Characterization and Comparative Performance of TiO2 Photocatalysts on 6-Mercaptopurine Degradation by Solar Heterogeneous Photocatalysis

Autor: Luis A. González-Burciaga, Cynthia M. Núñez-Núñez, Adela Lemus-Santana, Manuel Avila-Santos, José B. Proal-Nájera, Miriam M. Morones-Esquivel
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Catalysts
Volume 10
Issue 1
Catalysts, Vol 10, Iss 1, p 118 (2020)
ISSN: 2073-4344
DOI: 10.3390/catal10010118
Popis: 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&ndash
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&ndash
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.
Databáze: OpenAIRE
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