Efficient Photodegradation of Paracetamol, Diclofenac Sodium, and Tetracycline Using TiO2-Fe3O4 Nanocomposite Loaded on Chitosan Nickel Complex

https://doi.org/10.22146/ijc.113907

Kozhikottuthodi Puthanveedu Nalini(1*), Sugaraj Samuel(2), Rajendran Sribalan(3)

(1) Department of Physics, The New College (Affiliated to University of Madras), Chennai-600014, India; Department of Physics, Chevalier T. Thomas Elizabeth College for Women (Affiliated to University of Madras), Chennai-600011, India
(2) Department of Physics, The New College (Affiliated to University of Madras), Chennai-600014, India
(3) Biochemie Innovations Lab, Tindivanam-604001, India
(*) Corresponding Author

Abstract


TiO2-Fe3O4 nanocomposite loaded on a chitosan-nickel complex was synthesized and analyzed for its structural and optical properties using XRD, FTIR, SEM, and UV-vis spectroscopy. The XRD studies revealed that the synthesized sample is amorphous. The UV-vis absorption peaks confirmed the presence of TiO2 and Fe3O4 in the sample. The SEM results showed spherical morphology, with a particle size of 94.3 nm. The synthesized nanocomposite was investigated for photocatalytic degradation of three pharmaceutical drugs - diclofenac sodium, paracetamol, and tetracycline - under different light sources and varying pH conditions. The photocatalytic degradation experiments were carried out using the pharmaceutical drugs at a concentration of 200 mg L−1 and the synthesized nanocomposite at a dosage of 50 mg L−1. The findings reflect that in an acidic environment, diclofenac sodium degraded most effectively when exposed to UV radiation. Under visible light, tetracycline degraded up to 87%, whereas paracetamol demonstrated a maximum degradation efficiency of 94%. All three drugs exhibited enhanced degradation in acidic pH, highlighting the significance of the nanocomposite for wastewater treatment applications.


Keywords


chitosan nickel complex; TiO2-Fe3O4-chitosan nanocomposite; medi-waste; visible light; photodegradation

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DOI: https://doi.org/10.22146/ijc.113907

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