Compartir
Título
Tailoring CO2 adsorption and activation properties of ceria nanocubes by coating with nanometre-thick yttria layers
Autor(es)
Assunto
Ceria
Yttria
Surface basicity
Surface reducibility
CO2 adsorption
CO2 activation
Clasificación UNESCO
2303 Química Inorgánica
2211.02 Materiales Compuestos
Fecha de publicación
2021
Editor
Elsevier
Citación
Barroso Bogeat, A., Blanco, G., Pintado, J.M., Goma, D., Calvino Gámez, J.J. (2021). Tailoring CO2 adsorption and activation properties of ceria nanocubes by coating with nanometre-thick yttria layers, Surfaces and Interfaces, 26. pp 1-12. https://doi.org/10.1016/j.surfin.2021.101353
Resumen
[EN] Ceria (CeO2) is a ubiquitous component in catalysts for environmental protection processes, especially those
devoted to CO2 valorisation. Aimed at preparing ceria-based nanomaterials with enhanced CO2 adsorption and
activation properties, both the surface acid-base and redox features of ceria nanocubes were modulated by a
novel, simple, wet chemistry synthetic strategy consisting of their coating with yttria (Y2O3) layers of variable
thickness in the nanometre scale. The as-synthesised samples were characterised with special attention to their
surface basicity and reducibility. Characterisation results revealed that the surface doping with yttria not only
improved both the reducibility at low temperature and CO2 adsorption capacity of ceria nanocubes, but also
introduced a variety of basic sites with different strength. Finally, the careful control of the yttria layer thickness
allowed to modulate these effects and thereby the ability of nanostructured ceria to adsorb and activate the CO2
molecule.
URI
ISSN
2468-0230
DOI
10.1016/j.surfin.2021.101353
Versión del editor
Aparece en las colecciones