Synthesis of MoS2/MnFe2O4 nanocomposite with highly efficient catalytic performance in visible light photo-Fenton-like process

• Published in: Journal of photochemistry and photobiology. A, Chemistry. Chemistry., 2018-12, Vol.367, p.420-428
• Main Authors: Samakchi, Soha, Chaibakhsh, Naz, Moradi-Shoeili, Zeinab
• Format: Article
• Language: English
• Subjects: Acid blue 113; MoS2/MnFe2O4; Nanocomposite; Photo-Fenton-like process; Substituted ferrite; Visible light
• ISSN: 1010-6030; 1873-2666
• DOI: 10.1016/j.jphotochem.2018.09.003

[Display omitted] •A new combined Fenton-like/visible light photocatalyst is prepared.•MoS2/MnFe2O4 nanocomposite is found to be an efficient catalyst with high activity.•Degradation of AB113 dye enhances in the photo-Fenton-like system.•Maximum dye degradation is achieved using low catalyst and H2O2 doses. The novel flower-like MoS2/MnFe2O4 nanocomposite was successfully prepared through a hydrothermal route using molybdenum disulfide nanospheres and magnetic spinel manganese ferrite as the raw materials. The synergistic effect of Fenton-like and visible light photocatalysis was observed through the degradation of a recalcitrant diazo dye, Acid Blue 113. Analysis of the process using response surface methodology (RSM) revealed that the data were well fitted to a quadratic model with R-squared close to unity. At the optimal conditions of pH 6.3, 0.6 ml H2O2, 6.59 mg catalyst and 42 min, >99% of the dye was removed. Degradation of the dye by visible light assisted Fenton-like process was well described by a pseudo-first-order kinetic model. Excellent catalytic performance, easy preparation and reusability of the fabricated nanocomposite makes it a highly efficient catalyst for the degradation of recalcitrant organic pollutants.