RT journal article
T1 NO Oxidation on Lanthanum-Doped Ceria Nanoparticles with Controlled Morphology
A1 Fernández García, Susana
A1 Tinoco, Miguel
A1 Hungría Hernández, Ana Belén
A1 Chen, Xiaowei
A1 Calvino Gámez, José Juan
A1 Martínez Munuera, Juan Carlos
A1 Giménez Mañogil, Javier
A1 García García, Avelina
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 ceria
K1 lanthanum
K1 nanocubes
K1 nanorods
K1 NO oxidation
AB 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.
PB MDPI
SN 2073-4344
YR 2023
FD 2023-05-15
LK http://hdl.handle.net/10498/31554
UL http://hdl.handle.net/10498/31554
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 08-nov-2026