Catalytic activity of CeO@TiO for environmental protection

• Published in: New journal of chemistry 2024-02, Vol.48 (6), p.2842-2848
• Main Authors: Zagaynov, Igor V, Liberman, Elena Yu, Prikhodko, Olga P, Kon'kova, Tatiana V
• Format: Article
• ISSN: 1144-0546; 1369-9261
• DOI: 10.1039/d3nj05303b

CeO 2 @TiO 2 core-shell nanostructures are synthesized at various titania contents by the sol-gel method. Such supports have been evaluated in the CO oxidation reaction to study lattice oxygen mobility. Also, Fe x O y /CeO 2 @TiO 2 synthesized by the impregnation method to study the catalytic activities of the degradation of methylene blue and carmoisine dyes in Fenton-like processes. CeO 2 @TiO 2 catalysts with a higher proportion of rutile have better activity in CO oxidation. The oxidation of dyes proceeds most efficiently on Fe-composites with titania containing a higher proportion of metastable phases of titania (anatase + brookite), in contrast to CO oxidation catalysts. The catalytic behavior of the materials was discussed to determine the role of the core-shell structure, ceria-titania interaction, and other particular qualities. The proposed systems can be promising catalysts for environmental protection. Core-shell nanoparticles can be used as catalysts. CeO 2 @TiO 2 catalysts with a higher proportion of rutile have better activity in CO oxidation. Dyes oxidation proceeds most efficiently on Fe-composites with a higher proportion of anatase and brookite.