Comparison of Graphitic Carbon Nitrides Synthetized from Melamine and Melamine-Cyanurate Complex: Characterization and Photocatalytic Decomposition of Ofloxacin and Ampicillin
Abstract
:1. Introduction
2. Materials and Methods
2.1. Chemicals
2.2. Synthesis of Melamine-Cyanurate (MCA)
2.3. Synthesis of melamine (CN-M) and Melamine-Cyanurate Complex (CN-MCA)
2.4. Elemental Analysis
2.5. UV–Vis Spectrometry
2.6. Specific Surface Area Measurement
2.7. X-ray Diffraction Analysis
2.8. Fourier Transform Infrared Spectroscopy
2.9. Scanning Electron Microscopy
2.10. Photocatalytic Decompositions
2.11. Electrochemical Measurements
2.12. Zeta Potential Measurement
2.13. Statistical Calculations
3. Results
3.1. Elemental Analysis
3.2. UV–Vis DR Spectroscopy
3.3. Specific Surface Area and Pore Size Distribution Measurement
3.4. XRD Analysis
3.5. FTIR Analysis
3.6. Scanning Electron Microscopy (SEM) Analysis
3.7. Photocatalytic Activity
3.8. Measurement of Zeta Potentials
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Material | C (wt.%) | H (wt.%) | N (wt.%) | C/N | O (wt.%) |
---|---|---|---|---|---|
MCA | 27.90 | 3.83 | 49.40 | 0.565 | 18.87 |
CN-M | 34.93 | 1.72 | 61.47 | 0.568 | 1.88 |
CN-MCA | 34.90 | 2.38 | 62.10 | 0.562 | 0.62 |
Material | Eg (eV) | SSA (m2 g−1) |
---|---|---|
CN-M | 2.64 | 12 |
CN-MCA | 2.73 | 225 |
Material | 2 Theta (deg) | FWHM(002) (deg) | L(002) (nm) | d(002) (nm) |
---|---|---|---|---|
CN-M | 31.94 | 1.29 | 7.15 | 0.325 |
CN-MCA | 32.00 | 1.44 | 6.41 | 0.325 |
Material | kobs (Ofloxacin) × 10−3 (min−1) | kobs (Ampicillin) × 10−3 (mol L−1 min−1) | ECD (eV) | EVB (eV) |
---|---|---|---|---|
CN-M | 17.9 ± 0.8 | 1.36 ± 0.05 | −1.23 | 1.41 |
CN-MCA | 41.7 ± 1.3 | 6.63 ± 0.21 | −1.17 | 1.56 |
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Praus, P.; Smýkalová, A.; Foniok, K. Comparison of Graphitic Carbon Nitrides Synthetized from Melamine and Melamine-Cyanurate Complex: Characterization and Photocatalytic Decomposition of Ofloxacin and Ampicillin. Materials 2021, 14, 1967. https://doi.org/10.3390/ma14081967
Praus P, Smýkalová A, Foniok K. Comparison of Graphitic Carbon Nitrides Synthetized from Melamine and Melamine-Cyanurate Complex: Characterization and Photocatalytic Decomposition of Ofloxacin and Ampicillin. Materials. 2021; 14(8):1967. https://doi.org/10.3390/ma14081967
Chicago/Turabian StylePraus, Petr, Aneta Smýkalová, and Kryštof Foniok. 2021. "Comparison of Graphitic Carbon Nitrides Synthetized from Melamine and Melamine-Cyanurate Complex: Characterization and Photocatalytic Decomposition of Ofloxacin and Ampicillin" Materials 14, no. 8: 1967. https://doi.org/10.3390/ma14081967