Experimental and Physico-Chemical Comparison of ZnO Nanoparticles’ Activity for Photocatalytic Applications in Wastewater Treatment
Abstract
:1. Introduction
2. Results and Discussion
2.1. Physico-Chemical Characterization
2.2. Photocatalytic Results
3. Materials and Methods
3.1. ZnO Syntheses
3.1.1. Zn(NO3)2∙6H2O Precursor
3.1.2. Zn(CH3COOH)2 Precursor
3.2. Characterization Techniques
3.3. Photocatalytic Experiments
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Sample | Mean Crystallite Size |
---|---|
ZnO Acetate route | 6.84 ± 1.18 nm |
ZnO Commercial | 29.85 ± 2.59 nm |
ZnO Nitrate (heat-treated) route | 24.48 ± 2.09 nm |
Samples | MB Dark Absorption (20 min) | MB% Degradation | Dev. st. (n = 3) | k (I) |
---|---|---|---|---|
MB Photolysis | n.c. | 8% | 2.5 | 0.002 min−1 |
ZnO Acetate route | 0.9% | 78% | 2.0 | 0.054 min−1 |
ZnO Commercial | 5.2% | 100%* | 0.5 | 0.162 min−1 |
ZnO Nitrate (heat treated) route | 2.3% | 93% | 0.9 | 0.085 min−1 |
Samples | Egap Values | λ Absorption |
---|---|---|
ZnO Nitrate (heat treated) route | 3.27 eV | 379 nm |
ZnO Commercial | 3.40 eV | 364 nm |
ZnO Acetate route | 3.31 eV | 374 nm |
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Alberti, S.; Basciu, I.; Vocciante, M.; Ferretti, M. Experimental and Physico-Chemical Comparison of ZnO Nanoparticles’ Activity for Photocatalytic Applications in Wastewater Treatment. Catalysts 2021, 11, 678. https://doi.org/10.3390/catal11060678
Alberti S, Basciu I, Vocciante M, Ferretti M. Experimental and Physico-Chemical Comparison of ZnO Nanoparticles’ Activity for Photocatalytic Applications in Wastewater Treatment. Catalysts. 2021; 11(6):678. https://doi.org/10.3390/catal11060678
Chicago/Turabian StyleAlberti, Stefano, Irene Basciu, Marco Vocciante, and Maurizio Ferretti. 2021. "Experimental and Physico-Chemical Comparison of ZnO Nanoparticles’ Activity for Photocatalytic Applications in Wastewater Treatment" Catalysts 11, no. 6: 678. https://doi.org/10.3390/catal11060678