In this work, nanostructured rare-earth-doped zirconia was successfully synthesized, through a simple hydrothermal method, with a rare-earth oxide (REO)-based content varying from 0.5 to 5% molar (REO = CeO2; Er2O3). The samples were characterized by using several techniques, such as X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, diffuse reflectance spectroscopy. The photoactivity of the samples was tested under irradiation with simulated solar light by both the spin trapping technique, using DMPO (5,5-dimethyl-1-pyrroline-N-oxide) as spin trapping agent, and by the photodegradation of Rhodamine B, a common textile dye. All the doped samples resulted more active than the bare zirconia, and the correlation between the physical-chemical properties and the photoactivity of the materials has been investigated. (C) 2018 Elsevier B.V. All rights reserved.

Synthesis and characterization of Ce and Er doped {ZrO}2 nanoparticles as solar light driven photocatalysts / Gionco, Chiara; Hern('(a))ndez, Simelys; Castellino, Micaela; Ahmed Gadhi, Tanveer; Alejandro Mu(~(n))oz-Tabares, Jos('(e)); Cerrato, Erik; Tagliaferro, Alberto; Russo, Nunzio; Cristina Paganini, Maria. - In: JOURNAL OF ALLOYS AND COMPOUNDS. - ISSN 0925-8388. - 775:(2019), pp. 896-904. [10.1016/j.jallcom.2018.10.046]

Synthesis and characterization of Ce and Er doped {ZrO}2 nanoparticles as solar light driven photocatalysts

Chiara Gionco;
2019

Abstract

In this work, nanostructured rare-earth-doped zirconia was successfully synthesized, through a simple hydrothermal method, with a rare-earth oxide (REO)-based content varying from 0.5 to 5% molar (REO = CeO2; Er2O3). The samples were characterized by using several techniques, such as X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, diffuse reflectance spectroscopy. The photoactivity of the samples was tested under irradiation with simulated solar light by both the spin trapping technique, using DMPO (5,5-dimethyl-1-pyrroline-N-oxide) as spin trapping agent, and by the photodegradation of Rhodamine B, a common textile dye. All the doped samples resulted more active than the bare zirconia, and the correlation between the physical-chemical properties and the photoactivity of the materials has been investigated. (C) 2018 Elsevier B.V. All rights reserved.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11696/66349
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