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Immobilized copper-layered nickel ferrite on acid-activated montmorillonite, [(NiFe(2)O(4)@Cu)(H(+)-Mont)], as a superior magnetic nanocatalyst for the green synthesis of xanthene derivatives
In this study, the immobilization of copper-layered nickel ferrite on the surface and in the cavities of acid-activated 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 o...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9092614/ https://www.ncbi.nlm.nih.gov/pubmed/35558991 http://dx.doi.org/10.1039/c9ra04320a |
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author | Zeynizadeh, Behzad Rahmani, Soleiman |
author_facet | Zeynizadeh, Behzad Rahmani, Soleiman |
author_sort | Zeynizadeh, Behzad |
collection | PubMed |
description | In this study, the immobilization of copper-layered nickel ferrite on the surface and in the cavities of acid-activated 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. |
format | Online Article Text |
id | pubmed-9092614 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90926142022-05-11 Immobilized copper-layered nickel ferrite on acid-activated montmorillonite, [(NiFe(2)O(4)@Cu)(H(+)-Mont)], as a superior magnetic nanocatalyst for the green synthesis of xanthene derivatives Zeynizadeh, Behzad Rahmani, Soleiman RSC Adv Chemistry In this study, the immobilization of copper-layered nickel ferrite on the surface and in the cavities of acid-activated 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. The Royal Society of Chemistry 2019-09-06 /pmc/articles/PMC9092614/ /pubmed/35558991 http://dx.doi.org/10.1039/c9ra04320a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Zeynizadeh, Behzad Rahmani, Soleiman Immobilized copper-layered nickel ferrite on acid-activated montmorillonite, [(NiFe(2)O(4)@Cu)(H(+)-Mont)], as a superior magnetic nanocatalyst for the green synthesis of xanthene derivatives |
title | Immobilized copper-layered nickel ferrite on acid-activated montmorillonite, [(NiFe(2)O(4)@Cu)(H(+)-Mont)], as a superior magnetic nanocatalyst for the green synthesis of xanthene derivatives |
title_full | Immobilized copper-layered nickel ferrite on acid-activated montmorillonite, [(NiFe(2)O(4)@Cu)(H(+)-Mont)], as a superior magnetic nanocatalyst for the green synthesis of xanthene derivatives |
title_fullStr | Immobilized copper-layered nickel ferrite on acid-activated montmorillonite, [(NiFe(2)O(4)@Cu)(H(+)-Mont)], as a superior magnetic nanocatalyst for the green synthesis of xanthene derivatives |
title_full_unstemmed | Immobilized copper-layered nickel ferrite on acid-activated montmorillonite, [(NiFe(2)O(4)@Cu)(H(+)-Mont)], as a superior magnetic nanocatalyst for the green synthesis of xanthene derivatives |
title_short | Immobilized copper-layered nickel ferrite on acid-activated montmorillonite, [(NiFe(2)O(4)@Cu)(H(+)-Mont)], as a superior magnetic nanocatalyst for the green synthesis of xanthene derivatives |
title_sort | immobilized copper-layered nickel ferrite on acid-activated montmorillonite, [(nife(2)o(4)@cu)(h(+)-mont)], as a superior magnetic nanocatalyst for the green synthesis of xanthene derivatives |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9092614/ https://www.ncbi.nlm.nih.gov/pubmed/35558991 http://dx.doi.org/10.1039/c9ra04320a |
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