Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/82691
Title: A novel quasi-cubic CuFe2O4–Fe2O3 catalyst prepared at low temperature for enhanced oxidation of bisphenol A via peroxymonosulfate activation
Authors: Oh, Wen-Da
Dong, Zhili
Hu, Zhong-Ting
Lim, Teik-Thye
Keywords: DRNTU::Engineering::Environmental engineering::Water treatment
Issue Date: 2015
Source: Oh, W.-D., Dong, Z., Hu, Z.-T., & Lim, T.-T. (2015). A novel quasi-cubic CuFe2O4–Fe2O3 catalyst prepared at low temperature for enhanced oxidation of bisphenol A via peroxymonosulfate activation. Journal of Materials Chemistry A, 3(44), 22208-22217.
Series/Report no.: Journal of Materials Chemistry A
Abstract: A facile eco-friendly co-precipitation synthesis at low temperature was employed to fabricate CuFe2O4–Fe2O3 for the oxidation of bisphenol A (BPA) via peroxymonosulfate (PMS) activation. The formation mechanism of CuFe2O4–Fe2O3 at low temperature is proposed. The FESEM and BET characterization studies revealed that the CuFe2O4–Fe2O3 catalyst has a quasi-cubic morphology and specific surface area of 63 m2 g−1. The performance of CuFe2O4–Fe2O3 as a PMS activator was compared with those of other catalysts and the results indicated that the performance was in the following order: CuFe2O4–Fe2O3 > CuFe2O4 > CoFe2O4 > CuBi2O4 > CuAl2O4 > Fe2O3 > MnFe2O4. A kinetic model with mechanistic consideration of the influence of pH, PMS dosage and catalyst loading was developed to model the degradation of BPA. The intrinsic rate constant (ki) was obtained from the kinetic study. The relationship between the pseudo first-order rate constant and ki was established. The trend of ki revealed that increasing the catalyst loading decreased the BPA removal rate due to the initial preferential production of the weaker radical (i.e. SO5˙−) for BPA degradation and Fe2+ quenching of SO4˙− at higher catalyst loading. The influence of water matrix species (i.e. Cl−, NO3−, HCO3−, PO43− and humic acid) on the BPA degradation rate was also investigated. The CuFe2O4–Fe2O3 catalyst exhibited excellent stability and can be reused several times without significant deterioration in performance.
URI: https://hdl.handle.net/10356/82691
http://hdl.handle.net/10220/40269
ISSN: 2050-7488
DOI: 10.1039/C5TA06563A
Rights: © 2015 The Royal Society of Chemistry. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Materials Chemistry A, The Royal Society of Chemistry. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1039/C5TA06563A].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:CEE Journal Articles
MSE Journal Articles
NEWRI Journal Articles

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