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Título: Phosphate capture enhancement using designed iron oxide-based nanostructures
Autor(es): Duenas Ramirez, Paula
Chaedong Lee
Fedderwitz, Rebecca
Clavijo, Antonia R.
Barbosa, Débora P. P.
Julliot, Maxime
Ramos, Joana Vaz
Begin, Dominique
Le Calvé, Stéphane
Zaloszyc, Ariane
Choquet, Philippe
Soler, Maria Aparecida Godoy
Mertz, Damien
Kofinas, Peter
Yuanzhe Piao
Begin-Colin, Sylvie
ORCID: https://orcid.org/0000-0003-1193-5904
https://orcid.org/0000-0002-8169-7086
https://orcid.org/0000-0003-0514-0726
https://orcid.org/0000-0003-0514-0726
https://orcid.org/0000-0002-0444-873X
https://orcid.org/0000-0002-6745-8978
https://orcid.org/0000-0002-2293-2226
Afiliação do autor: University of Strasbourg, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504
Seoul National University, Graduate School of Convergence Science and Technology
University of Maryland, Department of Chemical and Biomolecular Engineering
University of Brasilia, Institute of Physics
University of Brasilia, Institute of Physics
University of Strasbourg, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504
University of Strasbourg, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504
CNRS-Université de Strasbourg, Institut de Chimie et Procédés pour l’Energie, l’Environnement et la Santé (ICPEES), UMR-7515
CNRS-Université de Strasbourg, Institut de Chimie et Procédés pour l’Energie, l’Environnement et la Santé (ICPEES), UMR-7515
CNRS-Université de Strasbourg, Institut de Chimie et Procédés pour l’Energie, l’Environnement et la Santé (ICPEES), UMR-7515
CNRS/University of Strasbourg, Laboratoire des Sciences de l’Ingénieur, de l’Informatique et de l’Imagerie (ICube)
University of Brasilia, Institute of Physics
University of Strasbourg, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504
University of Brasilia, Institute of Physics
University of Strasbourg, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504
University of Maryland, Department of Chemical and Biomolecular Engineering
Seoul National University, Graduate School of Convergence Science and Technology
Advanced Institutes of Convergence Technology, 145 Gwanggyo-ro, Yeongtong-gu, Suwon-si 16229, Gyeonggi-do, Republic of Korea
University of Strasbourg, Institut de Physique et Chimie des Matériaux de Strasbourg, UMR 7504
Assunto: Óxido de ferro - nanoclusters
Alumínio
Dopagem com zinco e cobalto
fosfato
Data de publicação: 1-Fev-2023
Editora: MDPI
Referência: DUENAS RAMIREZ, Paula et al. Phosphate capture enhancement using designed iron oxide-based nanostructures. Nanomaterials, [S.l.], v. 13, n. 3, 587. DOI: https://doi.org/10.3390/nano13030587.
Abstract: Phosphates in high concentrations are harmful pollutants for the environment, and new and cheap solutions are currently needed for phosphate removal from polluted liquid media. Iron oxide nanoparticles show a promising capacity for removing phosphates from polluted media and can be easily separated from polluted media under an external magnetic field. However, they have to display a high surface area allowing high removal pollutant capacity while preserving their magnetic properties. In that context, the reproducible synthesis of magnetic iron oxide raspberry-shaped nanostructures (RSNs) by a modified polyol solvothermal method has been optimized, and the con- ditions to dope the latter with cobalt, zinc, and aluminum to improve the phosphate adsorption have been determined. These RSNs consist of oriented aggregates of iron oxide nanocrystals, providing a very high saturation magnetization and a superparamagnetic behavior that favor colloidal stability. Finally, the adsorption of phosphates as a function of pH, time, and phosphate concentration has been studied. The undoped and especially aluminum-doped RSNs were demonstrated to be very effective phosphate adsorbents, and they can be extracted from the media by applying a magnet.
Unidade Acadêmica: Instituto de Física (IF)
Licença: Copyright: © 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).
DOI: https://doi.org/10.3390/nano13030587
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