Photocatalytic Degradation of Single and Binary Mixture of Brilliant Green and Rhodamine B Dyes by Zinc Sulfide Quantum Dots
Abstract
:1. Introduction
2.2. Optical Studies of ZnS Quantum Dots
2.3. Photodegradation of Brilliant Green and Rhodamine B Dyes by the ZnS Quantum Dots
2.3.1. Effect of Catalytic Dosage on Photocatalytic Degradation
2.3.2. Effect of Irradiation Time on Photocatalytic Degradation
2.3.3. Effect of Scavengers on the Photocatalytic Degradation Efficiency of the Dyes
2.3.4. Photostability Studies of the ZnS Quantum Dots
2.3.5. Effect of pH on Photocatalytic Degradation
3. Materials and Methods
3.1. Materials
3.2. Physical Characterization Techniques
3.3. Synthesis of ZnS Quantum Dots
3.4. Photocatalytic Studies of the ZnS Quantum Dots
3.5. Detection of Reactive Oxygen Species Test
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Dyes | ZnS Photocatalyst | Degradation Efficiency (%) | Rate Constant k (min−1) | R2 |
---|---|---|---|---|
BG | ZnS–1 | 71.62 | 0.0071 | 0.994 |
ZnS–2 | 91.06 | 0.0141 | 0.9854 | |
ZnS–3 | 94.61 | 0.0245 | 0.9197 | |
RhB | ZnS–1 | 45.12 | 0.0034 | 0.9894 |
ZnS–2 | 56.69 | 0.0048 | 0.9948 | |
ZnS–3 | 71.46 | 0.0073 | 0.9886 | |
BG in (BG–RhB) | ZnS–1 | 70.79 | 0.0061 | 0.9921 |
ZnS–2 | 88.81 | 0.0116 | 0.9659 | |
ZnS–3 | 98.51 | 0.0208 | 0.9045 | |
RhB in (BG–RhB) | ZnS–1 | 65.81 | 0.0063 | 0.9818 |
ZnS–2 | 70.60 | 0.0072 | 0.9928 | |
ZnS–3 | 72.71 | 0.0078 | 0.9855 |
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Ajibade, P.A.; Oluwalana, A.E. Photocatalytic Degradation of Single and Binary Mixture of Brilliant Green and Rhodamine B Dyes by Zinc Sulfide Quantum Dots. Molecules 2021, 26, 7686. https://doi.org/10.3390/molecules26247686
Ajibade PA, Oluwalana AE. Photocatalytic Degradation of Single and Binary Mixture of Brilliant Green and Rhodamine B Dyes by Zinc Sulfide Quantum Dots. Molecules. 2021; 26(24):7686. https://doi.org/10.3390/molecules26247686
Chicago/Turabian StyleAjibade, Peter A., and Abimbola E. Oluwalana. 2021. "Photocatalytic Degradation of Single and Binary Mixture of Brilliant Green and Rhodamine B Dyes by Zinc Sulfide Quantum Dots" Molecules 26, no. 24: 7686. https://doi.org/10.3390/molecules26247686