Facile strategy for the synthesis of silver nanoparticles on magnetic Fe<sub>3</sub>O<sub>4</sub>@C core–shell nanocomposites and their application in catalytic reduction

Wang, Xin; Zheng, Jing; Li, Peiyu; Yin, Xue‐Bo; wang, siyao; Zhang, Baishun; Xu, Jingli; Zhang, Min

doi:10.1039/d1dt03863j

Cited by 7 publications

(2 citation statements)

References 51 publications

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“…where C and C 0 represent the concentration of 4-NP at time t and the initial concentration, respectively, and k stands for the apparent rate constant. 43 Fig. 5F shows the ln(C/C 0 ) vs. reaction time, which agrees well with the first-order reaction kine-tics.…”

Section: Papersupporting

confidence: 77%

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Formation of SiO₂@C–Ni magnetic nanotubes with excellent performance in 4-nitrophenol reduction

et al. 2022

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Section: Papersupporting

confidence: 77%

“…The peak at 295 nm is assigned to 4-AP, which is colorless after the reduction reaction. 43 When the catalyst was introduced, the reduction reaction occurred with a color change, suggesting the formation of 4-AP (Fig. 5B).…”

Section: Resultsmentioning

confidence: 97%

Formation of SiO₂@C–Ni magnetic nanotubes with excellent performance in 4-nitrophenol reduction

et al. 2022

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Facile Preparation of Magnetic Nitrogen‐Doped Carbon Microtubes with Co Nanoparticles for Reduction of 4‐Nitrophenol

Zheng

Mao

et al. 2023

ChemistrySelect

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Heterogeneous catalysts with controllable interface structures are of great importance to demonstrate the relationship between structure and property. Herein, magnetic Nitrogen‐doped carbon microtubes with Co nanoparticles (Fe3O4@C−Co) were prepared, which could be used for the reduction of 4‐nitrophenol(4‐NP). In the process, MoO3@FeOOH core‐shell structure was fabricated, then ZIF‐67 was decorated on the MoO3@FeOOH. After adding 2‐methylimidazole, MoO3 microrods were removed. Then the prepared FeOOH@ZIF‐67 microtubes are converted to Fe3O4@C−Co hybrid microtubes through pyrolysis. Due to the unique structures, the obtained Fe3O4@C−Co composites improved the dispersion of Co nanoparticles (NPs), diminished Co leaching, and promoted catalytic activity. The plentiful nitrogen improved electronic conductivity and brought additional active sites. The resulting Fe3O4@C−Co implies outstanding catalytic ability towards the reduction of 4‐NP. The synergistic effect between the hollow microtube and the fine dispersed Co NPs within Fe3O4@C−Co offered an excellent catalytic efficiency. More particularly, this achievement opens a new avenue to the targeted design of well‐defined nanocatalysts for practical applications in environmental remediation.

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The Application of Tannic Acid-Coated Magnetite Nanoparticles for Recovery of Microplastics from the Water System

Sacko,

Nure,

Nyoni

et al. 2024

Water Conserv Sci Eng

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The presence of microplastics (MPs) is rapidly increasing in the environment, posing a significant threat to public health and the ecosystem. To monitor the impact of MPs, it is crucial to have standardized detection methods and MPs remediation techniques. Therefore, this study aimed to use tannic acid-coated magnetite nanoparticles to recover MPs, specifically polystyrene (PS) and polyethylene terephthalate (PET), from water bodies. A facile method for MPs recovery was established using the synthesized tannic acid-coated magnetite (TA-Fe3O4) as an adsorbent. TA-Fe3O4 was synthesized using tannic acid, iron (II) sulfate heptahydrate, and iron (III) chloride hexahydrate through a one-pot co-precipitation method. The adsorbent material was then characterized using a scanning electron microscope coupled with an energy dispersive x-ray spectroscopy (SEM–EDS), x-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, zeta potential, and N2 adsorption–desorption (BET) techniques, confirming its successful synthesis. The maximum adsorption efficiencies for PS and PET were 83% and 98%, respectively, under the experimental conditions of pH 6–7, a contact time of 300 min, an adsorbent dose of 2.5 g/L, and an initial MPs concentration of 1.25 g/L. The study also found that the presence of ions in wastewater had a significant effect on MP recovery. However, when it came to recovering MPs from the spent adsorbent, the maximum values were observed in an acidic medium at pH 3–4 under sonification conditions. In conclusion, TA-Fe3O4 showed potential and efficiency in the recovery of MPs in aqueous media. However, further investigation is needed to improve the method and explore its application for multi-MPs recovery performance.

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Facile strategy for the synthesis of silver nanoparticles on magnetic Fe₃O₄@C core–shell nanocomposites and their application in catalytic reduction

Abstract: Integration of noble metal nanoparticles(NPs) on magnetic hollow structures is of particular importance to exhibit high catalytical activity, while the magnetic property is useful for the recovery of the composites....

Cited by 7 publications

References 51 publications

Formation of SiO₂@C–Ni magnetic nanotubes with excellent performance in 4-nitrophenol reduction

Formation of SiO₂@C–Ni magnetic nanotubes with excellent performance in 4-nitrophenol reduction

Facile Preparation of Magnetic Nitrogen‐Doped Carbon Microtubes with Co Nanoparticles for Reduction of 4‐Nitrophenol

The Application of Tannic Acid-Coated Magnetite Nanoparticles for Recovery of Microplastics from the Water System

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Facile strategy for the synthesis of silver nanoparticles on magnetic Fe3O4@C core–shell nanocomposites and their application in catalytic reduction

Abstract: Integration of noble metal nanoparticles(NPs) on magnetic hollow structures is of particular importance to exhibit high catalytical activity, while the magnetic property is useful for the recovery of the composites....

Cited by 7 publications

References 51 publications

Formation of SiO2@C–Ni magnetic nanotubes with excellent performance in 4-nitrophenol reduction

Formation of SiO2@C–Ni magnetic nanotubes with excellent performance in 4-nitrophenol reduction

Facile Preparation of Magnetic Nitrogen‐Doped Carbon Microtubes with Co Nanoparticles for Reduction of 4‐Nitrophenol

The Application of Tannic Acid-Coated Magnetite Nanoparticles for Recovery of Microplastics from the Water System

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Facile strategy for the synthesis of silver nanoparticles on magnetic Fe₃O₄@C core–shell nanocomposites and their application in catalytic reduction

Formation of SiO₂@C–Ni magnetic nanotubes with excellent performance in 4-nitrophenol reduction

Formation of SiO₂@C–Ni magnetic nanotubes with excellent performance in 4-nitrophenol reduction