Enhancement of heterogeneous photo-Fenton performance of core-shell structured boron-doped reduced graphene oxide wrapped magnetical Fe3O4 nanoparticles: Fe(II)/Fe(III) redox and mechanism

Liu, Chenrui; Liu, Yun; Dang, Zhi; Zeng, Shuai; Li, Chengcheng

doi:10.1016/j.apsusc.2020.148886

Cited by 46 publications

(8 citation statements)

References 75 publications

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“…Nano-Fe 3 O 4 exhibited a peak located at 217 cm −1 , which was ascribed to the specific A 1g vibration peak of Fe 3 O 4 . [16] This peak disappeared in PANi/nano-Fe 3 O 4 /GE, which further confirmed the existence of the hybridization onsite Fe 3 O 4 . In the spectra of PANi/nano-Fe 3 O 4 /GE, there existed five obvious characteristic peaks, 1164 cm −1 band attributed to the in-plane C-H bending of quinoid units, 1488 cm −1 band due to N=C=N stretching of the quinoid di-imine units.…”

Section: Resultssupporting

confidence: 56%

Multi‐Interfaces Regulated Polyaniline/Nano‐Fe₃O₄/Graphene Ternary Hybrids for Ultra‐Broadband Electromagnetic Absorption

Song

Chen

Gou

et al. 2022

Macro Materials & Eng

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Graphene‐based electromagnetic absorbing materials have attracted growing attention, due to their great absorption efficiency and light weight. One common design principle is to load magnetic particles onto graphene. However, the agglomeration of magnetic nanoparticles on the graphene sheets limits further improvement in their electromagnetic absorption performances. In this work, polyaniline/nano‐Fe3O4/graphene ternary hybrids with regulated multi‐interfaces are designed by simply adjusting the adding order of graphene. The dispersion of nano‐Fe3O4 on graphene and the interactions among the ternary interfaces are synchronously controlled, which are considered to be the key factors restricting the hybrids’ performances. The polyaniline/nano‐Fe3O4/graphene ternary composites show ultra‐broadband electromagnetic absorption, with the optimal reflection loss peak reaching −57.2 dB at 11.4 GHz, and the effective bandwidth achieves 13.2 GHz, covering 4.8–18 GHz. It is found that the well dispersion of nano‐Fe3O4 can enhance the overall ferromagnetism and magnetic losses, while the modulation of the multi‐interfaces can further ameliorate the interfacial and dipole polarization, synergistically making the ultra‐broadband electromagnetic absorption. This work provides areferencing path for the design of subsequent multi‐interfacing electromagnetic absorbing materials.

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Section: Resultssupporting

confidence: 56%

Multi‐Interfaces Regulated Polyaniline/Nano‐Fe₃O₄/Graphene Ternary Hybrids for Ultra‐Broadband Electromagnetic Absorption

Song

Chen

Gou

et al. 2022

Macro Materials & Eng

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“…01-076-1941 and 00-003-0863, suggesting the presence of TiO 2 (anatase) and Fe 3 O 4 (magnetite), respectively. The diffraction peaks at 17.93, 30.30, 35.92, 43.13, 57.13, and 63.13° are assigned to the face centered cubic Fe 3 O 4 (111), (220), (311), (400), (511), and (440) crystal planes, respectively . The diffraction peaks of Fe 2 O 3 and other impurities were not found, suggesting that only Fe 3 O 4 has been formed during the synthesis during which the exact Fe 2+ to Fe 3+ molar ratio was maintained.…”

Section: Resultsmentioning

confidence: 96%

“…53 (111), ( 220), (311), (400), (511), and (440) crystal planes, respectively. 61 The diffraction peaks of Fe 2 O 3 and other impurities were not found, suggesting that only Fe 3 O 4 has been formed during the synthesis during which the exact Fe 2+ to Fe 3+ molar ratio was maintained. The diffraction peaks at 25.20, 35.92, and 63.13°are attributed to ( 101), (105), and (204) crystalline planes of TiO 2 (anatase).…”

Section: Xrd and Xrf Analysismentioning

confidence: 99%

Fabrication of TiO₂ Spheres and a Visible Light Active α-Fe₂O₃/TiO₂-Rutile/TiO₂-Anatase Heterogeneous Photocatalyst from Natural Ilmenite

et al. 2022

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High-purity (98.8%, TiO 2 ) rutile nanoparticles were successfully synthesized using ilmenite sand as the initial titanium source. This novel synthesis method was cost-effective and straightforward due to the absence of the traditional gravity, magnetic, electrostatic separation, ball milling, and smelting processes. Synthesized TiO 2 nanoparticles were 99% pure. Also, highly corrosive environmentally hazardous acid leachate generated during the leaching process of ilmenite sand was effectively converted into a highly efficient visible light active photocatalyst. The prepared photocatalyst system consists of anatase-TiO 2 /rutile-TiO 2 /Fe 2 O 3 (TF-800), rutile-TiO 2 /Fe 2 TiO 5 (TFTO-800), and anatase-TiO 2 /Fe 3 O 4 (TF-450) nanocomposites, respectively. The pseudo-second-order adsorption rate of the TF-800 ternary nanocomposite was 0.126 g mg –1 min –1 in dark conditions, and a 0.044 min –1 visible light initial photodegradation rate was exhibited. The TFTO-800 binary nanocomposite adsorbed methylene blue (MB) following pseudo-second-order adsorption (0.224 g mg –1 min –1 ) in the dark, and the rate constant for photodegradation of MB in visible light was 0.006 min –1 . The prepared TF-450 nanocomposite did not display excellent adsorptive and photocatalytic performances throughout the experiment period. The synthesized TF-800 and TFTO-800 were able to degrade 93.1 and 49.8% of a 100 mL, 10 ppm MB dye solution within 180 min, respectively.

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“…Furthermore, the three samples with Zn and Fe (Figure 5b-d) contained Fe in both metallic oxidized states. The components located at 706 and 720 eV were attributed to Fe-Fe, whereas those at 711 and 724 eV were attributed to Fe 3+ in Fe2O3 [36,37]. Note that no significant shifts in the peak location were observed as a function of thickness or etching time.…”

Section: Resultsmentioning

confidence: 90%

Zn and Zn-Fe Nanostructures with Multifunctional Properties as Components for Food Packaging Materials

et al. 2022

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Metallic and bimetallic nanostructures have shown interesting chromatic and antibacterial properties, and they can be used in various applications. In this work, zinc (Zn) and iron (Fe) nanostructures were produced with different morphologies: (i) pure Zn; (ii) Zn-Fe nanoalloys; (iii) Zn-Fe nanolayers (Zn-Fe NLs); and (iv) Zn nanolayers combined with Fe nanoparticles (Zn NLs + Fe NPs). The aim was to produce components for food packaging materials with active and intelligent properties, including oxygen absorption capacity, chromatic properties, and antibacterial properties. Thus, the morphology, structure, and chemical composition of the samples were characterized and correlated with their oxidation, chromatic, and antibacterial properties. The results revealed a relevant reduction in the coating’s opacity after oxidation varying from 100 to 10% depending on the morphology of the system. All coatings exhibited significant antibacterial activity against S. aureus, revealing a direct correlation with Zn content. The incorporation of Fe for all atomic arrangements showed a negative impact on the antibacterial effect against E. coli, decreasing to less than half the zone of inhibition for Zn-Fe NLs and Zn NLs + Fe NPs and suppressing the antibacterial effect for Zn-Fe alloy when compared with the pure Zn system.

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Enhancement of heterogeneous photo-Fenton performance of core-shell structured boron-doped reduced graphene oxide wrapped magnetical Fe3O4 nanoparticles: Fe(II)/Fe(III) redox and mechanism

Cited by 46 publications

References 75 publications

Multi‐Interfaces Regulated Polyaniline/Nano‐Fe₃O₄/Graphene Ternary Hybrids for Ultra‐Broadband Electromagnetic Absorption

Multi‐Interfaces Regulated Polyaniline/Nano‐Fe₃O₄/Graphene Ternary Hybrids for Ultra‐Broadband Electromagnetic Absorption

Fabrication of TiO₂ Spheres and a Visible Light Active α-Fe₂O₃/TiO₂-Rutile/TiO₂-Anatase Heterogeneous Photocatalyst from Natural Ilmenite

Zn and Zn-Fe Nanostructures with Multifunctional Properties as Components for Food Packaging Materials

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Enhancement of heterogeneous photo-Fenton performance of core-shell structured boron-doped reduced graphene oxide wrapped magnetical Fe3O4 nanoparticles: Fe(II)/Fe(III) redox and mechanism

Cited by 46 publications

References 75 publications

Multi‐Interfaces Regulated Polyaniline/Nano‐Fe3O4/Graphene Ternary Hybrids for Ultra‐Broadband Electromagnetic Absorption

Multi‐Interfaces Regulated Polyaniline/Nano‐Fe3O4/Graphene Ternary Hybrids for Ultra‐Broadband Electromagnetic Absorption

Fabrication of TiO2 Spheres and a Visible Light Active α-Fe2O3/TiO2-Rutile/TiO2-Anatase Heterogeneous Photocatalyst from Natural Ilmenite

Zn and Zn-Fe Nanostructures with Multifunctional Properties as Components for Food Packaging Materials

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Product

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Multi‐Interfaces Regulated Polyaniline/Nano‐Fe₃O₄/Graphene Ternary Hybrids for Ultra‐Broadband Electromagnetic Absorption

Multi‐Interfaces Regulated Polyaniline/Nano‐Fe₃O₄/Graphene Ternary Hybrids for Ultra‐Broadband Electromagnetic Absorption

Fabrication of TiO₂ Spheres and a Visible Light Active α-Fe₂O₃/TiO₂-Rutile/TiO₂-Anatase Heterogeneous Photocatalyst from Natural Ilmenite