Open AccessPhoto-catalytic degradation of bisphenol-a from aqueous solutions using GF/Fe-TiO2-CQD hybrid composite
Author(s) -
Ahmad Jonidi Jafari,
Roshanak Rezaei Kalantary,
Ali Esrafili,
Mehrdad Moslemzadeh
Publication year - 2021
Publication title -
journal of environmental health science and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
ISSN - 2052-336X
DOI - 10.1007/s40201-021-00651-8
Subject(s) - aqueous solution , bisphenol a , composite number , catalysis , photocatalysis , nuclear chemistry , bisphenol , degradation (telecommunications) , fourier transform infrared spectroscopy , materials science , central composite design , chemical engineering , bisphenol s , wastewater , chemistry , response surface methodology , waste management , chromatography , composite material , organic chemistry , epoxy , computer science , engineering , telecommunications
In this photocatalytic study, removal of bisphenol-A from aqueous solution was studied using the GF/Fe-TiO 2 -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-TiO 2 -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-TiO 2 from 2.96 eV to 2.91 eV, it was 3.10 eV for TiO 2 . Among different catalysts, GF/Fe-TiO 2 -CQD 4.5wt% has the best performance. The results showed that for GF/Fe-TiO 2 -CQD 4.5wt% , 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-TiO 2 -CQD 4.5wt% showed that it can be used many times with a minimal reduction in performance. As a result, the GF/Fe-TiO 2 -CQD 4.5wt% 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.