Article info.

ABSTRACT

Received 04 Mar 2020
Revised 13 Apr 2020

Accepted 31 Jul 2020

The synthesis of Al₂TiO₅/SBA-15 (ATO/SBA) catalysts was investigated by the sol-gel method using precursors including aluminum nitrate, titanium isopropoxide, SBA-15, and citric acid. The formation of ATO/SBA phases was analyzed by X-ray diffraction (XRD). The content of ATO in ATO/SBA catalysts strongly affected the photocatalytic degradation of cinnamic acid (CA). The obtained results showed that 75% ATO in ATO/SBA (75ATO/SBA ) phases led to the highest efficiency of CA photodegradation. The characteristics of 75ATO/SBA sample were determined by Fourier transform infrared spectroscopy, Brunauer-Emmett-Teller adsorption, UV-Vis diffuse reflectance spectroscopy, and transmission electron microscopy. Moreover, the activity of 75ATO/SBA on photocatalytic degradation of CA was also investigated by catalyst dosage, initial pH of CA solution, and airflow rate. The optimum condition for photodegradation efficiency of CA was found to be at C_cat = 0.75 g/L, pH = 3.8, Q_air = 0.3 L/min and t_react = 6 hrs.

Keywords

Cinnamic acid, degradation, mesoporous silica material, photocatalyst, pseudobrookite

Cited as: Trung, N.D., Nhuan, N.T., Hieu, M.V. and Hong, N.T., 2020. Al₂TiO₅/SBA-15 promoting photocatalytic degradation of cinnamic acid. Can Tho University Journal of Science. 12(2): 45-52.