Facile synthesis of Fe3O4/CuO a core-shell heterostructure for the enhancement of photocatalytic activity under visible light irradiation

Benabbas, Khaled; Zabat, Nacéra; Hocini, Imene

doi:10.1007/s11356-020-10749-5

Cited by 19 publications

(2 citation statements)

References 85 publications

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“…The crystalline phases of the synthesized CuO/C, Fe 3 O 4 , and Fe 3 O 4 /CuO/C were confirmed using X-ray diffraction analysis, and the results are presented in Figure 1. For CuO/C (Figure 1a), the diffraction peaks were observed at 2θ = 32.5 (110), 35 [47]. In addition, there are no impure peaks, indicating that the cornstalk's natural carbon components have been destroyed.…”

Section: X-ray Diffraction (Xrd) Analysismentioning

confidence: 99%

“…The broadband at around 3313.31 cm −1 is due to stretching O-H molecules present in the CuO/C [53]. The spectrum of Fe 3 O 4 /CuO/C consists of the prominent bands of 581, 675, 1631, and 3500-3100 cm −1 corresponding to Fe-O of Fe 3 O 4 , Cu-O of CuO, C-H of bio-templated CuO, and O-H of inherent and adsorbed water molecules, respectively[47,53]. Thus, the formation of Fe 3 O 4 /CuO/C composite is also confirmed from the FTIR analysis.…”

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confidence: 99%

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Visible-Light-Driven Bio-Templated Magnetic Copper Oxide Composite for Heterogeneous Photo-Fenton Degradation of Tetracycline

Alani

Ari

Alani³

et al. 2021

Water

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The development of a visible-light-driven, reusable, and long-lasting catalyst for the heterogeneous photo-Fenton process is critical for practical application in the treatment of contaminated water. This study focuses on synthesizing a visible-light-driven heterogenous bio-templated magnetic copper oxide composite (Fe3O4/CuO/C) by a two-step process of bio-templating and hydrothermal processes. The prepared composite was characterized by field emission-scanning electron microscope (FE-SEM), Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), electrical impedance spectroscopy (EIS), and vibrating sample magnetometer (VSM). The results reveal that the prepared composite retains the template’s (corn stalk’s) original porous morphology, and a substantial amount of CuO and Fe3O4 particles are loaded onto the surface of the template. The prepared Fe3O4/CuO/C composite was employed as a catalyst for heterogeneous photo-Fenton degradation of tetracycline (TC) irradiated by visible light. The prepared Fe3O4/CuO/C catalyst has high efficiency towards TC degradation within 60 min across a wide pH range irradiated by visible light, which is attributed to its readily available interfacial boundaries, which significantly improves the movement of photoexcited electrons across various components of the prepared composite. The influence of other parameters such as initial H2O2 concentration, initial concentration of TC, and catalyst dosages was also studied. In addition to high efficiency, the prepared catalyst’s performance was sustained after five cycles, and its recovery is aided by the use of an external magnetic field. This research paper highlights the development of a heterogeneous catalyst for the elimination of refractory organic compounds in wastewater.

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Section: X-ray Diffraction (Xrd) Analysismentioning

confidence: 99%

mentioning

confidence: 99%

Visible-Light-Driven Bio-Templated Magnetic Copper Oxide Composite for Heterogeneous Photo-Fenton Degradation of Tetracycline

Alani

Ari

Alani³

et al. 2021

Water

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Tetracycline degradation by efficient synergistic bio-templated CuO photocatalysis and Fenton hybrid process irradiated by visible light: influential parameters, and mechanisms

Alani

Alani²,

Ari

et al. 2022

J Mater Sci: Mater Electron

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Study on the degradation mechanism of 2-amino-4-acetaminoanisole from wastewater by nano-Fe3O4-catalyzed Fenton system

Liu

Zhang

Chen

et al. 2022

Environ Sci Pollut Res

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Wide use of 2-Amino-4-Acetaminoanisole (AMA) as a coupling component in the synthesis of many commercial dyes leads to the generation of AMA dyed wastewater. Discharge of untreated AMA dyed wastewater could bring environmental concerns. The present study featured H 2 O 2 heterogeneous Fenton system to degrade 2-Amino-4-Acetaminoanisole from wastewater using nano-Fe 3 O 4 catalyst prepared via the co-precipitation method. Based on a single factor and taking the AMA removal rate as the response value, the Box-Benhnken (BBD) response surface method was used to investigate the individual effects of Fe 3 O 4 dosage, H 2 O 2 dosage, initial pH, and reaction time. For the interaction study, the experimental data were processed with Design-Expert 10.0 software to obtain a quadratic response surface model. The results showed that the order of the in uence of the four independent variables on the response value is as follows: nano-Fe 3 O 4 dosage > H 2 O 2 dosage > reaction time > pH. The obtained mathematical model exhibited a high degree of t with the maximum AMA removal e ciency reaching to 100%. The optimal reaction conditions considered in this study are 1.70 g/L of Nano-Fe 3 O 4 dosage, 53.52 mmol/L of H 2 O 2 dosage, pH 5.14 and 388.97 mins as system reaction time. Furthermore, HPLC-MS was employed to analyze the degradation mechanism of AMA and the reaction intermediate products. Findings of this research provides fundamental theory and could guide subsequent practical AMA treatment during wastewater treatment.

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Facile synthesis of Fe3O4/CuO a core-shell heterostructure for the enhancement of photocatalytic activity under visible light irradiation

Cited by 19 publications

References 85 publications

Visible-Light-Driven Bio-Templated Magnetic Copper Oxide Composite for Heterogeneous Photo-Fenton Degradation of Tetracycline

Visible-Light-Driven Bio-Templated Magnetic Copper Oxide Composite for Heterogeneous Photo-Fenton Degradation of Tetracycline

Tetracycline degradation by efficient synergistic bio-templated CuO photocatalysis and Fenton hybrid process irradiated by visible light: influential parameters, and mechanisms

Study on the degradation mechanism of 2-amino-4-acetaminoanisole from wastewater by nano-Fe3O4-catalyzed Fenton system

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