Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Zeynizadeh, Behzad, Rahmani, Soleiman
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
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
_version_ 1784705172765671424
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
work_keys_str_mv AT zeynizadehbehzad immobilizedcopperlayerednickelferriteonacidactivatedmontmorillonitenife2o4cuhmontasasuperiormagneticnanocatalystforthegreensynthesisofxanthenederivatives
AT rahmanisoleiman immobilizedcopperlayerednickelferriteonacidactivatedmontmorillonitenife2o4cuhmontasasuperiormagneticnanocatalystforthegreensynthesisofxanthenederivatives