Direct synthesis of Cu-TiO2-SBA-16 photocatalysts and its application for the oxidative desulfurization of fuel oil model

Thi Hanh Truong; Duc Cuong Vu; PGS. Phạm Xuân Núi - ĐH Mỏ địa chất

doi:10.62239/jca.2024.055

Authors

Truong Thi Hanh Institute of Environment, Vietnam Maritime University, 484 Lach Tray, Kenh Duong, Le Chan, Hai Phong, Vietnam Author
Vu Duc Cuong Viet Tri University of Industry, 9-Tien Son, Tien Cat, Viet Tri, Phu Tho, Vietnam Author
Pham Xuan Nui Department of Chemical Engineering, Hanoi University of Mining and Geology, 18 Pho Vien, Duc Thang, Bac Tu Liem, Hanoi, Vietnam. Author

DOI:

https://doi.org/10.62239/jca.2024.055

Keywords:

SBA-16, TiO2, photocatalytic, oxidative desulfurization (ODS), dibenzothiophene (DBT)

Abstract

In this study, the Cu-TiO₂-SBA-16 photocatalytic materials were successfully prepared by direct hydrothermal synthesis method. The products were characterized by X-ray diffraction (XRD), Ultraviolet–Visible Diffuse Reflectance Spectroscopy (UV-Vis DRS), energy dispersive X-ray (EDX), transmission electron microscopy (TEM), N₂ adsorption–desorption isotherms, X-ray photoelectron spectroscopy (XPS) methods. The analysis illustrated that Cu-TiO₂ nanocrystals were successfully incorporated into the SBA-16 mesopores. The photocatalytic activity of these Cu-TiO₂-SBA-16 mesoporous materials have been tested by the oxidative desulfurization reaction of dibenzothiophene (DBT) using H₂O₂ as an oxidant under UV light irradiation. The results showed that the Cu-TiO₂-SBA-16 mesoporous materials prepared at the Cu/Ti mole ratios of 0.05 showed higher photocatalytic activity than the rest due to the decrease in band gap energy.

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