In situ decoration of Au NPs over polydopamine encapsulated GO/Fe3O4 nanoparticles as a recyclable nanocatalyst for the reduction of nitroarenes

Abstract A new and efficient catalyst has been designed and prepared via in situ immobilization of Au NPs fabricated polydopamine (PDA)-shelled Fe3O4 nanoparticle anchored over graphene oxide (GO) (GO/Fe3O4@PDA/Au). This novel, architecturally interesting magnetic nanocomposite was fully characteriz...

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Autores principales:	Saba Hemmati, Majid M. Heravi, Bikash Karmakar, Hojat Veisi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5c403edcdc414e1e80d792246a48c72f
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spelling	oai:doaj.org-article:5c403edcdc414e1e80d792246a48c72f2021-12-02T17:52:32ZIn situ decoration of Au NPs over polydopamine encapsulated GO/Fe3O4 nanoparticles as a recyclable nanocatalyst for the reduction of nitroarenes10.1038/s41598-021-90514-x2045-2322https://doaj.org/article/5c403edcdc414e1e80d792246a48c72f2021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90514-xhttps://doaj.org/toc/2045-2322Abstract A new and efficient catalyst has been designed and prepared via in situ immobilization of Au NPs fabricated polydopamine (PDA)-shelled Fe3O4 nanoparticle anchored over graphene oxide (GO) (GO/Fe3O4@PDA/Au). This novel, architecturally interesting magnetic nanocomposite was fully characterized using different analytical techniques such as Field Emission Scanning Electron Microscopy, Energy Dispersive X-ray Spectroscopy, elemental mapping, Transmission Electron Microscopy, Fourier Transformed Infrared Spectroscopy, X-ray Diffraction and Inductively Coupled Plasma-Atomic Electron Spectroscopy. Catalytic activity of this material was successfully explored in the reduction of nitroarenes to their corresponding substituted anilines, using NaBH4 as reducing agent at ambient conditions. The most significant merits for this protocol were smooth and clean catalysis at room temperature with excellent productivity, sustainable conditions, ease of separation of catalyst from the reaction mixture by using a magnetic bar and most importantly reusability of the catalyst at least 8 times without any pre-activation, minimum loss of activity and considerable leaching.Saba HemmatiMajid M. HeraviBikash KarmakarHojat VeisiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Saba Hemmati Majid M. Heravi Bikash Karmakar Hojat Veisi In situ decoration of Au NPs over polydopamine encapsulated GO/Fe3O4 nanoparticles as a recyclable nanocatalyst for the reduction of nitroarenes
description	Abstract A new and efficient catalyst has been designed and prepared via in situ immobilization of Au NPs fabricated polydopamine (PDA)-shelled Fe3O4 nanoparticle anchored over graphene oxide (GO) (GO/Fe3O4@PDA/Au). This novel, architecturally interesting magnetic nanocomposite was fully characterized using different analytical techniques such as Field Emission Scanning Electron Microscopy, Energy Dispersive X-ray Spectroscopy, elemental mapping, Transmission Electron Microscopy, Fourier Transformed Infrared Spectroscopy, X-ray Diffraction and Inductively Coupled Plasma-Atomic Electron Spectroscopy. Catalytic activity of this material was successfully explored in the reduction of nitroarenes to their corresponding substituted anilines, using NaBH4 as reducing agent at ambient conditions. The most significant merits for this protocol were smooth and clean catalysis at room temperature with excellent productivity, sustainable conditions, ease of separation of catalyst from the reaction mixture by using a magnetic bar and most importantly reusability of the catalyst at least 8 times without any pre-activation, minimum loss of activity and considerable leaching.
format	article
author	Saba Hemmati Majid M. Heravi Bikash Karmakar Hojat Veisi
author_facet	Saba Hemmati Majid M. Heravi Bikash Karmakar Hojat Veisi
author_sort	Saba Hemmati
title	In situ decoration of Au NPs over polydopamine encapsulated GO/Fe3O4 nanoparticles as a recyclable nanocatalyst for the reduction of nitroarenes
title_short	In situ decoration of Au NPs over polydopamine encapsulated GO/Fe3O4 nanoparticles as a recyclable nanocatalyst for the reduction of nitroarenes
title_full	In situ decoration of Au NPs over polydopamine encapsulated GO/Fe3O4 nanoparticles as a recyclable nanocatalyst for the reduction of nitroarenes
title_fullStr	In situ decoration of Au NPs over polydopamine encapsulated GO/Fe3O4 nanoparticles as a recyclable nanocatalyst for the reduction of nitroarenes
title_full_unstemmed	In situ decoration of Au NPs over polydopamine encapsulated GO/Fe3O4 nanoparticles as a recyclable nanocatalyst for the reduction of nitroarenes
title_sort	in situ decoration of au nps over polydopamine encapsulated go/fe3o4 nanoparticles as a recyclable nanocatalyst for the reduction of nitroarenes
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/5c403edcdc414e1e80d792246a48c72f
work_keys_str_mv	AT sabahemmati insitudecorationofaunpsoverpolydopamineencapsulatedgofe3o4nanoparticlesasarecyclablenanocatalystforthereductionofnitroarenes AT majidmheravi insitudecorationofaunpsoverpolydopamineencapsulatedgofe3o4nanoparticlesasarecyclablenanocatalystforthereductionofnitroarenes AT bikashkarmakar insitudecorationofaunpsoverpolydopamineencapsulatedgofe3o4nanoparticlesasarecyclablenanocatalystforthereductionofnitroarenes AT hojatveisi insitudecorationofaunpsoverpolydopamineencapsulatedgofe3o4nanoparticlesasarecyclablenanocatalystforthereductionofnitroarenes
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In situ decoration of Au NPs over polydopamine encapsulated GO/Fe3O4 nanoparticles as a recyclable nanocatalyst for the reduction of nitroarenes

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