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Hollow Au@TiO(2) porous electrospun nanofibers for catalytic applications

Catalytically active porous and hollow titania nanofibers encapsulating gold nanoparticles were fabricated using a combination of sol–gel chemistry and coaxial electrospinning technique. We report the fabrication of catalytically active porous and hollow titania nanofibers encapsulating gold nanopar...

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Autores principales: Kumar, Labeesh, Singh, Sajan, Horechyy, Andriy, Formanek, Petr, Hübner, René, Albrecht, Victoria, Weißpflog, Janek, Schwarz, Simona, Puneet, Puhup, Nandan, Bhanu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9049786/
https://www.ncbi.nlm.nih.gov/pubmed/35495995
http://dx.doi.org/10.1039/c9ra10487a
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author Kumar, Labeesh
Singh, Sajan
Horechyy, Andriy
Formanek, Petr
Hübner, René
Albrecht, Victoria
Weißpflog, Janek
Schwarz, Simona
Puneet, Puhup
Nandan, Bhanu
author_facet Kumar, Labeesh
Singh, Sajan
Horechyy, Andriy
Formanek, Petr
Hübner, René
Albrecht, Victoria
Weißpflog, Janek
Schwarz, Simona
Puneet, Puhup
Nandan, Bhanu
author_sort Kumar, Labeesh
collection PubMed
description Catalytically active porous and hollow titania nanofibers encapsulating gold nanoparticles were fabricated using a combination of sol–gel chemistry and coaxial electrospinning technique. We report the fabrication of catalytically active porous and hollow titania nanofibers encapsulating gold nanoparticles (AuNPs) using a combination of sol–gel chemistry and coaxial electrospinning technique. The coaxial electrospinning involved the use of a mixture of poly(vinyl pyrrolidone) (PVP) and titania sol as the shell forming component, whereas a mixture of poly(4-vinyl pyridine) (P4VP) and pre-synthesized AuNPs constituted the core forming component. The core–shell nanofibers were calcined stepwise up to 600 °C which resulted in decomposition and removal of the organic constituents of the nanofibers. This led to the formation of porous and hollow titania nanofibers, where the catalytic AuNPs were embedded in the inner wall of the titania shell. The catalytic activity of the prepared Au@TiO(2) porous nanofibers was investigated using a model reaction of catalytic reduction of 4-nitrophenol and Congo red dye in the presence of NaBH(4). The Au@TiO(2) porous and hollow nanofibers exhibited excellent catalytic activity and recyclability, and the morphology of the nanofibers remained intact after repeated usage. The presented approach could be a promising route for immobilizing various nanosized catalysts in hollow titania supports for the design of stable catalytic systems where the added photocatalytic activity of titania could further be of significance.
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spelling pubmed-90497862022-04-29 Hollow Au@TiO(2) porous electrospun nanofibers for catalytic applications Kumar, Labeesh Singh, Sajan Horechyy, Andriy Formanek, Petr Hübner, René Albrecht, Victoria Weißpflog, Janek Schwarz, Simona Puneet, Puhup Nandan, Bhanu RSC Adv Chemistry Catalytically active porous and hollow titania nanofibers encapsulating gold nanoparticles were fabricated using a combination of sol–gel chemistry and coaxial electrospinning technique. We report the fabrication of catalytically active porous and hollow titania nanofibers encapsulating gold nanoparticles (AuNPs) using a combination of sol–gel chemistry and coaxial electrospinning technique. The coaxial electrospinning involved the use of a mixture of poly(vinyl pyrrolidone) (PVP) and titania sol as the shell forming component, whereas a mixture of poly(4-vinyl pyridine) (P4VP) and pre-synthesized AuNPs constituted the core forming component. The core–shell nanofibers were calcined stepwise up to 600 °C which resulted in decomposition and removal of the organic constituents of the nanofibers. This led to the formation of porous and hollow titania nanofibers, where the catalytic AuNPs were embedded in the inner wall of the titania shell. The catalytic activity of the prepared Au@TiO(2) porous nanofibers was investigated using a model reaction of catalytic reduction of 4-nitrophenol and Congo red dye in the presence of NaBH(4). The Au@TiO(2) porous and hollow nanofibers exhibited excellent catalytic activity and recyclability, and the morphology of the nanofibers remained intact after repeated usage. The presented approach could be a promising route for immobilizing various nanosized catalysts in hollow titania supports for the design of stable catalytic systems where the added photocatalytic activity of titania could further be of significance. The Royal Society of Chemistry 2020-02-12 /pmc/articles/PMC9049786/ /pubmed/35495995 http://dx.doi.org/10.1039/c9ra10487a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Kumar, Labeesh
Singh, Sajan
Horechyy, Andriy
Formanek, Petr
Hübner, René
Albrecht, Victoria
Weißpflog, Janek
Schwarz, Simona
Puneet, Puhup
Nandan, Bhanu
Hollow Au@TiO(2) porous electrospun nanofibers for catalytic applications
title Hollow Au@TiO(2) porous electrospun nanofibers for catalytic applications
title_full Hollow Au@TiO(2) porous electrospun nanofibers for catalytic applications
title_fullStr Hollow Au@TiO(2) porous electrospun nanofibers for catalytic applications
title_full_unstemmed Hollow Au@TiO(2) porous electrospun nanofibers for catalytic applications
title_short Hollow Au@TiO(2) porous electrospun nanofibers for catalytic applications
title_sort hollow au@tio(2) porous electrospun nanofibers for catalytic applications
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9049786/
https://www.ncbi.nlm.nih.gov/pubmed/35495995
http://dx.doi.org/10.1039/c9ra10487a
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