Year: 2019
Type: article
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.
Source: Nanoscale
DOI: 10.1039/c8nr09547g
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Funders: National Science Foundation, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Eesti Teadusagentuur, Université de Genève, Helmholtz-Zentrum Berlin für Materialien und Energie, European Regional Development Fund, State Education Development Agency Republic of Latvia
OpenAlex ID: W2912939523