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Article

Ti2O3/TiO2-Assisted Solar Photocatalytic Degradation of 4-tert-Butylphenol in Water

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Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, 53 Kabanbay Batyr Ave., Nur-Sultan 010000, Kazakhstan
2
Department of Chemistry, School of Sciences and Humanities, Nazarbayev University, Nur-Sultan 010000, Kazakhstan
*
Author to whom correspondence should be addressed.
Academic Editors: Gassan Hodaifa and Rafael Borja
Catalysts 2021, 11(11), 1379; https://doi.org/10.3390/catal11111379
Received: 30 September 2021 / Revised: 8 November 2021 / Accepted: 11 November 2021 / Published: 16 November 2021
(This article belongs to the Special Issue Photocatalysis in the Wastewater Treatment)
Colored Ti2O3 and Ti2O3/TiO2 (mTiO) catalysts were prepared by the thermal treatment method. The effects of treatment temperature on the structure, surface area, morphology and optical properties of the as-prepared samples were investigated by XRD, BET, SEM, TEM, Raman and UV–VIS spectroscopies. Phase transformation from Ti2O3 to TiO2 rutile and TiO2 anatase to TiO2 rutile increased with increasing treatment temperatures. The photocatalytic activities of thermally treated Ti2O3 and mTiO were evaluated in the photodegradation of 4-tert-butylphenol (4-t-BP) under solar light irradiation. mTiO heated at 650 °C exhibited the highest photocatalytic activity for the degradation and mineralization of 4-t-BP, being approximately 89.8% and 52.4%, respectively, after 150 min of irradiation. The effects of various water constituents, including anions (CO32, NO3, Cl and HCO3) and humic acid (HA), on the photocatalytic activity of mTiO-650 were evaluated. The results showed that the presence of carbonate and nitrate ions inhibited 4-t-BP photodegradation, while chloride and bicarbonate ions enhanced the photodegradation of 4-t-BP. As for HA, its effect on the degradation of 4-t-BP was dependent on the concentration. A low concentration of HA (1 mg/L) promoted the degradation of 4-t-BP from 89.8% to 92.4% by mTiO-650, but higher concentrations of HA (5 mg/L and 10 mg/L) had a negative effect. View Full-Text
Keywords: 4-tert-butylphenol; solar photocatalysis; Ti2O3/TiO2; degradation; mineralization 4-tert-butylphenol; solar photocatalysis; Ti2O3/TiO2; degradation; mineralization
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MDPI and ACS Style

Mergenbayeva, S.; Sh. Atabaev, T.; Poulopoulos, S.G. Ti2O3/TiO2-Assisted Solar Photocatalytic Degradation of 4-tert-Butylphenol in Water. Catalysts 2021, 11, 1379. https://doi.org/10.3390/catal11111379

AMA Style

Mergenbayeva S, Sh. Atabaev T, Poulopoulos SG. Ti2O3/TiO2-Assisted Solar Photocatalytic Degradation of 4-tert-Butylphenol in Water. Catalysts. 2021; 11(11):1379. https://doi.org/10.3390/catal11111379

Chicago/Turabian Style

Mergenbayeva, Saule, Timur Sh. Atabaev, and Stavros G. Poulopoulos. 2021. "Ti2O3/TiO2-Assisted Solar Photocatalytic Degradation of 4-tert-Butylphenol in Water" Catalysts 11, no. 11: 1379. https://doi.org/10.3390/catal11111379

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