Synthesis of core/shell/shell Fe3O4/SiO2/ZnO nanostructure composite material with cubic magnetic cores and study of the photo-degradation ability of methylene blue

Ghasemy-Piranloo, Fardin; Bavarsiha, Fatemeh; Dadashian, Saeideh; Rajabi, Masoud

doi:10.1007/s41779-019-00359-x

Cited by 17 publications

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“…In fact, magnetic particles can be used as cores, and coatings of titanium oxide on these particles can act as shells. By using this technique, control and gathering of these composite photo-catalysts can be achievable by the help of an external magnetic field [3,18].…”

Section: Introductionmentioning

confidence: 99%

Comparison of the structural and photo-catalytic properties of nanostructured Fe3O4/TiO2 core-shell composites synthesized by ultrasonic and Stöber methods

et al. 2020

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In the present research, Fe3O4/TiO2 magnetic photo-catalytic nanocomposites with a core/shell structure were successfully synthesized using two techniques of ultrasonic and St?ber. In this way, iron oxide (II, III) nanoparticles as soft magnetic cores of this composite were prepared by utilizing a chemical method assisted by ultrasound with a Fe+3/Fe+2 molar ratio of 1.5 under the nitrogen atmosphere. Thereafter, titanium oxide coating was performed on Fe3O4 nanoparticles by using tetrabutyl orthotitanate (TBOT) and titanium isopropoxide (TTIP) precursors. The resultant nanostructures were characterized by means of X-ray powder diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, energy dispersive X-ray (EDX) analysis, vibrating sample magnetometer (VSM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Through findings obtained from TEM examinations, the formation of core/shell nanostructure was confirmed in the prepared Fe3O4/TiO2 composites. Analysis of magnetic properties revealed that titanium oxide coating on iron oxide nanoparticles reduces saturation magnetization (Ms). The values of saturation magnetization for Fe3O4 powder and Fe3O4/TiO2 nanocomposite powders achieved via ultrasonic and St?ber methods were 60, 23 and 9 emu/g, respectively. Photo-catalytic properties of Fe3O4/TiO2 nanostructures were evaluated by the use of methylene blue dye under UV light. Results indicated that Fe3O4/TiO2 composite obtained by the St?ber method has a better photo-catalytic property as well as a decreased but acceptable magnetic separation. Degradation of methylene blue dye in the presence of photo-catalytic powder prepared by ultrasonic and St?ber procedures was 61 and 69 %, respectively, within 90 minutes of UV light exposure.

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Section: Introductionmentioning

confidence: 99%

Comparison of the structural and photo-catalytic properties of nanostructured Fe3O4/TiO2 core-shell composites synthesized by ultrasonic and Stöber methods

et al. 2020

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Synthesis, Characterization, and Photocatalytic Activity of Magnetically Separable Fe₃O₄@SiO₂@ZnO–Ag Composite Photocatalyst

Kiziltas,

Tekin,

Birhan

et al. 2024

Global Challenges

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Magnetically separable Fe3O4, Fe3O4@SiO2, Fe3O4@SiO2@ZnO, and Fe3O4@SiO2@ZnO–Ag composites are synthesized using hydrothermal and wet chemistry methods. The samples obtained are characterized in terms of morphology, composition, optical, and magnetic properties using TEM, SEM‐EDS, XRD, FTIR, VSM, XPS, and UV–vis, and the photodegradation of Acid Blue 161 dye under UV irradiation is investigated. As a result of SEM and TEM analyses, the diameters of Fe3O4, Fe3O4@SiO2, Fe3O4@SiO2@ZnO, and Fe3O4@SiO2@ZnO–Ag composites are determined as 210, 220, 230 and 235 nm, respectively. The magnetic properties of the samples are determined by VSM analysis. In VSM analyses, magnetization saturation values of Fe3O4, Fe3O4@SiO2, Fe3O4@SiO2@ZnO, and Fe3O4@SiO2@ZnO–Ag composites are determined as 81, 64, 41 and 20 emus × g−1, respectively. In XRD analysis, the face‐centered cubic structure of Fe3O4 particles and the hexagonal wurtzite structure of ZnO are determined and it is determined that they are compatible with standard diffraction cards. According to UV–Vis analysis, Eg values for Fe3O4, Fe3O4@SiO2, Fe3O4@SiO2@ZnO, and Fe3O4@SiO2@ZnO–Ag composites are found as 1.3, 1.68, 2.21, and 2.15 eV, respectively. Among the photocatalysts prepared, Fe3O4@SiO2@ZnO–Ag composite Acid Blue 161 shows superior removal and recyclability against photodegradation of the dyestuff.

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Fe3O4/SiO2/TiO2–Ag cubes with core/shell/shell nano-structure: synthesis, characterization and efficient photo-catalytic for phenol degradation

Ghasemy-Piranloo¹,

Dadashian²,

Bavarsiha³

2019

J Mater Sci: Mater Electron

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Synthesis of core/shell/shell Fe3O4/SiO2/ZnO nanostructure composite material with cubic magnetic cores and study of the photo-degradation ability of methylene blue

Cited by 17 publications

References 45 publications

Comparison of the structural and photo-catalytic properties of nanostructured Fe3O4/TiO2 core-shell composites synthesized by ultrasonic and Stöber methods

Comparison of the structural and photo-catalytic properties of nanostructured Fe3O4/TiO2 core-shell composites synthesized by ultrasonic and Stöber methods

Synthesis, Characterization, and Photocatalytic Activity of Magnetically Separable Fe₃O₄@SiO₂@ZnO–Ag Composite Photocatalyst

Fe3O4/SiO2/TiO2–Ag cubes with core/shell/shell nano-structure: synthesis, characterization and efficient photo-catalytic for phenol degradation

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Synthesis of core/shell/shell Fe3O4/SiO2/ZnO nanostructure composite material with cubic magnetic cores and study of the photo-degradation ability of methylene blue

Cited by 17 publications

References 45 publications

Comparison of the structural and photo-catalytic properties of nanostructured Fe3O4/TiO2 core-shell composites synthesized by ultrasonic and Stöber methods

Comparison of the structural and photo-catalytic properties of nanostructured Fe3O4/TiO2 core-shell composites synthesized by ultrasonic and Stöber methods

Synthesis, Characterization, and Photocatalytic Activity of Magnetically Separable Fe3O4@SiO2@ZnO–Ag Composite Photocatalyst

Fe3O4/SiO2/TiO2–Ag cubes with core/shell/shell nano-structure: synthesis, characterization and efficient photo-catalytic for phenol degradation

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Synthesis, Characterization, and Photocatalytic Activity of Magnetically Separable Fe₃O₄@SiO₂@ZnO–Ag Composite Photocatalyst