Photo-catalytic degradation of bisphenol-a from aqueous solutions using GF/Fe-TiO2-CQD hybrid composite


In this photocatalytic study, removal of bisphenol-A from aqueous solution was studied using the GF/Fe-TiO2-CQD composite. Due to its health and environmental effects, this compound should be disposed of sources that are mainly industrial wastewater. The phis-chemical properties of the composite were determined by traditional analyzes of EF-SEM, EDX, BET, XRD, FTIR and DRS. In this study, different ratios of CQD in the composite (1.5, 4.5 and 7.5 wt%), pH, and bisphenol-A concentration as variable parameters were investigated. All analyzes, EF-SEM, EDX, BET, XRD, FTIR, show that the GF/Fe-TiO2-CQD composite is well coated on glass fibers (GF) and all the elements in the catalyst are present. On the other hand, DRS analysis showed that CQD reduces the band gap of Fe-TiO2 from 2.96 eV to 2.91 eV, it was 3.10 eV for TiO2. Among different catalysts, GF/Fe-TiO2-CQD4.5wt% has the best performance. The results showed that for GF/Fe-TiO2-CQD4.5wt%, optimum for the process was at pH = 6 in low concentration of bisphenol-A. The first order model for the photocatalytic degradation process were well studied. In addition, GF/Fe-TiO2-CQD4.5wt% showed that it can be used many times with a minimal reduction in performance. As a result, the GF/Fe-TiO2-CQD4.5wt% composite can successfully remove bisphenol-A form in synthetic aqueous solution. However, it is necessary to further studies to applied that for real water source in water and wastewater treatment plants.

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The present study was adapted from the PhD thesis of Mehrdad Moslemzadeh at Iran University of Medical Sciences.

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The present project was financially funded by grant number 98–4–2-16,676 from Iran University of Medical Sciences.

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Ahmad Jonidi Jafari: Investigation, Writing - original draft Writing – review & editing.

Roshanak Rezaei Kalantary; Ali Esrafili: Writing – review & editing.

Mehrdad Moslemzadeh: Supervision, Writing – review & editing.

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Correspondence to Mehrdad Moslemzadeh.

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Jafari, A.J., Kalantary, R.R., Esrafili, A. et al. Photo-catalytic degradation of bisphenol-a from aqueous solutions using GF/Fe-TiO2-CQD hybrid composite. J Environ Health Sci Engineer (2021).

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  • Photo-catalytic
  • Bisphenol-a (BPA)
  • Glass Fiber, Fe-TiO2, carbon quantum dot