Antioxidant activity of cerium oxide as a function of europium doped content

Yarazett Hernández-Castillo, Margarita García-Hernández, Arturo López-Marure, Jorge Humberto Luna-Domínguez, Perla Yolanda López-Camacho, Ángel de Jesús Morales-Ramírez

Research output: Contribution to journalArticleResearchpeer-review

Abstract

© 2018 Elsevier Ltd and Techna Group S.r.l. Doping metallic oxides with trivalent ions can enhance functional properties as antioxidant activity because of the increment of oxygen vacancies. In this work, Sol-gel derived cerium oxide particles, were doped with europium (0, 2.5, 5, 7.5, 10, 12.5, 15 and 20 mol%) with the aim to analyze the effect of Eu content on antioxidant activity. Heat-treated at 400 °C, doped ceria was evaluated by an in vitro ABTS• radical scavenging assay, where the inhibition of CeO2:Eu3+ doped at 5 mol% was 1.3 times higher than the commercial antioxidant. A special absorption of OH groups related to oxygen vacancies was observed by FTIR. The typical-FCC structure was detected for all samples, using XRD. SEM analyses show porous and spongy agglomerated particles with an average size of 230 nm, measured by DLS. The structural and morphological results are quite similar for all Eu3+ contents, therefore, the observed free radical scavenging capacity is strongly dependent of the chemical composition.
Original languageAmerican English
Pages (from-to)2303-2308
Number of pages2072
JournalCeramics International
DOIs
StatePublished - 1 Feb 2019

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Europium
cerium oxides
antioxidants
Cerium
europium
Antioxidants
Scavenging
scavenging
Oxygen vacancies
Oxides
trivalent ions
Cerium compounds
oxygen
Free radicals
free radicals
Particles (particulate matter)
Free Radicals
Sol-gels
Assays
chemical composition

Cite this

Hernández-Castillo, Y., García-Hernández, M., López-Marure, A., Luna-Domínguez, J. H., López-Camacho, P. Y., & Morales-Ramírez, Á. D. J. (2019). Antioxidant activity of cerium oxide as a function of europium doped content. Ceramics International, 2303-2308. https://doi.org/10.1016/j.ceramint.2018.10.145
Hernández-Castillo, Yarazett ; García-Hernández, Margarita ; López-Marure, Arturo ; Luna-Domínguez, Jorge Humberto ; López-Camacho, Perla Yolanda ; Morales-Ramírez, Ángel de Jesús. / Antioxidant activity of cerium oxide as a function of europium doped content. In: Ceramics International. 2019 ; pp. 2303-2308.
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Hernández-Castillo, Y, García-Hernández, M, López-Marure, A, Luna-Domínguez, JH, López-Camacho, PY & Morales-Ramírez, ÁDJ 2019, 'Antioxidant activity of cerium oxide as a function of europium doped content', Ceramics International, pp. 2303-2308. https://doi.org/10.1016/j.ceramint.2018.10.145

Antioxidant activity of cerium oxide as a function of europium doped content. / Hernández-Castillo, Yarazett; García-Hernández, Margarita; López-Marure, Arturo; Luna-Domínguez, Jorge Humberto; López-Camacho, Perla Yolanda; Morales-Ramírez, Ángel de Jesús.

In: Ceramics International, 01.02.2019, p. 2303-2308.

Research output: Contribution to journalArticleResearchpeer-review

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Hernández-Castillo Y, García-Hernández M, López-Marure A, Luna-Domínguez JH, López-Camacho PY, Morales-Ramírez ÁDJ. Antioxidant activity of cerium oxide as a function of europium doped content. Ceramics International. 2019 Feb 1;2303-2308. https://doi.org/10.1016/j.ceramint.2018.10.145