NO Oxidation on Lanthanum-Doped Ceria Nanoparticles with Controlled Morphology
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Título: | NO Oxidation on Lanthanum-Doped Ceria Nanoparticles with Controlled Morphology |
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Autor/es: | Fernández-García, Susana | Tinoco, Miguel | Hungría, Ana Belén | Chen, Xiaowei | Calvino, Jose J. | Martínez-Munuera, Juan Carlos | Giménez-Mañogil, Javier | Garcia-Garcia, Avelina |
Grupo/s de investigación o GITE: | Materiales Carbonosos y Medio Ambiente |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales |
Palabras clave: | Lanthanum | Ceria | Nanocubes | Nanorods | NO oxidation |
Fecha de publicación: | 15-may-2023 |
Editor: | MDPI |
Cita bibliográfica: | Fernández-García S, Tinoco M, Hungría AB, Chen X, Calvino JJ, Martínez-Munuera JC, Giménez-Mañogil J, García-García A. NO Oxidation on Lanthanum-Doped Ceria Nanoparticles with Controlled Morphology. Catalysts. 2023; 13(5):894. https://doi.org/10.3390/catal13050894 |
Resumen: | The present work aims to assess the impact of morphology and reducibility on lanthanum-doped ceria nanocatalysts with controlled morphology on the NO oxidation reaction. Specifically, samples were prepared using a hydrothermal method incorporating lanthanum at varying molar concentrations (0, 5, 10, and 15 mol.%) into ceria with a controlled morphology (nanocubes and nanorods). The structural, compositional, and redox characterization of these catalysts has been performed via scanning transmission electron microscopy (STEM), X-ray diffraction (XRD), X-ray energy dispersive spectroscopy (X-EDS), inductively coupled plasma (ICP), hydrogen temperature-programmed reduction (H2-TPR), and oxygen storage capacity (OSC). NO oxidation catalytic tests were conducted, and the results were compared with estimated curves (obtained by considering the proportions of the corresponding components), which revealed the presence of a synergistic effect between lanthanum and ceria. The degree of enhancement was found to depend on both the morphology and the amount of lanthanum incorporated into CeO2. These findings may facilitate the optimization of features concerning ceria-based nanocatalysts for the removal of NOx emissions from exhaust gases. |
Patrocinador/es: | This research was funded by Generalitat Valenciana (CIPROM/2021/070 project), the Spanish Ministry of Science and Innovation/Research Spanish Agency (PID2019-105542RB-I00/AEI/10.13039/501100011033, PID2020-113006RB-I00/AEI/10.13039/501100011033 and PID2020-113809RB-C33 projects), and UE-FEDER funding. |
URI: | http://hdl.handle.net/10045/134552 |
ISSN: | 2073-4344 |
DOI: | 10.3390/catal13050894 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 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/). |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.3390/catal13050894 |
Aparece en las colecciones: | INV - MCMA - Artículos de Revistas |
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