Graphitic Carbon Nitride for Photocatalytic Air Treatment
Abstract
:1. Introduction
2. Experimental
2.1. Sample Preparation and Characterization
2.2. Photodegradation Process Setup—NO and Acetaldehyde
2.3. EPR Measurements
3. Results
3.1. Acetaldehyde Removal
3.2. NOx Removal
3.3. Mechanism of Photocatalytic Removal
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Conflicts of Interest
References
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Sample Name | Preparation | BET Surface Area (m2/g) | Phase Composition (XRD, XRF) |
---|---|---|---|
TiO2 P25 | (Producer: Evonik), flame hydrolysis of TiCl4 | 45 | 70% anatase 30% rutile |
CG100 | (Producer: Precheza), sulphate process | 70–110 * | 100% anatase |
CN | Thermal treatment of melamine | 11 ** | — |
Ex-CN | Thermal treatment of melamine following thermal exfoliation | 90 ** | — |
S-CN | Thermal treatment of thiourea | 20 ** | Sulphur content XRF 0.22 (weight %) ** |
Mes-Ex-CN | Ex-CN with modification using methanesulfonyl | 67 ** | Sulphur content XRF 0.56 (weight %) ** |
Standard | ISO 22197-1 | ISO 22197-2 |
---|---|---|
pollutant | NOx | acetaldehyde |
inlet concentration (ppm) | 1 | 5 |
flow rate (dm3/min) | 3 | 1 |
UV irradiance (mW/cm2) | 1 | 1 |
analysis | chemiluminescence analyzer | GC |
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Baudys, M.; Paušová, Š.; Praus, P.; Brezová, V.; Dvoranová, D.; Barbieriková, Z.; Krýsa, J. Graphitic Carbon Nitride for Photocatalytic Air Treatment. Materials 2020, 13, 3038. https://doi.org/10.3390/ma13133038
Baudys M, Paušová Š, Praus P, Brezová V, Dvoranová D, Barbieriková Z, Krýsa J. Graphitic Carbon Nitride for Photocatalytic Air Treatment. Materials. 2020; 13(13):3038. https://doi.org/10.3390/ma13133038
Chicago/Turabian StyleBaudys, Michal, Šárka Paušová, Petr Praus, Vlasta Brezová, Dana Dvoranová, Zuzana Barbieriková, and Josef Krýsa. 2020. "Graphitic Carbon Nitride for Photocatalytic Air Treatment" Materials 13, no. 13: 3038. https://doi.org/10.3390/ma13133038