Characterization and Comparative Performance of TiO2 Photocatalysts on 6-Mercaptopurine Degradation by Solar Heterogeneous Photocatalysis
The crystallographic properties of two titanium dioxide (TiO2) photocatalysts, P25, and commercial C1-TiO2 reactive grade, were analyzed by X-ray diffraction (XRD) and the band-gap was calculated with UV–Vis spectrometry with integration sphere. Then, their performance was tested in the degradation...
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| Veröffentlicht in: | Catalysts 2020-01, Vol.10 (1), p.118 |
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| creator | González-Burciaga, Luis A. Núñez-Núñez, Cynthia M. Morones-Esquivel, Miriam M. Avila-Santos, Manuel Lemus-Santana, Adela Proal-Nájera, José B. |
| description | The crystallographic properties of two titanium dioxide (TiO2) photocatalysts, P25, and commercial C1-TiO2 reactive grade, were analyzed by X-ray diffraction (XRD) and the band-gap was calculated with UV–Vis spectrometry with integration sphere. Then, their performance was tested in the degradation of 6-mercaptopurine (6-MP) by heterogeneous photocatalysis with solar radiation under different pH conditions and the addition of hydrogen peroxide (H2O2); the degradation efficiency was monitored by UV–Vis spectrophotometry. The XRD analysis showed that both photocatalysts studied have anatase phase, while only P25 contains rutile; the band gap values were lower, in both catalysts, than those reported for catalysts obtained by the sol-gel method. With both photocatalysts, degradation experiments showed efficiency greater than 98% in experiments in the presence of H2O2 regardless of pH. The properties of the photocatalysts, along with the data obtained from the experimentation, helped determine the best semiconductor for the degradation of 6-MP with these operating conditions in this work. |
| doi_str_mv | 10.3390/catal10010118 |
| format | Article |
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The properties of the photocatalysts, along with the data obtained from the experimentation, helped determine the best semiconductor for the degradation of 6-MP with these operating conditions in this work.</description><identifier>ISSN: 2073-4344</identifier><identifier>EISSN: 2073-4344</identifier><identifier>DOI: 10.3390/catal10010118</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Anatase ; Catalysts ; Chemical reactions ; Crystallography ; Degradation ; Drug dosages ; Energy ; Energy gap ; Experimentation ; Experiments ; Hydrogen peroxide ; Particle size ; Photocatalysis ; Photocatalysts ; Pollutants ; Radiation ; Semiconductors ; Software ; Sol-gel processes ; Solar radiation ; Spectrophotometry ; Titanium dioxide ; X-ray diffraction</subject><ispartof>Catalysts, 2020-01, Vol.10 (1), p.118</ispartof><rights>2020 by the authors. Licensee MDPI, Basel, Switzerland. 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| subjects | Anatase Catalysts Chemical reactions Crystallography Degradation Drug dosages Energy Energy gap Experimentation Experiments Hydrogen peroxide Particle size Photocatalysis Photocatalysts Pollutants Radiation Semiconductors Software Sol-gel processes Solar radiation Spectrophotometry Titanium dioxide X-ray diffraction |
| title | Characterization and Comparative Performance of TiO2 Photocatalysts on 6-Mercaptopurine Degradation by Solar Heterogeneous Photocatalysis |
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