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Photocatalytic degradation of phenolic compound (Phenol, resorcinol and cresol) by titanium dioxide photocatalyst on ordered mesoporous carbon (CMK-3) support under UV irradiation

Rahmani, A. and Rahimzadeh, H. and Beirami, S. (2019) Photocatalytic degradation of phenolic compound (Phenol, resorcinol and cresol) by titanium dioxide photocatalyst on ordered mesoporous carbon (CMK-3) support under UV irradiation. Desalination and Water Treatment, 144. pp. 224-232.

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Abstract

The photocatalytic degradation of phenolic compounds (phenol, m-cresol and resorcinol) was investigated by the TiO 2 nanoparticles on ordered mesoporous carbon (CMK-3) support, as a nanocatalyst. CMK-3 and TiO 2 /CMK-3 were synthesized using SBA-15 as a hard template and their properties were determined by transmission electron microscopy, X-ray powder diffraction and N 2 adsorption�desorption. The results showed that CMK-3 was well synthesized and TiO 2 was properly incorporated into CMK-3. The effect of different parameters such as pH, catalyst concentration, phenolic compound concentration and irradiation time on TiO 2 /CMK-3 catalytic activity was investigated. The results showed that photocatalytic degradation of phenolic compounds was strongly influenced by these factors and the optimum conditions for removing the contaminants were pH = 6, TiO 2 /CMK-3 concentration of 0.15 g/L, phenolic compound concentration of 100 mg/L and irradiation time of 150 min. Under optimum conditions, the total organic carbon removal efficiency for phenol, m-cresol and resorcinol was observed to be 74, 62, and 78, respectively. The highest photo-degradation efficiency was obtained at the slightly acidic and near to neutral pH values compared with the alkaline and acidic range. The stability and reusability of TiO 2 /CMK-3 nanocatalyst were observed to be more than five times which it reveals that the TiO 2 /CMK-3 can be considered as a promising catalyst for the long-term degradation of phenolic compounds from aqueous solutions. © 2019 Desalination Publications. All rights reserved.

Item Type: Article
Additional Information: cited By 0
Subjects: بهداشت عمومی WA > QD Chemistry
بهداشت عمومی WA > بهداشت محیط WA
Divisions: معاونت تحقیقات و فناوری
Depositing User: GOUMS
Date Deposited: 10 Apr 2019 10:09
Last Modified: 10 Apr 2019 10:09
URI: http://eprints.goums.ac.ir/id/eprint/9821

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