Time-resolved studies on the formation of maghemite nanoparticles combining fast-XANES and SAXS
- Iron oxide nanoparticles find application in different areas like sensing, magnetic storage media, and biomedicine, due to their magnetic properties and environment-friendliness. In the present contribution, we report on the in situ investigation of an iron oxide nanoparticle synthesis by coupled X-ray absorption near-edge structure (XANES) and small-angle X-ray scattering (SAXS). The combination provides simultaneously information about the size of particles (SAXS) and on the oxidation state and the local structure of the iron atoms (XANES). The co-precipitation synthesis was exemplary studied, using a stabilization agent to decelerate the fast precipitation of the iron oxides. This allows to detect intermediates in situ. The measurements were performed using a custom-made acoustic levitator as sample holder. From the data, a mechanism was derived indicating different phases of particle Formation and oxidation state changes.
Autor*innen: | Anke Kabelitz |
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Koautor*innen: | Ana de Oliveira Guilherme Buzanich, Uwe Reinholz, Martin Radtke, Ralf Bienert, K. Schulz, R. Kraehnert, Franziska Emmerling |
Dokumenttyp: | Posterpräsentation |
Veröffentlichungsform: | Präsentation |
Sprache: | Englisch |
Jahr der Erstveröffentlichung: | 2016 |
DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten |
Freie Schlagwörter: | Iron oxide nanoparticles; SAXS; Time-resolved; XANES |
Veranstaltung: | The European Materials Research Society-Spring Meeting 2016 |
Veranstaltungsort: | Lille, France |
Beginndatum der Veranstaltung: | 01.05.2016 |
Enddatum der Veranstaltung: | 06.05.2016 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 06.06.2016 |
Referierte Publikation: | Nein |