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Rare earth ions doped ZnO: synthesis, characterization and preliminary photoactivity assessment

Cerrato, Erik, Gionco, Chiara, Berruti, Ilaria, Sordello, Fabrizio, Calza, Paola and Paganini, Maria Cristina 2018. Rare earth ions doped ZnO: synthesis, characterization and preliminary photoactivity assessment. Journal of Solid State Chemistry 264 , pp. 42-47. 10.1016/j.jssc.2018.05.001

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Abstract

This work reports the effect of doping zinc oxide with lanthanide ions on structural, EPR and UV visible properties. Bare and doped samples were synthesized using the simple and green hydrothermal process. Different rare earth ions (RE = La, Ce, Pr, Er and Yb) with 1% molar ratio RE/Zn were used. The samples have been studied using X Ray Diffraction, Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) and UV visible diffuse reflectance spectroscopy. Finally, electron paramagnetic resonance (EPR) spectroscopy, was used to assess the materials photoactivity under UV irradiation, both in solid state, to see the charge carriers’ generation and in solution, evaluating the OH• radical formation using the DMPO (5,5-Dimethyl-1-Pyrroline-N-Oxide) spin trapping technique. The results suggest that the synthesized materials could be interesting systems for the photocatalytic abatement of emerging organic persistent pollutants in wastewater treatment plants.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Publisher: Elsevier
ISSN: 0022-4596
Date of Acceptance: 3 May 2018
Last Modified: 20 Oct 2021 01:14
URI: http://orca.cardiff.ac.uk/id/eprint/138212

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