Fabrication of Fe3O4/ZnO magnetite core shell and its application in photocatalysis using sunlight

Atla, Shashi B.; Lin, Wun-Rong; Chien, Ting-Che; Tseng, Min‐Jen; Shu, Jinian; Chen, Chien‐Cheng; Chen, Chien‐Yen

doi:10.1016/j.matchemphys.2018.06.020

Cited by 66 publications

(26 citation statements)

References 24 publications

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“…The presence of magnetite, a mixed valent Fe mineral, introduces the magnetic character in the photocatalyst that ensures a convenient recovery (with an external magnetic field) for reuse in repeated photocatalysis cycles (Usman et al 2018). Owing to this desirable feature, use of magnetite with ZnO has also been suggested elsewhere (Wang et al 2018a;Atla et al 2018). For example, Atla et al (2018) developed different photocatalysts using ZnO and magnetite including ZnO/Fe 3 O 4 (M1), ZnO/ SiO 2 /Fe 3 O 4 (M2) and ZnO/APTS-SiO 2 /Fe 3 O 4 (M3).…”

Section: Zno-based Doped Photocatalystsmentioning

confidence: 99%

“…Owing to this desirable feature, use of magnetite with ZnO has also been suggested elsewhere (Wang et al 2018a;Atla et al 2018). For example, Atla et al (2018) developed different photocatalysts using ZnO and magnetite including ZnO/Fe 3 O 4 (M1), ZnO/ SiO 2 /Fe 3 O 4 (M2) and ZnO/APTS-SiO 2 /Fe 3 O 4 (M3). All these materials were magnetically separable, but their photocatalytic Fig.…”

Section: Zno-based Doped Photocatalystsmentioning

confidence: 99%

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Fabrication, functionalization and performance of doped photocatalysts for dye degradation and mineralization: a review

et al. 2020

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Textile wastewaters contain refractory dyes that cause pollution and socioeconomic issues, thus calling for efficient remediation techniques such as photocatalysis. We review the fabrication, functionalization, performance and limitations of doped catalysts for degrading and mineralizing dyes. We present developments in photocatalyst immobilization and photocatalytic reactor design. Methods such as microwave irradiation, sonication and use of ionic liquids are emerging for the preparation of doped photocatalysts. Whilst single-dye systems have been extensively studied, there is limited knowledge on multipledye systems. Immobilization of photocatalysts is gaining popularity for large-scale application, but faces issues of erosion, corrosion, mechanical strength and structure integrity. Ecotoxicological studies are required in real environments to validate the potential applications of nanostructured doped photocatalysts.

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Section: Zno-based Doped Photocatalystsmentioning

confidence: 99%

Section: Zno-based Doped Photocatalystsmentioning

confidence: 99%

Fabrication, functionalization and performance of doped photocatalysts for dye degradation and mineralization: a review

et al. 2020

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“…Depending on doped metal, photocatalytic activity generally could be higher than pure ZnO; however, the addition of manganese nanoparticles (Mn NPs) decreases the photocatalytic properties of modified ZnO (Türkyılmaz et al 2017). Photocatalytic properties are also enhanced by metal oxide NPs (Atla et al 2018;Güy et al 2018;Andrade et al 2019). In this case, the addition of metal oxide particles could have two functions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Fe3O4/ZnO nanoparticles and their application for the photodegradation of anionic and cationic dyes

Długosz

Szostak

Krupiński

et al. 2020

Int. J. Environ. Sci. Technol.

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Multifunctional materials have become an important research subject in recent years. Zinc oxide nanoparticles (ZnO NP) deposited on iron oxide (Fe 3 O 4) allow to obtain material with photocatalytic and magnetic properties. The mass share of Fe 3 O 4 in the composite was 30%. Saturation magnetization for this sample was about 9.5 emu/g. The use of magnetic material allows to recover the photocatalyst after the photodegradation process and reuse it. The possibility of recovery of Fe 3 O 4 nanoparticles with a magnet was estimated at 94.80%, while the recovery of Fe 3 O 4 /ZnO achieved 83.91%. The effects of the type of dyes (Methylene Blue, Methyl Orange, Quinoline Yellow, Eriochromic Black T and Trypanic Blue) on their photodegradation efficiency in terms of molar mass of the dye, the solvent in which the processes were carried out and the type of dye charge were investigated. The photocatalytic material showed higher photodegradation activity of dyes while increasing their molar mass. ZnO NPs deposited on Fe 3 O 4 presented 95.61% photocatalytic efficiency against Trypan Blue and 63.02% against Methylene Blue. Increasing the surface area of the catalyst to 39 m 2 /g and the presence of micro-, meso-and macropores had a positive effect on the sorption process of dyes, especially those of larger sizes, allowing their degradation in the photodegradation process.

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“…This is mostly observed for the composite, suggesting that Fe atoms serve as recombination sites. From what is reported on the literature, 30 PL spectra for Fe 3 O 4 /ZnO are associated with defects caused during the synthetic conditions, which is why a few bands may be more prominent.…”

Section: Characterization Of Fe 3 O 4 Zno and Fe 3 O 4 /Zno Compositementioning

confidence: 75%

Hydroxyl Radical Generation by Recyclable Photocatalytic Fe₃O₄/ZnO Nanoparticles for Water Disinfection

Máynez-Navarro

Méndez‐Rojas

Flores-Cervantes

et al. 2020

Air, Soil and Water Research

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Advanced oxidation processes based on photocatalytic generation of •OH radicals have emerged as promising technologies for the removal of recalcitrant pollutants in water. However, their poor recyclability has reduced their potential large-scale application. Herein, a Fe3O4-embedded ZnO system has been prepared and its photocatalytic •OH radicals activity was evaluated by monitoring the photo-assisted bleaching of p-nitrosodimethylaniline ( pNDA). Water disinfection performance was determined by measuring Escherichia coli inactivation under different conditions. Bleaching of nearly 80% of the initial pNDA concentration after just 120 minutes under UV365nm irradiation was determined. Bacterial inactivation at different concentrations (0.1, 1.0, and 5.0 mg mL−1) of the Fe3O4/ZnO nanocomposite was determined, finding that the best performance was obtained at 0.1 mg mL−1 (90%) just after the first 30 minutes under UV irradiation. The materials are easily magnetically recovered and their performance evaluated after 3 consecutive cycles of reuse. These magnetic and photoactive nanocomposites showed improved performance and could be used for wastewater treatment or disinfection processes of water.

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Fabrication of Fe3O4/ZnO magnetite core shell and its application in photocatalysis using sunlight

Cited by 66 publications

References 24 publications

Fabrication, functionalization and performance of doped photocatalysts for dye degradation and mineralization: a review

Fabrication, functionalization and performance of doped photocatalysts for dye degradation and mineralization: a review

Synthesis of Fe3O4/ZnO nanoparticles and their application for the photodegradation of anionic and cationic dyes

Hydroxyl Radical Generation by Recyclable Photocatalytic Fe₃O₄/ZnO Nanoparticles for Water Disinfection

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Fabrication of Fe3O4/ZnO magnetite core shell and its application in photocatalysis using sunlight

Cited by 66 publications

References 24 publications

Fabrication, functionalization and performance of doped photocatalysts for dye degradation and mineralization: a review

Fabrication, functionalization and performance of doped photocatalysts for dye degradation and mineralization: a review

Synthesis of Fe3O4/ZnO nanoparticles and their application for the photodegradation of anionic and cationic dyes

Hydroxyl Radical Generation by Recyclable Photocatalytic Fe3O4/ZnO Nanoparticles for Water Disinfection

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Hydroxyl Radical Generation by Recyclable Photocatalytic Fe₃O₄/ZnO Nanoparticles for Water Disinfection