Surface And Redox Characterization Of New Nanostructured Zro2@Ceo2 Systems With Potential Catalytic Applications
Ceria-zirconia mixed oxides are widely used as catalysts and catalytic supports. Nevertheless, due to economic and geo-strategic concerns, reducing and optimizing the lanthanide content in these formulations while preserving or even improving their excellent redox and catalytic properties has become...
- Autores:
-
Barroso Bogeat, Adrián
Nuñez Perez, Bernardo Enrique
Blanco, Ginesa
Pintado, José María
Hernández Garrido, Juan Carlos
Calvino Gámez, José Juan
- Tipo de recurso:
- Article of journal
- Fecha de publicación:
- 2018
- Institución:
- Corporación Universidad de la Costa
- Repositorio:
- REDICUC - Repositorio CUC
- Idioma:
- eng
- OAI Identifier:
- oai:repositorio.cuc.edu.co:11323/981
- Acceso en línea:
- https://hdl.handle.net/11323/981
https://doi.org/10.1002/sia.6444
https://repositorio.cuc.edu.co/
- Palabra clave:
- Ceria-Zirconia
Core@Shell Nanostructure
Redox Characterization
Surface Characterization
- Rights
- openAccess
- License
- Atribución – No comercial – Compartir igual
Summary: | Ceria-zirconia mixed oxides are widely used as catalysts and catalytic supports. Nevertheless, due to economic and geo-strategic concerns, reducing and optimizing the lanthanide content in these formulations while preserving or even improving their excellent redox and catalytic properties has become a challenge for current research. In this context, the design of core@shell nanostructures arises as a feasible alternative to achieve the aforesaid goal. In the present work, a new nanostructured ZrO2@CeO2 system based on spherical and mesoporous zirconia cores coated by a well-dispersed nanometer-thick ceria layer has been prepared by a novel synthetic approach in 2 different steps: (1) synthesis of the zirconia cores by a sol-gel method and (2) coating with a thin ceria shell by controlled chemical precipitation. The resulting nanocomposite was characterized by several techniques, which clearly reveal its perfect core@shell nanostructure and enhanced reducibility as compared with pure ceria. |
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