Calcination-driven Co4+ incorporation in hydrothermally synthesized NaTaO3
Abstract A cobalt-doped sodium tantalate (NaTaO3, NTO) catalyst was synthesized via a hybrid approach combining hydrothermal synthesis with a brief calcination step. Structural characterization through X-ray absorption spectroscopy and X-ray photoelectron spectroscopy revealed enhanced cobalt incorporation within the NaTaO3 matrix following the calcination treatment. This finding was corroborated by catalytic performance evaluations during liquid-phase p-xylene oxidation. The Co 3s X-ray photoelectron spectroscopy analysis provided direct evidence of cobalt existing in the tetravalent oxidation state (Co4+) within the host lattice, indicating successful substitution at tantalum sites.
Authors
- Tomoko Yoshida (ORCID: https://orcid.org/0000-0003-2117-5400)
- Juan Casanova‐Cháfer (ORCID: https://orcid.org/0000-0002-3508-3462)
- Masato Yanagi
- Takayoshi Hara (ORCID: https://orcid.org/0000-0001-7493-8112)
- Nobuyuki Ichikuni (ORCID: https://orcid.org/0000-0002-4241-061X)
- Hiroshi Ōnishi (ORCID: https://orcid.org/0000-0003-1873-9105)
- Carla Bittencourt (ORCID: https://orcid.org/0000-0002-3330-6693)
- Y.H. Chew
Institutions
- University of Mons (BE)
- Chiba University (JP)
- Institute for Molecular Science (JP)
- Nagoya University (JP)
- Kobe University (JP)
Publication Details
- Journal
- Chemistry Letters
- Published
- 2025-03-12
- DOI
- https://doi.org/10.1093/chemle/upaf053
- Citations
- 1
- Primary Topic
- Zeolite Catalysis and Synthesis
- Type
- article
- Field-Weighted Citation Impact
- 0.54
Funders
- Fonds De La Recherche Scientifique - FNRS
- Japan Society for the Promotion of Science