Saline slag waste as an aluminum source for the synthesis of Zn–Al–Fe–Ti layered double-hydroxides as catalysts for the photodegradation of emerging contaminants
| dc.contributor.author | Santamaría Arana, Leticia | |
| dc.contributor.author | Vicente, Miguel Ángel | |
| dc.contributor.author | Korili, Sophia A. | |
| dc.contributor.author | Gil Bravo, Antonio | |
| dc.contributor.department | Zientziak | eu |
| dc.contributor.department | Institute for Advanced Materials and Mathematics - INAMAT2 | en |
| dc.contributor.department | Ciencias | es_ES |
| dc.contributor.funder | Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa | es |
| dc.contributor.funder | Gobierno de Navarra / Nafarroako Gobernua, PI017-PI039 CORRAL | es |
| dc.date.accessioned | 2021-02-19T08:12:04Z | |
| dc.date.available | 2022-11-30T00:00:10Z | |
| dc.date.issued | 2020 | |
| dc.description.abstract | In this work, aluminum extracted from saline slag waste is valorized to create a layered double-hydroxide series containing zinc and various proportions of aluminum/titanium. Materials were synthesized by the co-precipitation method with an Me2+/Me3+ molar ratio of 3:1 and tested for the removal of diclofenac and salicylic acid from water under UV radiation. The incorporation of 5 wt% iron by wet impregnation is evaluated. In addition, another series of zinc, aluminum/iron materials with and without 5 wt% impregnated titanium are tested as catalysts for comparison. Structural characterization and comparison of the two series was performed by powder X-ray diffraction (PXRD), nitrogen adsorption at 77 K, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and temperature-programmed reduction (TPR) measurements. The uncalcinated samples had a typical hydrotalcite structure with a high crystallinity; the presence of ZnO, ZnFe2O4 or Fe3O4 was found after calcination. The specific surface areas of the dried samples ranged from 78 to 199 m2/g, being highest for Zn6Al0.5Ti1.5. Overall, the results showed that the ZnAlTi series were more effective catalysts than ZnAlFe for photodegradation of the emerging contaminants diclofenac and salicylic acid, under UV light at 298 K, considering two concentrations of the organic molecules (5 and 50 μmol/dm3). | en |
| dc.description.sponsorship | This work was funded by the Spanish Ministry of Economy, Industry and Competitiveness (AEI / MINECO), and the European Regional Development Fund (ERDF) through project MAT2016-78863-C2-R and the Government of Navarra through projects PI017-PI039 CORRAL . LS thanks the Universidad Pública de Navarra for a pre-doctoral grant. AG also thanks Banco Santander for funding through the Research Intensification Program. | en |
| dc.embargo.lift | 2022-11-30 | |
| dc.embargo.terms | 2022-11-30 | |
| dc.format.extent | 37 p. | |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.doi | 10.1016/j.jallcom.2020.156007 | |
| dc.identifier.issn | 0925-8388 | |
| dc.identifier.uri | https://academica-e.unavarra.es/handle/2454/39254 | |
| dc.language.iso | eng | en |
| dc.publisher | Elsevier | en |
| dc.relation.ispartof | Journal of Alloys and Compounds, 2020, 843, 156007 | en |
| dc.relation.projectID | info:eu-repo/grantAgreement/ES/1PE/MAT2016-78863/ | |
| dc.relation.publisherversion | https://doi.org/10.1016/j.jallcom.2020.156007 | |
| dc.rights | © 2020 Elsevier B.V. This manuscript version is made available under the CC-BY-NC-ND 4.0 | en |
| dc.rights.accessRights | info:eu-repo/semantics/openAccess | |
| dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| dc.subject | Aluminum industrial waste | en |
| dc.subject | Photocatalyst | en |
| dc.subject | Adsorption | en |
| dc.subject | Diclofenac | en |
| dc.subject | Salicylic acid | en |
| dc.subject | Hydrotalcite | en |
| dc.subject | Layered double hydroxides | en |
| dc.subject | Saline slags | en |
| dc.title | Saline slag waste as an aluminum source for the synthesis of Zn–Al–Fe–Ti layered double-hydroxides as catalysts for the photodegradation of emerging contaminants | en |
| dc.type | info:eu-repo/semantics/article | |
| dc.type.version | info:eu-repo/semantics/acceptedVersion | |
| dspace.entity.type | Publication | |
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