Core–shell structured Fe3O4@SiO2-supported IL/[Mo6O19]: A novel and magnetically recoverable nanocatalyst for the preparation of biologically active dihydropyrimidinones

Kargar, Shiva; Elhamifar, Dawood; Zarnegaryan, Ali

doi:10.1016/j.jpcs.2020.109601

Cited by 45 publications

(21 citation statements)

References 121 publications

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“…[3,4,6] In addition, the magnetic properties of superparamagnetic nanoparticles depend on nanoparticle crystallite size, shape, and geometry. Therefore, researchers turned their attention on the fabrication of pure Fe 3 O 4 (magnetite) with tunable sizes and shapes, and its derivatives starting from core-shell geometries, [10][11][12][13][14][15][16][17][18][19] nanocomposites [20][21][22][23][24][25][26][27][28] to doped systems [29][30][31][32][33][34][35] having interesting magnetic, dielectric and chemical properties and applied them for advanced technological and biomedical applications. For example, bulk magnetite exhibits a saturation magnetization (M S ) of about 92 emu g -1 .…”

Section: Introductionmentioning

confidence: 99%

Rare‐Earth Doped Iron Oxide Nanostructures for Cancer Theranostics: Magnetic Hyperthermia and Magnetic Resonance Imaging

Laha

Thorat

Singh

et al. 2021

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He received his Ph.D. degree in materials sciences from the University of South Australia and his research primarily focuses on carbon capture using nanoporous materials. He has published 39 articles including review and research articles in high-quality materials science-based journals including Chemical Society Reviews and Advanced Materials. His contribution to the research has been acknowledged in the form of 1580 google scholar citations with an h-index of 18.

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Section: Introductionmentioning

confidence: 99%

Rare‐Earth Doped Iron Oxide Nanostructures for Cancer Theranostics: Magnetic Hyperthermia and Magnetic Resonance Imaging

Laha

Thorat

Singh

et al. 2021

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“…The wide-angle PXRD (WAPXRD) analysis of Fe 220), (311), (400), (422), (511), (440), (533), and (620) (Figure 2). [60,67] These peaks are related to the crystalline structure of magnetic iron oxides, proving high stability and durability of these magnetite NPs during catalyst preparation steps.…”

Section: Synthesis Of Fe 3 O 4 @Sio 2 -Nh 3 CLmentioning

confidence: 98%

Core‐shell structured magnetite silica‐supported hexatungstate: A novel and powerful nanocatalyst for the synthesis of biologically active pyrazole derivatives

Nemati

Elhamifar

Zarnegaryan

et al. 2021

Applied Organom Chemis

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This article describes the synthesis of a novel core-shell structured magnetic silica-supported hexatungstate (Fe 3 O 4 @SiO 2 -NH 3 [W 6 O 19 ]) nanocatalyst through immobilization of hexatungstate on amine-modified magnetic silica nanoparticles. The physicochemical properties of Fe 3 O 4 @SiO 2 -NH 3 [W 6 O 19 ] were investigated by using Fourier transform infrared (FT-IR) spectroscopy, powder X-ray diffraction, vibrating sample magnetometer, wide-angle PXRD, scanning electron microscopy, transmission electron microscopy, and energydispersive X-ray spectroscopy analyses. The Fe 3 O 4 @SiO 2 -NH 3 [W 6 O 19 ] nanocatalyst was used as a powerful and heterogeneous catalyst in the synthesis of pyrazole derivatives. This novel catalyst was reused at least seven times without loss of its activity.

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“…The use of nickel and cobalt is limited due to their toxicity and high tendency to oxidize. Among these, magnetic iron oxide NPs, especially superparamagnetic Fe 3 O 4 NPs, have been considered by researchers due to their non-toxicity, good biocompatibility and good magnetic properties 10 , 11 . Magnetic NPs, despite having many advantages, suffer from a series of inherent disadvantages such as high chemical activity and a high tendency to aggregate due to their high surface area.…”

Section: Introductionmentioning

confidence: 99%

Ag2CO3 containing magnetic nanocomposite as a powerful and recoverable catalyst for Knoevenagel condensation

Karimkhah

Elhamifar

Shaker

2021

Sci Rep

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In this paper, the synthesis, characterization and catalytic application of a novel magnetic silica-supported Ag2CO3 (MS/Ag2CO3) with core–shell structure are developed. The MS/Ag2CO3 nanocomposite was prepared through chemical modification of magnetic MS nanoparticles with AgNO3 under alkaline conditions. The structure, chemical composition and magnetic properties of MS/Ag2CO3 were investigated by using VSM, PXRD, FT-IR, EDX and SEM techniques. The MS/Ag2CO3 nanocomposite was used as an effective catalyst for the Knoevenagel condensation under solvent-free conditions at 60 °C in an ultrasonic bath. The recovery and leaching tests were performed to study the nature of the MS/Ag2CO3 catalyst under applied conditions.

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Core–shell structured Fe3O4@SiO2-supported IL/[Mo6O19]: A novel and magnetically recoverable nanocatalyst for the preparation of biologically active dihydropyrimidinones

Cited by 45 publications

References 121 publications

Rare‐Earth Doped Iron Oxide Nanostructures for Cancer Theranostics: Magnetic Hyperthermia and Magnetic Resonance Imaging

Rare‐Earth Doped Iron Oxide Nanostructures for Cancer Theranostics: Magnetic Hyperthermia and Magnetic Resonance Imaging

Core‐shell structured magnetite silica‐supported hexatungstate: A novel and powerful nanocatalyst for the synthesis of biologically active pyrazole derivatives

Ag2CO3 containing magnetic nanocomposite as a powerful and recoverable catalyst for Knoevenagel condensation

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