Development of new ruthenium complex-based photocatalysts for the degradation of Remazol Red Ultra RGB.
- 1Coordination Chemistry and Polymers Laboratory (LQCPol), Institute of Chemistry, Federal University of Rio Grande do Norte (UFRN) Natal 59078-970 Brazil [email protected].
- 2Molecular Sieves Laboratory (LABPEMOL), Institute of Chemistry, Federal University of Rio Grande do Norte (UFRN) Natal 59078-970 Brazil.
- 3Bioinorganic Laboratory, Department of Organic and Inorganic Chemistry, Federal University of Ceará (UFC) P.O. Box 6021 Fortaleza CE 60440-900 Brazil.
Abstract
The contamination of aquatic environments by persistent synthetic dyes constitutes a significant environmental problem, with Remazol Red Ultra RGB standing out due to its high chemical stability and wide industrial application. In this work, ruthenium-based complexes were developed and evaluated as photocatalysts for the degradation of this dye in aqueous medium. The complexes were characterized by UV-Vis and infrared spectroscopy, cyclic voltammetry, and theoretical studies based on DFT and TD-DFT. In the photocatalytic assays, the materials showed high degradation rates, with emphasis on the NAT60 complex, which promoted 100% dye removal within 60 minutes of irradiation, evidenced by the decrease in the absorption band at 514 nm. The other complexes showed efficiencies higher than 70% within the same time interval. In order to evaluate the effect of a high surface area matrix, the catalyst was supported on mesoporous silica of the SBA-15 type, forming the NAT60/SBA-15 system, which maintained an efficiency of 85.25%, demonstrating high photocatalytic activity. The results confirm the potential of ruthenium complexes, both in molecular and supported forms, as promising photocatalysts for advanced oxidative processes applied to the sustainable treatment of dye-containing effluents.
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BibTeX
@article{oliveira2026development,
title = {{Development of new ruthenium complex-based photocatalysts for the degradation of Remazol Red Ultra RGB.}},
author = {Dayane C de Oliveira and Diana T de L Souza and Wesley E C Cavalcanti and Johnatan de O Soares and Daniel de L Pontes and Ana C F de B Pontes and Tércio de F Paulo and Sibele B C Pergher and E Francisco O N da Silva},
journal = {RSC advances},
year = {2026},
month = oct,
doi = {10.1039/d6ra06712c},
url = {https://europepmc.org/article/MED/42953473},
note = {CC BY},
}
RIS
TY - JOUR
TI - Development of new ruthenium complex-based photocatalysts for the degradation of Remazol Red Ultra RGB.
AU - Dayane C de Oliveira
AU - Diana T de L Souza
AU - Wesley E C Cavalcanti
AU - Johnatan de O Soares
AU - Daniel de L Pontes
AU - Ana C F de B Pontes
AU - Tércio de F Paulo
AU - Sibele B C Pergher
AU - E Francisco O N da Silva
PY - 2026
DA - 2026/10/28
JO - RSC advances
DO - 10.1039/d6ra06712c
UR - https://europepmc.org/article/MED/42953473
AB - The contamination of aquatic environments by persistent synthetic dyes constitutes a significant environmental problem, with Remazol Red Ultra RGB standing out due to its high chemical stability and wide industrial application. In this work, ruthenium-based complexes were developed and evaluated as photocatalysts for the degradation of this dye in aqueous medium. The complexes were characterized by UV-Vis and infrared spectroscopy, cyclic voltammetry, and theoretical studies based on DFT and TD-DFT. In the photocatalytic assays, the materials showed high degradation rates, with emphasis on the NAT60 complex, which promoted 100% dye removal within 60 minutes of irradiation, evidenced by the decrease in the absorption band at 514 nm. The other complexes showed efficiencies higher than 70% within the same time interval. In order to evaluate the effect of a high surface area matrix, the catalyst was supported on mesoporous silica of the SBA-15 type, forming the NAT60/SBA-15 system, which maintained an efficiency of 85.25%, demonstrating high photocatalytic activity. The results confirm the potential of ruthenium complexes, both in molecular and supported forms, as promising photocatalysts for advanced oxidative processes applied to the sustainable treatment of dye-containing effluents.
SN - 2046-2069
ER -