Synthesis of S doped TiO2 (S-TiO2) to enhance photocatalytic degradation of Ciprofloxacin in aqueous solutions under visible light

Dang Van Do; Hoa Thi Thanh Duong; Khang Van An Doi; Viet Minh Nguyen

doi:10.51316/jca.2021.077

Authors

Dang Van Do Faculty of Chemistry, University of Science, Viet Nam National University Ha Noi, 19 Le Thanh Tong, Phan Chu Trinh, Hoan Kiem, Ha Noi, Viet Nam Author
Hoa Thi Thanh Duong Faculty of Chemistry, University of Science, Viet Nam National University Ha Noi, 19 Le Thanh Tong, Phan Chu Trinh, Hoan Kiem, Ha Noi, Viet Nam Author
Khang Van An Doi Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Vietnam Author
Viet Minh Nguyen Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, 19 Le Thanh Tong, Hoan Kiem, Hanoi, Vietnam Author

DOI:

https://doi.org/10.51316/jca.2021.077

Keywords:

S-TiO2, photodegradation, Ciprofloxacin

Abstract

In this study, the sol-gel method was successfully used to synthesize S-TiO₂ for efficient photocatalytic degradation of Ciprofloxacin solution under visible irradiation. These synthesized materials were characterized by various analytical methods such as XRD, SEM-EDX, FT-IR, and UV diffuse reflectance spectroscopy (DRS). XRD, SEM-EDX, and FT-IR confirmed the successful preparation of these materials. The UV-DSR demonstrated that the material has a lower bandgap in comparison with prime TiO₂. The photodegradation results reported that the 0.33S-TiO₂had shown high efficiency in the degradation of Ciprofloxacin in comparison with TiO₂. The decomposition of 10 mg/L Ciprofloxacin concentration reached approximately 90% for 150 minutes of visible light irradiation at room temperature at pH = 4.

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