Cellulose supported bimetallic Fe–Cu nanoparticles: a magnetically recoverable nanocatalyst for quick reduction of nitroarenes to amines in water

Karami, Shiva; Zeynizadeh, Behzad; Shokri, Zahra

doi:10.1007/s10570-018-1809-0

Cited by 46 publications

(21 citation statements)

References 36 publications

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“…71 A literature review shows that the synthesis of xanthene materials catalyzed by copper nanoparticles has not yet been investigated. Therefore, in line with the outlined strategies and in continuation of our research program towards the synthesis and application of magnetic nanocatalysts, 65,[72][73][74][75][76] herein, we wish to introduce the immobilization of copperlayered nickel ferrite on acid-activated montmorillonite, (NiFe 2 O 4 @Cu)(H + -Mont) ( Fig. 1), with the aims of (i) combining the catalytic activity of the copper-layered nickel ferrite constituent with the Brønsted and Lewis acidity of the H + -Mont clay mineral, affording prominent catalytic activity of the nal catalyst system and (ii) avoiding aggregation and improving the stability of the copper nanoparticles as well as the shelf life capability of the NiFe 2 O 4 @Cu MNPs via immobilization in the interlamellar spaces of the clay mineral.…”

Section: Introductionmentioning

confidence: 77%

Immobilized copper-layered nickel ferrite on acid-activated montmorillonite, [(NiFe₂O₄@Cu)(H⁺-Mont)], as a superior magnetic nanocatalyst for the green synthesis of xanthene derivatives

Zeynizadeh

Rahmani

2019

RSC Adv.

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In this study, the immobilization of copper-layered nickel ferrite on the surface and in the cavities of acidactivated montmorillonite (H + -Mont) was investigated. In this context, magnetic nanoparticles (MNPs) of NiFe 2 O 4 as the prime magnetic cores were prepared. Next, through the reduction of Cu 2+ ions with sodium borohydride, the nanoparticles of Cu 0 were immobilized on the nanocore-surface of NiFe 2 O 4 , and the constituent NiFe 2 O 4 @Cu MNPs were obtained. Moreover, through the activation of montmorillonite K10 (Mont K10) with HCl (4 M) under controlled conditions, the H + -Mont constituent was prepared. The nanostructured NiFe 2 O 4 @Cu was then intercalated within the interlayers and on the external surface of the H + -Mont constituent to afford the novel magnetic nanocomposite (NiFe 2 O 4 @Cu)(H + -Mont). The prepared clay nanocomposite was characterized using FTIR spectroscopy, SEM, EDX, XRD, VSM and BET analyses. The obtained results showed that through acid-activation, the stacked-sheet structure of Mont K10 was exfoliated to tiny segments, leading to a significant increase in the surface area and total pore volume of the H + -Mont constituent as compared to those of montmorillonite alone. SEM analysis also exhibited that the dispersion of NiFe 2 O 4 @Cu MNPs in the interlayers and on the external surface of acid-activated montmorillonite was carried out successfully, and the nanoparticle sizes were distributed in the range of 15-25 nm. The BET surface analysis also indicated that through the immobilization of NiFe 2 O 4 @Cu MNPs, the surface area and total pore volume of the H + -Mont system were decreased. The catalytic activity of (NiFe 2 O 4 @Cu)(H + -Mont) was further studied towards the synthesis of substituted 13-aryl-5H-dibenzo [b,i]xanthene-5,7,12,14(13H) tetraones 3(a-k) and 3,3,6,6-tetramethyl-9-aryl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H) diones 5(a-k) via the pseudo-one-pot three-component cyclocondensation of 2-hydroxy-1,4-naphthoquinone (Lawsone)/ dimedone and aromatic aldehydes in a mixture of H 2 O-EtOH (1 : 1 mL) as a green solvent at 80-90 C.The (NiFe 2 O 4 @Cu)(H + -Mont) MNPs can be easily separated from the reaction mixture by an external magnetic field and reused for seven consecutive cycles without significant loss of catalytic activity.

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Section: Introductionmentioning

confidence: 77%

Immobilized copper-layered nickel ferrite on acid-activated montmorillonite, [(NiFe₂O₄@Cu)(H⁺-Mont)], as a superior magnetic nanocatalyst for the green synthesis of xanthene derivatives

Zeynizadeh

Rahmani

2019

RSC Adv.

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“…CuFe nanoparticles have also been produced by synthesizing the nZVI using the duction of ferric chloride (FeCl3 . 6H2O) by NaBH4 followed by planting Cu onto the surf of nZVI by redox reaction occurring between the Cu 2+ and nZVI [51][52][53][54]. Synthesis of metallic FeCu nanoparticles with different Cu to Fe ratio of 1:20, 1:10, 1:6.7, and 1:5 (w and average size of 45 nm, 59 nm, 72 nm, and 85 nm, respectively, was reported [52].…”

Section: Chemical Reductionmentioning

confidence: 99%

Bimetal CuFe Nanoparticles—Synthesis, Properties, and Applications

Światkowska-Warkocka

2021

Applied Sciences

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Bimetal CuFe (copper-iron) nanoparticles, which are based on the earth-abundant and inexpensive metals, have generated a great deal of interest in recent years. The possible modification of the chemical and physical properties of these nanoparticles by changing their size, structure, and composition has contributed to the development of material science. At the same time, the strong tendency of these elements to oxidize under atmospheric conditions makes the synthesis of pure bimetallic CuFe nanoparticles still a great challenge. This review reports on different synthetic approaches to bimetallic CuFe nanoparticles and bimetallic CuFe nanoparticles supported on various materials (active carbide, carbide nanotubes, silica, graphite, cellulose, mesoporous carbide), their structure, physical, and chemical properties, as well as their utility as catalysts, including electrocatalysis and photocatalysis.

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“…Currently, magnetic nanoparticles (MNPs) are regarded as favorite supports to heterogenize the homogeneous catalysts owing to their unique properties [8–10] . Besides, cellulose as an inexhaustible organic polymer with interesting texture has attracted the consideration of researchers [11–13] . In addition, this bio‐based raw substance is a terrific option for grafting of diverse nano‐sized metal particles to many organic transformations because of the presence of numerous hydroxyl groups, which would be substituted instantly, by heavy metal groups [14–16] …”

Section: Introductionmentioning

confidence: 99%

Designing CoFe₂O₄/Cellulose@L‐aspargine‐Co Nanocomposite: An Ultra‐Efficient Recyclable Catalyst in the Quick Reduction of Nitro Compounds under Eco‐Friendly Conditions

2021

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In this work, novel magnetic nanoparticles CoFe2O4/MCC (microcrystalline cellulose) @L‐aspargine‐Co have been synthesized via simple procedure and have been fully characterized using several techniques such as scanning electron microscopy (FE‐SEM), transmission electron microscopy (TEM), energy‐dispersive X‐ray spectroscopy (EDX), X‐ray atomic mapping, powder X‐ray diffraction (XRD), Fourier transform spectroscopy infrared (FT‐IR) and coupled plasma optical emission spectrometry (ICP‐OES). The catalytic efficiency of this nanocatalyst has been examined in the eco‐friendly reduction of different substituted nitro compounds to corresponding amines with sodium borohydride (NaBH4). The reactions were conducted in water at room temperature with high turnover numbers (TON) and turnover frequencies (TOF). The nontoxic nature, green reaction conditions, short reaction times, simple work‐up method and elimination of by‐products are some advantages of this approach. This organometallic catalyst was successfully recycled for eight times without losing the catalytic efficiency.

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Cellulose supported bimetallic Fe–Cu nanoparticles: a magnetically recoverable nanocatalyst for quick reduction of nitroarenes to amines in water

Cited by 46 publications

References 36 publications

Immobilized copper-layered nickel ferrite on acid-activated montmorillonite, [(NiFe₂O₄@Cu)(H⁺-Mont)], as a superior magnetic nanocatalyst for the green synthesis of xanthene derivatives

Immobilized copper-layered nickel ferrite on acid-activated montmorillonite, [(NiFe₂O₄@Cu)(H⁺-Mont)], as a superior magnetic nanocatalyst for the green synthesis of xanthene derivatives

Bimetal CuFe Nanoparticles—Synthesis, Properties, and Applications

Designing CoFe₂O₄/Cellulose@L‐aspargine‐Co Nanocomposite: An Ultra‐Efficient Recyclable Catalyst in the Quick Reduction of Nitro Compounds under Eco‐Friendly Conditions

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Cellulose supported bimetallic Fe–Cu nanoparticles: a magnetically recoverable nanocatalyst for quick reduction of nitroarenes to amines in water

Cited by 46 publications

References 36 publications

Immobilized copper-layered nickel ferrite on acid-activated montmorillonite, [(NiFe2O4@Cu)(H+-Mont)], as a superior magnetic nanocatalyst for the green synthesis of xanthene derivatives

Immobilized copper-layered nickel ferrite on acid-activated montmorillonite, [(NiFe2O4@Cu)(H+-Mont)], as a superior magnetic nanocatalyst for the green synthesis of xanthene derivatives

Bimetal CuFe Nanoparticles—Synthesis, Properties, and Applications

Designing CoFe2O4/Cellulose@L‐aspargine‐Co Nanocomposite: An Ultra‐Efficient Recyclable Catalyst in the Quick Reduction of Nitro Compounds under Eco‐Friendly Conditions

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Immobilized copper-layered nickel ferrite on acid-activated montmorillonite, [(NiFe₂O₄@Cu)(H⁺-Mont)], as a superior magnetic nanocatalyst for the green synthesis of xanthene derivatives

Immobilized copper-layered nickel ferrite on acid-activated montmorillonite, [(NiFe₂O₄@Cu)(H⁺-Mont)], as a superior magnetic nanocatalyst for the green synthesis of xanthene derivatives

Designing CoFe₂O₄/Cellulose@L‐aspargine‐Co Nanocomposite: An Ultra‐Efficient Recyclable Catalyst in the Quick Reduction of Nitro Compounds under Eco‐Friendly Conditions