Preparation and characterization of multifunctional Fe 3 O 4 -coated Ag nanocomposites for catalytic reduction of 4-nitrophenol

Wang, Jie; Yang, Xiaoxin; Li, Anxia; Cai, Xiulan

doi:10.1016/j.matlet.2018.02.100

Cited by 17 publications

(2 citation statements)

References 14 publications

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“…The diffraction intensity of the Fe 3 O 4 peaks, as depicted in Figure 2, is lower than that of the Ag peaks. Wang et al attributed such a difference in peak intensity to the Ag content being greater than the Fe 3 O 4 content [30]. However, Qi and coworkers observed very different intensities of Fe 3 O 4 and Ag, and they attributed the difference in intensity to the Ag nanoparticles being aggregated and unevenly distributed [31].…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Fe3O4/Ag nanohybrid ferrofluids and their applications as antimicrobial and antifibrotic agents

Taufiq

Saputro

Susanto

et al. 2020

Heliyon

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To date, the search for creating stable ferrofluids with excellent properties for biomedical application is one of the challenging scientific and practical investigations. In this study, novel Fe 3 O 4 /Ag nanohybrid ferrofluids from iron sand were synthesized using a double-layer method. The Fe 3 O 4 /Ag nanocomposites exhibited stable crystallite sizes of 11.8 12.1 nm and 36.8-37.2 nm for Fe 3 O 4 and Ag, respectively. The lattice parameters of the spinel structure Fe 3 O 4 and face-centered cubic Ag were respectively 8.344 Å and 4.091 Å. With increasing Ag amount, the crystallite phase of Ag in the nanocomposites increased from 40.2% to 77.2%. The XPS results confirmed that Fe 3 O 4 /Ag nanocomposites were successfully prepared, where Fe 3 O 4 mixed well with Ag via strong ionic bonding. The FTIR results confirmed the presence of Fe 3 O 4 /Ag, oleic acid, and dimethyl sulfoxide as the filler, first layer, and second layer, respectively. The as-prepared ferrofluids exhibited superparamagnetic behavior, where the saturation magnetization decreased with increasing Ag content. The Fe 3 O 4 /Ag nanohybrid ferrofluids exhibited excellent antimicrobial performance against Bacillus subtilis, Staphylococcus aureus, Escherichia coli, and Candida albicans. More importantly, the Fe 3 O 4 /Ag nanohybrid ferrofluids decreased the progression of liver fibrosisrelated inflammation and fibrogenic activity on hepatic stellate cells.

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Section: Resultsmentioning

confidence: 99%

Synthesis of Fe3O4/Ag nanohybrid ferrofluids and their applications as antimicrobial and antifibrotic agents

Taufiq

Saputro

Susanto

et al. 2020

Heliyon

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“…In addition, Ni could change the electronic structure of Pd and thus modulate the catalytic performance of the Ni-Pd/Fe 3 O 4 catalyst [46,47]. It is worth noting that the catalytic activity of the Ni-Pd/Fe 3 O 4 catalyst surpassed many of the Fe 3 O 4 -supported nanocatalysts reported within recent five years (Figure 7a and Table S1) [35,[48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65][66]. In addition, the magnetic recyclability and durability were studied by repeating the catalytic reduction of 4-NP the presence of a recycled Ni-Pd/Fe 3 O 4 catalyst.…”

Section: Catalytic Performance Of the Ni-pd/fe 3 O 4 Catalystmentioning

confidence: 98%

Ni-Pd-Incorporated Fe3O4 Yolk-Shelled Nanospheres as Efficient Magnetically Recyclable Catalysts for Reduction of N-Containing Unsaturated Compounds

Wang

Wen

et al. 2023

Catalysts

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The use of metal-based heterogeneous catalysts for the degradation of N-containing organic dyes has attracted much attention due to their excellent treatment efficiency and capability. Here, we report the synthesis of heterometals (Ni and Pd)-incorporated Fe3O4 (Ni-Pd/Fe3O4) yolk-shelled nanospheres for the catalytic reduction of N-containing organic dyes using a facile combination of solvothermal treatment and high-temperature annealing steps. Benefiting from the magnetic properties and the yolk-shelled structure of the Fe3O4 support, as well as the uniformly dispersed active heterometals incorporated in the shell and yolk of spherical Fe3O4 nanoparticles, the as-prepared Ni-Pd/Fe3O4 composite shows excellent recyclability and enhanced catalytic activity for three N-containing organic dyes (e.g., 4-nitrophenol, Congo red, and methyl orange) compared with its mono metal counterparts (e.g., Ni/Fe3O4 and Pd/Fe3O4). In the 4-nitrophenol reduction reaction, the catalytic activity of Ni-Pd/Fe3O4 was superior to many Fe3O4-supported nanocatalysts reported within the last five years. This work provides an effective strategy to boost the activity of iron oxide-based catalytic materials via dual or even multiple heterometallic incorporation strategy and sheds new light on environmental catalysis.

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Copper(II)-coated Fe3O4 nanoparticles as an efficient enzyme mimic for colorimetric detection of hydrogen peroxide

Liu

Zhu

et al. 2019

Microchim Acta

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Preparation and characterization of multifunctional Fe 3 O 4 -coated Ag nanocomposites for catalytic reduction of 4-nitrophenol

Cited by 17 publications

References 14 publications

Synthesis of Fe3O4/Ag nanohybrid ferrofluids and their applications as antimicrobial and antifibrotic agents

Synthesis of Fe3O4/Ag nanohybrid ferrofluids and their applications as antimicrobial and antifibrotic agents

Ni-Pd-Incorporated Fe3O4 Yolk-Shelled Nanospheres as Efficient Magnetically Recyclable Catalysts for Reduction of N-Containing Unsaturated Compounds

Copper(II)-coated Fe3O4 nanoparticles as an efficient enzyme mimic for colorimetric detection of hydrogen peroxide

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