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Quasi-homogenous photocatalysis of quantum-sized Fe-doped TiO₂ in optically transparent aqueous dispersions

Einert, Marcus ; Hartmann, Pascal ; Smarsly, Bernd ; Brezesinski, Torsten (2022):
Quasi-homogenous photocatalysis of quantum-sized Fe-doped TiO₂ in optically transparent aqueous dispersions. (Publisher's Version)
In: Scientific Reports, 11, Springer Nature, e-ISSN 2045-2322,
DOI: 10.26083/tuprints-00021247,
[Article]

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Item Type: Article
Origin: Secondary publication via sponsored Golden Open Access
Status: Publisher's Version
Title: Quasi-homogenous photocatalysis of quantum-sized Fe-doped TiO₂ in optically transparent aqueous dispersions
Language: English
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.

Journal or Publication Title: Scientific Reports
Volume of the journal: 11
Place of Publication: Darmstadt
Publisher: Springer Nature
Collation: 10 Seiten
Classification DDC: 600 Technik, Medizin, angewandte Wissenschaften > 600 Technik
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Surface Science
Date Deposited: 06 May 2022 12:03
Last Modified: 23 Aug 2022 11:13
DOI: 10.26083/tuprints-00021247
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-212479
Additional Information:

The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/21247
PPN: PPN 494614498
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