Effect of the Microstructure of the Semiconductor Support on the Photocatalytic Performance of the Pt-PtOx/TiO2 Catalyst System
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Synthesis of Photocatalysts
2.3. Physical–Chemical Characterization of Photocatalysts
2.4. Photocatalytic Hydrogen Generation
3. Results
3.1. Photocatalytic Hydrogen Generation
3.2. Characterization of the Bare TiO2 Materials
3.3. Characterization of the Fresh Pt-PtOx/TiO2 Samples
3.4. Characterization of the Catalysts Recovered after the Reaction
4. Discussion
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Acknowledgments
Conflicts of Interest
References
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Type of TiO2 | SSA, m2/g | Crystalline Phases b, % | Grain Size, nm | ||
---|---|---|---|---|---|
Anatase | Rutile | Anatase | Rutile | ||
SG400 | 45 ± 10 a | 100 | - | 15–20 c | - |
SG450 | 47 ± 10 a | 100 | - | 15–30 c | - |
SG500 | 28 ± 10 a | 100 | - | 20–30 c | - |
P25 | 50 ± 10 | 82 | 18 | 24 b | 45 b |
Catalyst | Fresh | Recovered | ||
---|---|---|---|---|
Pt Content (Weight%) | Pt/Ti Ratio | Pt Content (Weight%) | Pt/Ti Ratio | |
SG400PtH2red | 2.2 | 1:95 = 0.011 | 1.5 | 1:150 = 0.007 |
SG400PtCalc | 3.0 | 1:74 = 0.014 | 1.9 | 1:117 = 0.009 |
SG450PtH2red | 2.1 | 1:104 = 0.010 | 1.5 | 1:146 = 0.007 |
SG450PtCalc | 3.6 | 1:62 = 0.016 | 2.0 | 1:108 = 0.009 |
SG500PtH2red | 2.4 | 1:89 = 0.011 | 1.5 | 1:140 = 0.007 |
SG500PtCalc | 4.2 | 1:50 = 0.020 | 1.9 | 1:115 = 0.009 |
P25PtH2red | 2.0 | 1:120 = 0.008 | 1.5 | 1:139 = 0.007 |
P25PtCalc | 2.2 | 1:102 = 0.010 | 1.8 | 1:150 = 0.007 |
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Majrik, K.; Pászti, Z.; Korecz, L.; Mihály, J.; May, Z.; Németh, P.; Cannilla, C.; Bonura, G.; Frusteri, F.; Tompos, A.; et al. Effect of the Microstructure of the Semiconductor Support on the Photocatalytic Performance of the Pt-PtOx/TiO2 Catalyst System. Materials 2021, 14, 943. https://doi.org/10.3390/ma14040943
Majrik K, Pászti Z, Korecz L, Mihály J, May Z, Németh P, Cannilla C, Bonura G, Frusteri F, Tompos A, et al. Effect of the Microstructure of the Semiconductor Support on the Photocatalytic Performance of the Pt-PtOx/TiO2 Catalyst System. Materials. 2021; 14(4):943. https://doi.org/10.3390/ma14040943
Chicago/Turabian StyleMajrik, Katalin, Zoltán Pászti, László Korecz, Judith Mihály, Zoltán May, Péter Németh, Catia Cannilla, Giuseppe Bonura, Francesco Frusteri, András Tompos, and et al. 2021. "Effect of the Microstructure of the Semiconductor Support on the Photocatalytic Performance of the Pt-PtOx/TiO2 Catalyst System" Materials 14, no. 4: 943. https://doi.org/10.3390/ma14040943