CaTiO3: Influence of Ag Doping on Photocatalytic Activity for Application in Rhodamine B dye Removal

CaTiO3: Influence of Ag Doping on Photocatalytic Activity for Application in Rhodamine B dye Removal

This study focuses on the preparation and characterization of silver-doped calcium titanate (CaTiO3) photocatalysts for the degradation of Rhodamine B (RhB) dye. Utilizing a hydrothermal microwave-assisted method, efficient photocatalysts of pure CaTiO3 (CT) and 3% (CT3%) and 5% (CT5%) Ag-doped CaTi...

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Bibliographic Details
Published in:Materials research (São Carlos, São Paulo, Brazil) Vol. 27; no. suppl 2
Main Authors: Cuzzati, Flávia Landgraf, Parras, Gustavo Aparecido Silva, Freitas, Gabriela de Souza, Parizi, Marcela Prado Silva, Souza, Agda Eunice de
Format: Journal Article
Language:English
Published: ABM, ABC, ABPol 01-01-2024
Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
Subjects:
Dye
ENGINEERING, CHEMICAL
Hydrothermal microwave-assisted method
MATERIALS SCIENCE, MULTIDISCIPLINARY
METALLURGY & METALLURGICAL ENGINEERING
Photocatalysis
Rhodamine B
Silver-doped calcium titanate
Dye
Rhodamine B
Photocatalysis
Hydrothermal microwave-assisted method
Silver-doped calcium titanate
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Summary:This study focuses on the preparation and characterization of silver-doped calcium titanate (CaTiO3) photocatalysts for the degradation of Rhodamine B (RhB) dye. Utilizing a hydrothermal microwave-assisted method, efficient photocatalysts of pure CaTiO3 (CT) and 3% (CT3%) and 5% (CT5%) Ag-doped CaTiO3 were prepared. X-ray diffraction confirmed the orthorhombic phase of CaTiO3 with residual TiO2, more pronounced in the CT3%. Micro-Raman and FTIR spectra verified the presence of TiO2, while SEM images revealed distinctive morphologies. The band gap energy was lower in Ag-doped samples, particularly in the CT3% sample. Photocatalytic tests demonstrated superior RhB degradation with the CT3% catalyst. A 22 factorial design was used to determine the ideal condition for the photocatalysis. Photocatalysis with CT3% was efficient in toxicity removal, but stability tests indicated a decline in performance over multiple cycles. These findings suggest the potential of Ag-doped CaTiO3 as efficient photocatalysts for dye degradation.
ISSN:1980-5373
1516-1439
DOI:10.1590/1980-5373-mr-2024-0201