Magnetically separable core–shell iron oxide@nickel nanoparticles as high-performance recyclable catalysts for chemoselective reduction of nitroaromatics

Rathore, Puran Singh; Patidar, Rajesh; Shripathi, T.; Thakore, Sonal

doi:10.1039/c4cy00673a

Cited by 58 publications

(35 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Noble‐metal‐assisted reductions have been demonstrated involving Pd, Pt, Ag, and Au catalysts, with the use of H 2 gas as the cocatalyst. Nevertheless, the necessity of high H 2 gas pressures reduces recyclability and the high temperatures required present some limitations.…”

Section: Introductionmentioning

confidence: 99%

Development of Efficient Copper‐Based MOF‐Derived Catalysts for the Reduction of Aromatic Nitro Compounds

et al. 2018

View full text Add to dashboard Cite

Two copper‐based Cu3(btc)2 and Cu(Im)2 metal–organic frameworks are synthesized and annealed to form nanoporous Cu/Cu2O@C and Cu@N‐C nanoparticles for utilization as catalysts in the reduction reaction of aromatic nitro compounds to aromatic amines. All synthesized MOF compounds and MOF‐derived nanoparticles are characterized using XRD, Raman spectroscopy, TGA, SEM‐EDX, and XPS methods. Also, the pore‐size distribution and surface area of the MOF‐derived Cu/Cu2O@C and Cu@N‐C nanoparticles are characterized by the BJH and BET methods. After characterization, the catalysts Cu/Cu2O@C and Cu@N‐C are catalytically tested for the reduction reactions of various aromatic nitro compounds chemically by monitoring with a UV/Vis spectrometer. Both catalysts exhibit remarkable results compared with those in the literature. Also, the Cu/Cu2O@C catalyst shows better results than the Cu@N‐C catalyst.

show abstract

Section: Introductionmentioning

confidence: 99%

Development of Efficient Copper‐Based MOF‐Derived Catalysts for the Reduction of Aromatic Nitro Compounds

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Always there is a need for simplified method to produce catalyst, enhanced catalytic activity, recyclability of the heterogeneous catalyst, and versatility to use for various reactions. Many literatures indicated that the nanoparticle as catalysts can be easily separated and recycled with retention of catalytic activity compared to their bulk counterparts . In the past years, many hierarchical nanostructures have been used in catalysis.…”

Section: Introductionmentioning

confidence: 99%

Recyclable Ni₃S₄Nanocatalyst for Hydrogenation of Nitroarenes

2017

View full text Add to dashboard Cite

The synthesis of surface‐clean nanoparticles of Ni3S4, which is a rare phase of nickel sulphides, is described. Nanoparticles were synthesized in a single step via hexamethyldisilazane (HMDS) –assisted method using NiCl2 and thiourea as starting materials. This synthetic method yielded phase pure, spherical Ni3S4 nanoparticles of mean size 17 ± 4 nm having clean surfaces. The nanoparticles were characterized thoroughly by data obtained from Powder X‐ray diffraction (PXRD), Fourier‐transform infrared spectra (FT‐IR), Energy dispersive X‐ray analysis (EDAX) and Transmission electron microscopy (TEM) analyses. Since newly produced Ni3S4 nanoparticles in our reaction had exposed surfaces, the catalytic behaviour of these particles was assessed by using it as a catalyst in the reduction reaction of aromatic nitro groups. We have demonstrated Ni3S4 nanoparticle as a versatile catalyst for the nitro hydrogenation of both activated and deactivated nitrobenzenes using hydrazine as a hydrogen source to yield corresponding amines in high yield (∼90 %). The heterogeneous catalyst, Ni3S4 nanoparticles was recycled more than ten times without any change in its activity. We have ascribed the enhanced catalytic activity of these Ni3S4 nanoparticles to their clean surfaces without any surfactant molecules around them.

show abstract

“…Metal oxides containing iron as the main component are called ferrites with general formula MFe 2 O 4 (M = Co, Ni, Cu, etc.) . Ferrites are important magnetic materials with high magnetic character, low cost of production, high thermal and chemical stability, and a wide range of applications in scientific and industrial fields such as in transformer cores, permanent magnets, radio wave circuits, magnetic resonance imaging, high‐quality filters, antenna rods, magnetic recording media, operating devices, magnetic resonance amplifiers, etc .…”

Section: Introductionmentioning

confidence: 99%

“…These materials are broadly studied due to their electric, magnetic, catalytic and structural properties . When spinel ferrites are in the nanometric size range, they display superparamagnetic nature, which is of great interest due from the point of view of their application . Further, in a catalytic system, they can be easily separated from reaction media using an external magnet .…”

Section: Introductionmentioning

confidence: 99%

Dual functional novel catalytic Cu_1−xZr_xFe₂O₄ (x=0, 0.5, 1) nanoparticles for synthesis of polysubstituted pyridines and sunlight‐driven degradation of methylene blue

Singh

Rajput

Govil

et al. 2018

Applied Organom Chemis

View full text Add to dashboard Cite

The effect of varied zirconium content on the structural, morphological, magnetic, optical, thermal and catalytic properties of nanoparticles of the ferrite Cu1 − xZrxFe2O4 (x = 0, 0.5, 1) was investigated. The mixed ferrite was synthesized by the auto‐combustion method using nitrates of respective metals and citric acid as a chelating agent. The as‐prepared nanoparticles showed dual benefits. They were employed as a heterogeneous catalyst for one‐pot synthesis of polysubstituted pyridine derivatives as well as for catalytic degradation of industrial waste dyes such as methylene blue (MB). The highlight of the research reported is the catalytic degradation of industrial waste (MB) with high efficiency in eluent of a wide range of pH (3–13). The proposed nanoparticles arguably offer certain great advantages that include: low cost, facile nature, anti‐leaching property, magnetic recoverability and recyclability. The characterization of the as‐synthesized nanoparticles was done using various techniques. The leaching study was carried out using inductively coupled plasma optical emission spectroscopy. The formation of organic products was confirmed using Fourier transform infrared and 1H NMR spectroscopies and examination of degradation products of MB dye was carried out using mass spectrometry and UV–visible spectroscopy.

show abstract

Magnetically separable core–shell iron oxide@nickel nanoparticles as high-performance recyclable catalysts for chemoselective reduction of nitroaromatics

Abstract: A magnetically separable core–shell iron oxide@nickel nanocatalyst was synthesized, characterized and applied for the aromatic nitro group reduction.

Cited by 58 publications

References 62 publications

Development of Efficient Copper‐Based MOF‐Derived Catalysts for the Reduction of Aromatic Nitro Compounds

Development of Efficient Copper‐Based MOF‐Derived Catalysts for the Reduction of Aromatic Nitro Compounds

Recyclable Ni₃S₄Nanocatalyst for Hydrogenation of Nitroarenes

Dual functional novel catalytic Cu_1−xZr_xFe₂O₄ (x=0, 0.5, 1) nanoparticles for synthesis of polysubstituted pyridines and sunlight‐driven degradation of methylene blue

Contact Info

Product

Resources

About

Magnetically separable core–shell iron oxide@nickel nanoparticles as high-performance recyclable catalysts for chemoselective reduction of nitroaromatics

Abstract: A magnetically separable core–shell iron oxide@nickel nanocatalyst was synthesized, characterized and applied for the aromatic nitro group reduction.

Cited by 58 publications

References 62 publications

Development of Efficient Copper‐Based MOF‐Derived Catalysts for the Reduction of Aromatic Nitro Compounds

Development of Efficient Copper‐Based MOF‐Derived Catalysts for the Reduction of Aromatic Nitro Compounds

Recyclable Ni3S4Nanocatalyst for Hydrogenation of Nitroarenes

Dual functional novel catalytic Cu1−xZrxFe2O4 (x=0, 0.5, 1) nanoparticles for synthesis of polysubstituted pyridines and sunlight‐driven degradation of methylene blue

Contact Info

Product

Resources

About

Recyclable Ni₃S₄Nanocatalyst for Hydrogenation of Nitroarenes

Dual functional novel catalytic Cu_1−xZr_xFe₂O₄ (x=0, 0.5, 1) nanoparticles for synthesis of polysubstituted pyridines and sunlight‐driven degradation of methylene blue