Scientific article
OA Policy
English

Visible light to switch-on desorption from goethite

Published inNanoscale, vol. 11, no. 9, p. 3794-3798
Publication date2019
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.

Citation (ISO format)
ŠUTKA, Anna et al. Visible light to switch-on desorption from goethite. In: Nanoscale, 2019, vol. 11, n° 9, p. 3794–3798. doi: 10.1039/C8NR09547G
Main files (1)
Article (Published version)
Identifiers
Additional URL for this publicationhttp://xlink.rsc.org/?DOI=C8NR09547G
Journal ISSN2040-3372
565views
152downloads

Technical informations

Creation08/03/2019 13:38:00
First validation08/03/2019 13:38:00
Update time15/03/2023 15:50:18
Status update15/03/2023 15:50:18
Last indexation31/10/2024 12:54:23
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack