Heterogeneous Fenton degradation of bisphenol A using Fe3O4@β-CD/rGO composite: Synergistic effect, principle and way of degradation

Zhang, Yimei; Chen, Zhuang; Zhou, Lincheng; Wu, Panpan; Zhao, Yuan; Lai, Yuxian; Wang, Fei

doi:10.1016/j.envpol.2018.10.028

Cited by 77 publications

(24 citation statements)

References 54 publications

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“…As is well-known, BPA is stable in an aqueous solution and is refractory to degradation because it consists of two benzene rings in a symmetrical structure. Thus, it is very urgent and significant to develop effective processes for BPA removal from water (Ye et al, 2019;Zhang et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Porous ZnO Nanoparticles Efficient for Photocatalytic Degradation of Biomass-Derived Bisphenol A Under Simulated Sunlight Irradiation

Wang

Kang

Yang

et al. 2021

Front. Bioeng. Biotechnol.

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Bisphenol A (BPA) produced from biomass is a typical endocrine disrupting compound that is carcinogenic and genotoxic and can be accumulated in water due to its extensive use and difficult degradation. In this study, the porous ZnO photocatalyst with core-shell structure and large surface area was successfully developed for the efficient photocatalytic degradation of BPA. The various effects of calcination temperatures, BPA concentrations, ZnO dosages, pH and inorganic ions on the degradation performance were systemically studied. The results showed that 99% degradation of BPA was achieved in 1 h using the porous ZnO calcined at 550°C under the conditions of 30 mg/L BPA, 1 g/L ZnO, and pH of 6.5. Besides, the inhibition effects of anions for the photocatalytic removal of BPA decreased in the order of H2PO4- > HCO3- > SO42- > Cl−, while the cations K+, Ca2+, and Na+ had little effect on the photocatalytic degradation of BPA. The results of scavenging experiments showed that h+, ·O2-, and e− played the key role in the photocatalytic degradation process. Finally, the main pathways of BPA degradation were proposed based on ten intermediates found in the degradation process. This work may provide a good guideline to degrade various endocrine disrupting compounds in wastewater treatment.

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Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Porous ZnO Nanoparticles Efficient for Photocatalytic Degradation of Biomass-Derived Bisphenol A Under Simulated Sunlight Irradiation

Wang

Kang

Yang

et al. 2021

Front. Bioeng. Biotechnol.

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“…OOH (equation 13) and recycling of Fe (III)/ Fe (II) was very important in this reaction The generated Fe (II) reacted with H2O2 to give . OH (equation 14) [87]. This reaction rate was slow because of low conversion of Fe (III) to Fe (II) and it inhibited .…”

Section: Mechanism Of Photocatalytic Degradationmentioning

confidence: 99%

Green Synthesis of Iron Oxide Nanoparticles to Explore Cytotoxic Behaviour and to Diminish Environmental Pollution by a Novel Contrivance

2021

JCBSC

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To overcome the side effects of conventional chemotherapy, the study of effective anticancer application of magnetic iron oxide nanoparticles is now-a-days a great area of research which is increasing day by day. In our present study, Iron oxide nanoparticles (IONPs) have been synthesised by reducing ferrous sulphate using Punica granatum peel extracts. Punica granatum peel extract has a rich source of flavonoids and phenolic compounds with high antioxidant and these molecules can be used as excellent reducing agents. The nanopowders have been calcined at 700 0 C for 4 hours. Physicochemical, optical, photocatalytic, cytotoxicity activities (both in normal and carcinoma cell) and morphological assessment of carcinoma cells are characterised using analytical techniques. XRD data, DLS, FTIR spectra and Scanning electron microscope analysis have confirmed the formation of IONPs having spherical shape with trigonal (rhombohedral axes) phase structure, smaller size (average size from XRD 43-47 nm) and large surface area. From UV-Vis absorption spectra and Tauc plot the optical band gap has been obtained 3.5 e.V. IONPs show good photo-Fenton in Methylene blue (MB) dye degradation within 15 minutes with ~91% and 40 minutes with 99% for under optimum condition. The cytotoxicity in Human hepatic cell line (WRL-68) and human hepatocellular carcinoma (HUH-7) cell lines have also been observed using MTT assay and verified Green Synthesis … Shatarupa Basak et al.

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“…Moreover, another type of potential heterogeneous catalyst that has gained attention involved the immobilization of Fe 3 O 4 on inorganic or organic solid supports [17]. Although such immobilization prevents agglomeration and enhances the dispersibility of Fe 3 O 4 , the choice of appropriate support is critical [18].…”

Section: Introductionmentioning

confidence: 99%

Fenton Degradation of Ofloxacin Using a Montmorillonite–Fe3O4 Composite

Ahmad

Imam

et al. 2021

Catalysts

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In this work, FeM composites consisting of montmorillonite and variable amounts of Fe3O4 were successfully synthesized via a facile co-precipitation process. They were characterized using X-ray photoelectron spectroscopy (XPS), a field emission scanning electron microscope (FESEM), energy-dispersive X-ray spectroscopy (EDX), a transmission electron microscope (TEM), N2 adsorption–desorption, and Fourier transform infrared spectroscopy (FTIR) techniques to explain the effect of Fe3O4 content on the physicochemical properties of the Fe3O4–montmorillonite (FeM) composites. The FeM composites were subsequently used as heterogeneous Fenton catalysts to activate green oxidant (H2O2) for the subsequent degradation of ofloxacin (OFL) antibiotic. The efficiency of the FeM composites was studied by varying various parameters of Fe3O4 loading on montmorillonite, catalyst dosage, initial solution pH, initial OFL concentration, different oxidants, H2O2 dosage, reaction temperature, inorganic salts, and solar irradiation. Under the conditions of 0.75 g/L FeM-10, 5 mL/L H2O2, and natural pH, almost 81% of 50 mg/L of OFL was degraded within 120 min in the dark, while total organic carbon (TOC) reduction was about 56%. Although FeM composites could be a promising heterogeneous catalyst for the activation of H2O2 to degrade organic pollutants, including OFL antibiotic, the FeM-10 composite shows a significant drop in efficiency after five cycles, which indicates that more studies to improve this weakness should be conducted.

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Heterogeneous Fenton degradation of bisphenol A using Fe3O4@β-CD/rGO composite: Synergistic effect, principle and way of degradation

Cited by 77 publications

References 54 publications

Facile Synthesis of Porous ZnO Nanoparticles Efficient for Photocatalytic Degradation of Biomass-Derived Bisphenol A Under Simulated Sunlight Irradiation

Facile Synthesis of Porous ZnO Nanoparticles Efficient for Photocatalytic Degradation of Biomass-Derived Bisphenol A Under Simulated Sunlight Irradiation

Green Synthesis of Iron Oxide Nanoparticles to Explore Cytotoxic Behaviour and to Diminish Environmental Pollution by a Novel Contrivance

Fenton Degradation of Ofloxacin Using a Montmorillonite–Fe3O4 Composite

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