Abstract
Antibiotics as emerging pharmaceutical pollutants have been caused environmental problems. In this work, photoelectrocatalytic (PEC) process was investigated for degradation of cefixime antibiotic from aqueous solution by Ce–ZnO/MoS2/Ti electrode. The MoS2 sheets and Ce–ZnO particles were synthesized respectively by the hydrothermal and sonochemical methods and then simultaneously immobilized on the surface of a titanium sheet using the electrophoretic deposition method. The prepared bifacial Ce–ZnO/MoS2/Ti electrode was characterized using field emission scanning electron microscopy, energy-dispersive spectrum, X-ray diffraction and diffuse reflectance spectroscopy. Taguchi method of experimental design was used for the optimization of the PEC process and determine the relevant importance of investigated operating variables, including catalyst amount (number of electrodes), pH of the solution, applied bias potential, visible-light power and electrolyte (Na2SO4) concentration. The highest cefixime degradation efficiency using the PEC was achieved at a bias potential of 0.9 V, pH of 3, visible-light power of 72 W and Na2SO4 concentration of 35 mM within 120 min reaction time. According to the result of Taguchi, pH is the most influential variable among the investigated variables.
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The authors gratefully acknowledges the financial support of Kharazmi University.
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PM contributed to investigation, data curation and writing. MS was involved in conceptualization, supervision and writing—review and editing. BA-F contributed to methodology and writing—review and editing. FK was involved in investigation.
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Moharramkhani, P., Sheydaei, M., Ayoubi-Feiz, B. et al. Visible-light photoelectrocatalytic properties of bifacial immobilized Ce–ZnO/MoS2/Ti electrode in degradation of cefixime: Taguchi optimization method. J IRAN CHEM SOC 19, 2769–2778 (2022). https://doi.org/10.1007/s13738-022-02498-8
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DOI: https://doi.org/10.1007/s13738-022-02498-8