Preparation, Characterization and Photocatalytic Activity of La-Doped Zinc Oxide Nanoparticles
Abstract
:1. Introduction
2. Results and Discussion
2.1. X-ray Diffraction (XRD) Study
2.2. Energy Dispersive X-ray Analysis (EDX) Study
2.3. Transmission Electron Microscopy (TEM) Study
2.4. UV–Visible Absorption Study
2.5. Photoluminescence Spectrum Analysis
2.6. Photocatalytic Activity of La-Doped ZnO Nanoparticles
3. Materials and Methods
3.1. Preparation of La-Doped ZnO Nanoparticles
3.2. Characterizations
3.3. Photocatalytic Degradation of Methyl Orange
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Sample | 2θ (degree) | d101 (Å) | FWHM (deg.) | Average Crystallite Size (nm) | Lattice Parameter (a) (Å) | Lattice Parameter (c) (Å) |
---|---|---|---|---|---|---|
Pure ZnO | 36.268 | 2.474 | 0.244 | 34.3 | 3.2505 | 5.216 |
La0.01Zn0.99O | 36.261 | 2.475 | 0.439 | 18.9 | 3.2490 | 5.208 |
La0.05Zn0.95O | 36.320 | 2.474 | 0.695 | 12.1 | 3.2447 | 5.202 |
La0.10Zn0.90O | 36.260 | 2.480 | 0.814 | 10.3 | 3.2447 | 5.214 |
Samples | ZnO | La0.01Zn0.99O | La0.05Zn0.95O | La0.1Zn0.9O |
---|---|---|---|---|
λ (nm) | 400 | 425 | 440 | 445 |
Eg (eV) | 3.10 | 2.91 | 2.82 | 2.78 |
Sample | Rate Constant (k), min−1 | R2 |
---|---|---|
Pure ZnO | 0.0032 | 0.9792 |
La0.01Zn0.99O | 0.0039 | 0.9770 |
La0.05Zn0.95O | 0.0096 | 0.9776 |
La0.10Zn0.90O | 0.0130 | 0.9771 |
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Nguyen, L.T.T.; Nguyen, L.T.H.; Duong, A.T.T.; Nguyen, B.D.; Quang Hai, N.; Chu, V.H.; Nguyen, T.D.; Bach, L.G. Preparation, Characterization and Photocatalytic Activity of La-Doped Zinc Oxide Nanoparticles. Materials 2019, 12, 1195. https://doi.org/10.3390/ma12081195
Nguyen LTT, Nguyen LTH, Duong ATT, Nguyen BD, Quang Hai N, Chu VH, Nguyen TD, Bach LG. Preparation, Characterization and Photocatalytic Activity of La-Doped Zinc Oxide Nanoparticles. Materials. 2019; 12(8):1195. https://doi.org/10.3390/ma12081195
Chicago/Turabian StyleNguyen, Loan T. T., Lan T. H. Nguyen, Anh T. T. Duong, Bui Duc Nguyen, Nguyen Quang Hai, Viet Ha Chu, Trinh Duy Nguyen, and Long Giang Bach. 2019. "Preparation, Characterization and Photocatalytic Activity of La-Doped Zinc Oxide Nanoparticles" Materials 12, no. 8: 1195. https://doi.org/10.3390/ma12081195