Recoverable magnetic CoFe2O4/BiOI nanofibers for efficient visible light photocatalysis

Chang, Meng-Jie; Cui, Wen-Na; Wang, Hua; Liu, Jun; Li, Hui Lu; Du, Huiling; Peng, Long

doi:10.1016/j.colsurfa.2018.11.016

Cited by 46 publications

(9 citation statements)

References 34 publications

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“…After 10 hours to reach free space temperature was placed in the environment. The nal product was washed several times with ethanol to remove impurities [17].…”

Section: Synthesis Of Cfo/bioi Hybrid Nano Ber By Solvothermal Methodsmentioning

confidence: 99%

WITHDRAWN: Synthesis of CoFe 2 O 4 /BiOI Nanocomposite: Effects on Staphylococcus aureus, Escherichia coli, Pseudomonas Aeruginosa and Bacillus Cereus

Gheidari¹,

Mehrdad²,

Maleki³

et al. 2021

Preprint

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With the increase of general knowledge and the advancement of science and technology, antibacterial substances were used more than antibiotics. In our current study, the antibacterial virtues of CFO/BiOI nanocomposite were investigated due to its high importance on Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa and Bacillus cereus. MIC, MBC , Disk Diffusion and IC50 tests Cefalotin (CF), Amoxicillin (AMX), Gentamicin (GM), Trimethoprim-sulphamethoxazole (SXT) and Ceftriaxone (CRO) antibiotics in concentration 30W, 10i, 10t , 25h and 30 were used to find the antibacterial properties of the synthesized nanocomposite, respectively. For the synthesis of nanocomposites polyethylene glycol (PEG) and sulfonic acid was used as a solvent. It is noteworthy that the synthesis was performed by heat dissolution method without the presence of surfactant. Also, various techniques such as X-Ray Diffraction(XRD), Scanning Electron Microscope (SEM), High resolution mapping and Energy Dispersive X-ray spectroscopy (EDAX) have been used to determine the properties of produced nanocomposites. SEM test results showed that the formed nanoparticles were globular and their size was limited area of 22 to 34 nm. The results showed CFO / BiOI nanocomposite exhibits strong significant biological activity against Bacillus cereus. The results of MBC (Minimum Bactericidal Concentration) and MIC (Minimum Inhibition Concentration) tests for CFO/BiOI nanocomposites on bacteria were examined in the range of 0.12-0.48 mg/ml and 0.06 to 0.24 mg/ml respectively. According to the results, the minimum IC50 value was determined at a concentration of 0.061 mg/ml. On the other hand, the most resisting and susceptible bacteria in this method were Pseudomonas aeruginosa and Bacillus cereus, respectively. These findings are identical to those of a prior study on CoFe2O4 nanoparticles antibacterial properties. MBC of the nanocomposites, 50 µl from all the tubes that showed no obvious bacterial growth were distributed on BHI agar plates and incubated for 24 h at 37 ◦C. The MBC endpoint is defined as the lowest concentration which killed 98% of the bacterial population.

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“…After 10 hours to reach free space temperature was placed in the environment. The nal product was washed several times with ethanol to remove impurities [17].…”

Section: Synthesis Of Cfo/bioi Hybrid Nano Ber By Solvothermal Methodsmentioning

confidence: 99%

WITHDRAWN: Synthesis of CoFe 2 O 4 /BiOI Nanocomposite: Effects on Staphylococcus aureus, Escherichia coli, Pseudomonas Aeruginosa and Bacillus Cereus

Gheidari¹,

Mehrdad²,

Maleki³

et al. 2021

Preprint

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“…The degradation properties of 5%, 10%, 15%, 20%, and 25% Mn x Zn 1−x Fe 2 O 4 /Bi 5 O 7 I were 96.3%, 96.7%, 93.8%, 82.3%, and 72.7%, respectively. In addition, the first-order kinetics model given by equation ln( C 0 / C ) = kt was applied to quantitatively understand the reaction kinetics, where C 0 (mg·L −1 ) is the initial concentration of RhB solution, C (mg·L −1 ) is the concentration in aqueous solution at time t , and k (min −1 ) is the apparent first-order kinetic constant [36]. The degradation constants (in Figure 9b) were calculated to be 0.0284, 0.0252, 0.0274, 0.0217, 0.0138, and 0.0108 min −1 for pure Bi 5 O 7 I, and 5%, 10%, 15%, 20%, and 25% Mn x Zn 1−x Fe 2 O 4 /Bi 5 O 7 I samples, respectively.…”

Section: Resultsmentioning

confidence: 99%

Composite Magnetic Photocatalyst Bi5O7I/MnxZn1−xFe2O4: Hydrothermal-Roasting Preparation and Excellent Photocatalytic Activity

Wang

Liu

et al. 2019

Nanomaterials

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A new composite magnetic photocatalyst, Bi5O7I/MnxZn1−xFe2O4, prepared by a hydrothermal-roasting method was studied. The photocatalytic properties of Bi5O7I/MnxZn1−xFe2O4 were evaluated by degradation of Rhodamine B (RhB) under simulated sunlight irradiation, and the structures and properties were characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), ultraviolet-visible light (UV-Vis) diffuse reflectance spectra (DRS), and a vibrating sample magnetometer (VSM). The results indicated that Bi5O7I/MnxZn1−xFe2O4 was an orthorhombic crystal, which was similar to that observed for Bi5O7I. Bi5O7I/MnxZn1−xFe2O4 consisted of irregularly shaped nanosheets that were 40–60 nm thick. The most probable pore size was 24.1 nm and the specific surface area was 7.07 m2/g. Bi5O7I/MnxZn1−xFe2O4 could absorb both ultraviolet and visible light, and the energy gap value was 3.22 eV. The saturation magnetization, coercivity and residual magnetization of Bi5O7I/MnxZn1−xFe2O4 were 3.9 emu/g, 126.6 Oe, and 0.7 emu/g respectively, which could help Bi5O7I/MnxZn1−xFe2O4 be separated and recycled from wastewater under the action of an external magnetic field. The recycling experiments revealed that the average recovery rate of the photocatalyst was 90.1%, and the photocatalytic activity was still more than 81.1% after five cycles.

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“…These magnetic fibers showed high visible-light photocatalytic properties, degrading rhodamine B fast, could be re-used several times and collected in an external magnetic field after use. 94 Similarly, Chang et al 95 found Fe 2 O 3 /BiOI electrospun hollow nanofibers to show high catalytic performance even under visible light for rhodamine B decomposition. Good catalytic properties and cycle stability was also recognized for PVA/ poly(acrylic acid)/Fe 3 O 4 /MXene@Ag nanoparticle composites, produced by electrospinning, 96 as well as CuO-NiO/carbon nanofibers which were carbonized after electrospinning 97 and Bi 2 MoO 6 /ZnFe 2 O 4 heterojunction nanofibers which were tested by rhodamine B degradation.…”

Section: Removal and Decomposition Of Contaminantsmentioning

confidence: 97%

Most recent developments in electrospun magnetic nanofibers: A review

Błachowicz

Ehrmann

2020

Journal of Engineered Fibers and Fabrics

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One-dimensional materials, such as nanowires, nanotubes, or nanofibers, have attracted more and more attention recently due to their unique physical properties. Their large length-to-diameter ratio creates anisotropic material properties which could not be reached in bulk material. Especially one-dimensional magnetic structures are of high interest since the strong shape anisotropy reveals new magnetization reversal modes and possible applications. One possibility to create magnetic nanofibers in a relatively simple way is offered by electrospinning them from polymer solutions or melts with incorporated magnetic nanoparticles. This review gives an overview of most recent methods of electrospinning magnetic nanofibers, measuring their properties as well as possible applications from basic research to single-cell manipulation to microwave absorption.

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Recoverable magnetic CoFe2O4/BiOI nanofibers for efficient visible light photocatalysis

Cited by 46 publications

References 34 publications

WITHDRAWN: Synthesis of CoFe 2 O 4 /BiOI Nanocomposite: Effects on Staphylococcus aureus, Escherichia coli, Pseudomonas Aeruginosa and Bacillus Cereus

WITHDRAWN: Synthesis of CoFe 2 O 4 /BiOI Nanocomposite: Effects on Staphylococcus aureus, Escherichia coli, Pseudomonas Aeruginosa and Bacillus Cereus

Composite Magnetic Photocatalyst Bi5O7I/MnxZn1−xFe2O4: Hydrothermal-Roasting Preparation and Excellent Photocatalytic Activity

Most recent developments in electrospun magnetic nanofibers: A review

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