Iron Oxyhydroxide-Covalent Organic Framework Nanocomposite for Efficient As(III) Removal in Water
EntityUAM. Departamento de Física de la Materia Condensada; UAM. Departamento de Química Inorgánica
PublisherAmerican Chemical Society
10.1021/acsami.2c14744ACS Applied Materials and Interfaces 14 (2022): 50163−50170
ISSN1944-8244 (print); 1944-8252 (online)
Funded byThis work has been supported by the Spanish MINECO (PID2019-106268GB-C32 and PCI2019-103594) and through the “María de Maeztu” Programme for Units of Excellence in R&D (CEX2018-000805-M)
SubjectsArsenic capture; COF; Iron oxyhydroxide nanorods; Nanocomposite; Water remediation; Física; Química
Rights© 2022 American Chemical Society
Esta obra está bajo una Licencia Creative Commons Atribución 4.0 Internacional.
The presence of heavy metal ions in water is an environmental issue derived mainly from industrial and mineral contamination. Metal ions such as Cd(II), Pb(II), Hg(II), or As(III) are a significant health concern worldwide because of their high toxicity, mobility, and persistence. Covalent organic frameworks (COFs) are an emerging class of crystalline organic porous materials that exhibit very interesting properties such as chemical stability, tailored design, and low density. COFs also allow the formation of composites with remarkable features because of the synergistic combination effect of their components. These characteristics make them suitable for various applications, among which water remediation is highly relevant. Herein, we present a novel nanocomposite of iron oxyhydroxide@COF (FeOOH@Tz-COF) in which lepidocrocite (γ-FeOOH) nanorods are embedded in between the COF nanoparticles favoring As(III) remediation in water. The results show a remarkable 98.4% As(III) uptake capacity in a few minutes and impressive removal efficiency in a wide pH range (pH 5−11). The chemical stability of the material in the working pH range and the capability of capturing other toxic heavy metals such as Pb(II) and Hg(II) without interference confirm the potential of FeOOH@Tz-COF as an effective adsorbent for water remediation even under harsh conditions
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Google Scholar:Guillem Navajas, Ana - Martín Illán, Jesús Ángel - Salagre Rubio, Elena - Michel, Enrique G. - Rodriguez San-Miguel, David - Zamora Abanades, Félix Juan
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Gibaja, Carlos; Rodríguez-San-Miguel, David; Paz, Wendel S.; Torres, Iñigo; Salagre, Elena; Segovia Cabrero, María Pilar; García Michel, Enrique; Assebban, Mhamed; Ares García, Pablo; Hernández-Maldonado, David; Ramasse, Quentin; Abellán, Gonzalo; Gómez Herrero, Julio; Varela, Maria; Palacios Burgos, Juan José; Zamora Abanades, Félix Juan