Preparation of highly efficient and magnetically recyclable Fe3O4@C@Ru nanocomposite for the photocatalytic degradation of methylene blue in visible light

Zhang, Qi; Yu, Liangyun; Xu, Chenchen; Zhao, Jianing; Pan, Haiyang; Chen, Ming; Xu, Qingping; Diao, Guowang

doi:10.1016/j.apsusc.2019.03.225

Cited by 38 publications

(7 citation statements)

References 53 publications

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“…To minimize oxidation, M 2+ elements with the content below 0.15 have been doped into Fe 3 O 4 to reduce the possibility of oxidization 1,5,9) of Fe 2+ to Fe 3+ and thus stabilize and improve the chemical and physical properties of the resulting material. 6,[8][9][10]13) Due to the wide range of applicability of magnetic nanoparticles in numerous fields (medicine, 14,15) environmental pollution treatment, [15][16][17] photocatalysis 18) and various technological fields), scientists are focusing on research in two directions: (i) improving the physical and chemical properties of magnetic nanoparticles and (ii) studying composite materials based on combinations of inorganic or organic materials for application purposes.…”

Section: Introductionmentioning

confidence: 99%

Effect of Zn nonmagnetic element doping and a polyvinyl pyrrolidone shell layer on the superparamagnetism and stability properties of magnetic nanoparticles

Thi¹,

Trung²,

Tung³

et al. 2021

Jpn. J. Appl. Phys.

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Zn x Fe1−x Fe2O4 nanoparticles (x = 0.0–0.25) were synthesized by the coprecipitation method. Their microstructure was investigated by X-ray diffraction with Rietveld refinement software, energy-dispersive X-ray spectroscopy, transmission electron microscopy, and Fourier transform infrared absorption spectroscopy. Their thermal, magnetic properties were investigated by thermogravimetric analysis and vibrating-sample magnetometer. The nanoparticles exhibited superparamagnetic properties, with a maximum saturation magnetization of 80.2 emu g−1 in H = 11 000 Oe at room temperature for sample with x = 0.20. The Zn nonmagnetic element content is related to the cation distribution in the superlattices and magnetic moment of the particles. The Zn0.15Fe0.85Fe2O4 nanoparticles were coated with polyvinyl pyrrolidone (PVP) with different PVP mass. Their core–shell structure was investigated, the results showed that their chemical stability and saturation magnetization were greater than those of pure Fe3O4. PVP has biological compatibility; thus, Fe0.85Zn0.15Fe2O4/PVP0.75 nanocomposite has the potential to be widely used in medical biology, science and technology.

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Section: Introductionmentioning

confidence: 99%

Effect of Zn nonmagnetic element doping and a polyvinyl pyrrolidone shell layer on the superparamagnetism and stability properties of magnetic nanoparticles

Thi¹,

Trung²,

Tung³

et al. 2021

Jpn. J. Appl. Phys.

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“…The typical PD ratio of an MB solution can be calculated from the OA intensity of the MB dye at its characteristic absorption energy, E max = 1.92 eV. 21 Figure 2b illustrates the OA spectra of the MB in both samples after 4 h of exposure to UV radiation (E UV ∼ 3.4 eV). The data demonstrate the PD effects in the OA spectrum of both the Co 2+ /ZnO NWs and the bare ZnO NWs, as indicated by the reduced OA intensity.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…We employed MB dye to test the PD of organic pollutants near the bare ZnO NWs and the Co 2+ -rich/ZnO NWs, respectively. The typical PD ratio of an MB solution can be calculated from the OA intensity of the MB dye at its characteristic absorption energy, E max = 1.92 eV Figure b illustrates the OA spectra of the MB in both samples after 4 h of exposure to UV radiation ( E UV ∼ 3.4 eV).…”

Section: Results and Discussionmentioning

confidence: 99%

Enhanced Photodegradation in Metal Oxide Nanowires with Co-Doped Surfaces under a Low Magnetic Field

Lin

Thaomonpun

Thongpool

et al. 2021

ACS Appl. Mater. Interfaces

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This work demonstrated the enhanced photodegradation (PD) resulting from Co-rich doping of ZnO nanowire (NW) surfaces (Co2+/ZnO NWs) prepared by combining Co sputtering on ZnO NWs and immersion in deionized water to exploit the hydrophilic–hydrophobic transitions on the ZnO surfaces resulting from Co atom diffusion. Because of the controllable spin-dependent density of states (DOS) induced by Co2+, the PD of methylene blue dye can be enhanced by approximately 90% (when compared with bare ZnO NWs) by using a conventional permanent magnet with a relatively low magnetic field strength of approximately 0.15 T. The reliability of spin polarization–modulation attained through surface doping, based on the magnetic response observed from X-ray absorption measurements and magnetic circular dichroism, provides an opportunity to create highly efficient catalysts by engineering surfaces and tailoring their spin-dependent DOS.

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“…MB can cause eye irritation in humans as well as in animals, allergy and cancer due to its toxicity [7]. If ingested the water containing MB, it will cause nausea, hard breathing, vomiting, methemoglobinemia, mental disorder and sweating [8,9]. Thus, it is necessary to develop new and cost-effective technologies to remove MB from wastewater.…”

Section: Introductionmentioning

confidence: 99%

Influence of Fe3O4 and CTABr on the Rate of Degradation of Methylene Blue by H2O2

et al. 2021

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Preparation of highly efficient and magnetically recyclable Fe3O4@C@Ru nanocomposite for the photocatalytic degradation of methylene blue in visible light

Cited by 38 publications

References 53 publications

Effect of Zn nonmagnetic element doping and a polyvinyl pyrrolidone shell layer on the superparamagnetism and stability properties of magnetic nanoparticles

Effect of Zn nonmagnetic element doping and a polyvinyl pyrrolidone shell layer on the superparamagnetism and stability properties of magnetic nanoparticles

Enhanced Photodegradation in Metal Oxide Nanowires with Co-Doped Surfaces under a Low Magnetic Field

Influence of Fe3O4 and CTABr on the Rate of Degradation of Methylene Blue by H2O2

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