Pure, Size Tunable ZnO Nanocrystals Assembled into Large Area PMMA Layer as Efficient Catalyst
Abstract
:1. Introduction
2. Results
2.1. Optimisation of Synthesis
2.1.1. Synthesis Time
2.1.2. Synthesis Temperature
2.2. Structural Properties
2.3. Optical Properties
2.3.1. Photoluminescence Measurements
2.3.2. Photocatalytic Properties
- Without and with annealing at 80 °C, ~9% (0.36 mg ZnO/4 mg) of ZnO nanostructures are present in the powder sample.
- Annealing at 80 to 250 °C, ZnO percentage increased from 10% (0.4 mg ZnO/4 mg) to ~99% (3.96 mg ZnO/4 mg).
- From 250 to 800 °C, ZnO percentage reached 100% (4 mg ZnO/4 mg) and remains constant.
2.3.3. Large Area Layer of ZnO NP
3. Materials and Methods
3.1. Fabrication of ZnO NC
3.2. Self-Assembly of ZnO Nanostructures into Nanoporous PMMA Layer
3.3. Characterization
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
Appendix A
Appendix B
References
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ZnO Annealing Temperature (°C) | XRD | ||
---|---|---|---|
%ZnO | a = b (nm) | c (nm) | |
n/a | 9% | 0.3313 | 0.5273 |
80 | 10% | 0.3248 | 0.5195 |
100 | 30% | 0.3252 | 0.5207 |
150 | 75% | 0.3251 | 0.5209 |
250 | 99% | 0.3247 | 0.5202 |
500 | 100% | 0.3246 | 0.5201 |
800 | 100% | 0.3243 | 0.5197 |
ZnO Annealing Temperature (°C) | UV-Vis Absorption | |
---|---|---|
Wavelength Absorption Peak (nm) | Optical Band Gap (eV) | |
n/a | 365 | 3.40 |
80 | 375 | 3.31 |
100 | 378 | 3.28 |
150 | 371 | 3.34 |
250 | 375 | 3.31 |
500 | 378 | 3.28 |
ZnO Annealing Temperature (°C) | Photocatalysis | |||
---|---|---|---|---|
Mass of ZnO (mg) | % of MB Degradation | Photodegradation Rate (min−1) | Regression Coefficient (R2) | |
n/a | 0.36 | 13.7 | 0.0012 | 0.93 |
80 | 0.4 | 6.6 | 0.0008 | 0.92 |
100 | 1.2 | 16.8 | 0.0011 | 0.88 |
150 | 3 | 86.3 | 0.0082 | 0.94 |
250 | 3.96 | 98.0 | 0.0093 | 0.90 |
500 | 4 | 94.9 | 0.0073 | 0.88 |
800 | 4 | 67.0 | 0.0059 | 0.99 |
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Shahine, I.; Beydoun, N.; Gaumet, J.J.; Bendeif, E.-E.; Rinnert, H.; Magri, P.; En Naciri, A.; Miska, P.; Jradi, S.; Akil, S. Pure, Size Tunable ZnO Nanocrystals Assembled into Large Area PMMA Layer as Efficient Catalyst. Catalysts 2019, 9, 162. https://doi.org/10.3390/catal9020162
Shahine I, Beydoun N, Gaumet JJ, Bendeif E-E, Rinnert H, Magri P, En Naciri A, Miska P, Jradi S, Akil S. Pure, Size Tunable ZnO Nanocrystals Assembled into Large Area PMMA Layer as Efficient Catalyst. Catalysts. 2019; 9(2):162. https://doi.org/10.3390/catal9020162
Chicago/Turabian StyleShahine, Issraa, Nour Beydoun, Jean Jacques Gaumet, El-Eulmi Bendeif, Hervé Rinnert, Pierre Magri, Aotmane En Naciri, Patrice Miska, Safi Jradi, and Suzanna Akil. 2019. "Pure, Size Tunable ZnO Nanocrystals Assembled into Large Area PMMA Layer as Efficient Catalyst" Catalysts 9, no. 2: 162. https://doi.org/10.3390/catal9020162
APA StyleShahine, I., Beydoun, N., Gaumet, J. J., Bendeif, E. -E., Rinnert, H., Magri, P., En Naciri, A., Miska, P., Jradi, S., & Akil, S. (2019). Pure, Size Tunable ZnO Nanocrystals Assembled into Large Area PMMA Layer as Efficient Catalyst. Catalysts, 9(2), 162. https://doi.org/10.3390/catal9020162