Einert, Marcus ; Hartmann, Pascal ; Smarsly, Bernd ; Brezesinski, Torsten (2022)
Quasi-homogenous photocatalysis of quantum-sized Fe-doped TiO₂ in optically transparent aqueous dispersions.
In: Scientific Reports, 2022, 11
doi: 10.26083/tuprints-00021247
Artikel, Zweitveröffentlichung, Verlagsversion
Kurzbeschreibung (Abstract)
In this study, the preparation of anatase TiO₂ nanocrystals via a facile non-aqueous sol–gel route and their characterization are reported. The 3–4 nm particles are readily dispersable in aqueous media and show excellent photoreactivity in terms of rhodamine B degradation. The catalytic performance can be further increased considerably by doping with iron and UV-light irradiation as a pre-treatment. The effect of surface ligands (blocked adsorption sites, surface defects etc.) on the photoreactivity was thoroughly probed using thermogravimetric analysis combined with mass spectrometry. Photoelectrochemical characterization of thin-film electrodes made from the same TiO₂ nanocrystals showed the opposite trend to the catalytic experiments, that is, a strong decrease in photocurrent and quantum efficiency upon doping due to introduction of shallow defect states.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Einert, Marcus ; Hartmann, Pascal ; Smarsly, Bernd ; Brezesinski, Torsten |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Quasi-homogenous photocatalysis of quantum-sized Fe-doped TiO₂ in optically transparent aqueous dispersions |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Publikationsdatum der Erstveröffentlichung: | 2022 |
| Verlag: | Springer Nature |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Scientific Reports |
| Jahrgang/Volume einer Zeitschrift: | 11 |
| Kollation: | 10 Seiten |
| DOI: | 10.26083/tuprints-00021247 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/21247 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung aus gefördertem Golden Open Access |
| Kurzbeschreibung (Abstract): | In this study, the preparation of anatase TiO₂ nanocrystals via a facile non-aqueous sol–gel route and their characterization are reported. The 3–4 nm particles are readily dispersable in aqueous media and show excellent photoreactivity in terms of rhodamine B degradation. The catalytic performance can be further increased considerably by doping with iron and UV-light irradiation as a pre-treatment. The effect of surface ligands (blocked adsorption sites, surface defects etc.) on the photoreactivity was thoroughly probed using thermogravimetric analysis combined with mass spectrometry. Photoelectrochemical characterization of thin-film electrodes made from the same TiO₂ nanocrystals showed the opposite trend to the catalytic experiments, that is, a strong decrease in photocurrent and quantum efficiency upon doping due to introduction of shallow defect states. |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-212479 |
| Zusätzliche Informationen: | The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request. |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 600 Technik, Medizin, angewandte Wissenschaften > 600 Technik 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Oberflächenforschung |
| Hinterlegungsdatum: | 06 Mai 2022 12:03 |
| Letzte Änderung: | 09 Mai 2022 06:28 |
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