2026-06-29T02:38:32Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/62312023-08-26T02:29:29Zcom_20.500.14352_14col_20.500.14352_15
Photocatalytic activity of electric-arc furnace flue dusts
Alcaraz, Lorena
Urbieta Quiroga, Ana Irene
Fernández Sánchez, Paloma
López, Félix A.
538.9
ZnFe_2O_4 nanoparticles
Magnetic-properties
Nanotube arrays
Methylene-blue
ZnO
Carbon
Photodegradation
Degradation
Steel
Mineralization
EAFD
Photocatalytic activity
Electric steel making waste
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
©2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license
This work has been partially supported by Spanish Ministry of Economy (MINECO) and Business and European Regional Development Fund (FEDER) (Grant ID MAT 2015-65274-R) and by the Comunidad de Madrid Program MULTIMAT CHALLENGE (Grant ID S2013/MIT-2862).
Two electric-arc furnace flue dusts, a waste generated during the steel production process, were characterized and their photocatalytic activity was assessed. Chemical composition by X-ray fluorescence (XRF) analysis identified that both dusts were principally formed by iron, zinc and chromium oxides. Structural characterization carried out by X-ray diffraction patterns (XRD), and micro-Raman measurements demonstrated that ZnFe_2O_4 (zinc ferrite), FeCr_2O_4 (chromite) and ZnO (zincite) are present in both waste dusts as majority phases. Scanning electron microscopy (SEM) images showed that both dusts are formed by nanoparticles with a globular and octahedral morphology characteristic of the type of flue dusts formation and the obtained phases. Cathodoluminescence (CL) spectra show the characteristics bands of spinel structure (ZnFe_2O_4) and Fe^(3+) emission. X-ray photoelectron spectroscopy (XPS) measurements indicate that Fe ions could be present in 2+ and 3+ oxidation state in the spinel structure, while zinc and chromium ions are in 2+ and 3+, respectively. In addition, the photocatalytic experiments demonstrated that the analyzed samples could be useful as photocatalyzed showing a degradation percentage above 75 %.
Ministerio de Economía y Competitividad (MINECO) / FEDER
Comunidad de Madrid
Depto. de Física de Materiales
Fac. de Ciencias Físicas
TRUE
pub
2023-06-16T15:17:46Z
2023-06-16T15:17:46Z
2020-04
journal article
https://hdl.handle.net/20.500.14352/6231
2238-7854
10.1016/j.jmrt.2019.11.053
eng
MAT 2015-65274-R
MULTIMAT CHALLENGE (S2013/MIT-2862)
Atribución-NoComercial-SinDerivadas 3.0 España
https://creativecommons.org/licenses/by-nc-nd/3.0/es/
open access
application/pdf
Elsevier