main content
Jump to site search

Issue 9, 2019
Previous Article Next Article

Visible light to switch-on desorption from goethite

Author affiliations

Abstract

Switching adsorption–desorption by visible light could provide the possibility for a wide range of applications that require controlled release-on-demand. Here, we demonstrate a visible-light controlled desorption behavior in aqueous suspensions for the first time. We observed cationic dye adsorption on amphoteric goethite α-FeOOH in the dark and release during visible light exposure at a pH value slightly over the isoelectric point of goethite. During this process, the dye does not degrade. Desorption is triggered by local heating due to light absorption in narrow band gap goethite, α-FeOOH.

Graphical abstract: Visible light to switch-on desorption from goethite

Back to tab navigation

Supplementary files

Publication details

The article was received on 26 Nov 2018, accepted on 06 Feb 2019 and first published on 06 Feb 2019


Article type: Communication
DOI: 10.1039/C8NR09547G
Nanoscale, 2019,11, 3794-3798
  • Open access: Creative Commons BY license
  •   Request permissions

    Visible light to switch-on desorption from goethite

    A. Šutka, M. Järvekülg, K. A. Gross, M. Kook, T. Käämbre, M. Visnapuu, G. Trefalt and A. Šutka, Nanoscale, 2019, 11, 3794
    DOI: 10.1039/C8NR09547G

    This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements