Visible light activation of gold nanoparticles embedded into titanium dioxide surface in electrospun polymeric coatings

This work reports the development of a functional photocatalytic coating based on a combination of polymeric electrospun fibres and nanoparticles that is intended to be activated in the visible light range. In this sense, the resulting fibres can act as an effective matrix for the incorporation of t...

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Authors: Sandúa Fernández, Xabier, Rivero Fuente, Pedro J., Calvopiña, Jonathan, Rodríguez Trías, Rafael
Format: article
Status:Published version
Publication Date:2024
Country:España
Institution:Universidad Pública de Navarra
Repository:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
OAI Identifier:oai:academica-e.unavarra.es:2454/47814
Online Access:https://hdl.handle.net/2454/47814
Access Level:Open access
Keyword:Dip-coating
Gold nanoparticles
Photocatalysis
Rhodamine B
Solution-casting
Titanium dioxide
Visible-light
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spelling Visible light activation of gold nanoparticles embedded into titanium dioxide surface in electrospun polymeric coatingsSandúa Fernández, XabierRivero Fuente, Pedro J.Calvopiña, JonathanRodríguez Trías, RafaelDip-coatingGold nanoparticlesPhotocatalysisRhodamine BSolution-castingTitanium dioxideVisible-lightThis work reports the development of a functional photocatalytic coating based on a combination of polymeric electrospun fibres and nanoparticles that is intended to be activated in the visible light range. In this sense, the resulting fibres can act as an effective matrix for the incorporation of titanium dioxide (TiO2) particles, which are covered by gold nanoparticles (AuNPs), in the outer surface of the metal oxide precursor. In the first step of the process, the optical properties of the nanoparticles were determined by UV-Vis spectroscopy. The extension of the visible absorption can be associated to the localized surface plasmon resonance (LSPR) of the metallic AuNPs. In addition, the resultant particle size distribution and average particle diameter was evaluated by dynamic light scattering (DLS) measurements. Furthermore, the phase composition and porosity of the functional particle powder were analysed by an XRD and N2 adsorption test. In the second step, these synthesized particles have been successfully immobilized into a PAA + β-CD electrospun fibre matrix by using the two different deposition methods of dip-coating and solution-casting, respectively. The morphological characterization of the samples was implemented by means of scanning electron microscopy (SEM), showing uniform and homogeneous, free-beaded fibres with a random distribution of the synthesized particles deposited onto the electrospun fibres. Then, the functional coatings were removed from the substrate, and a thermogravimetric (TGA) analysis was carried out for each sample in order to obtain the precursor mass immobilized in the coating. Once the overall mass of precursor was obtained, the percentage of TiO2 particles and AuNPs in the precursor was calculated by using inductively coupled plasma atomic emission spectrometry (ICP-AES). Finally, the photocatalytic activity of both functional solution and electrospun coatings were evaluated in terms of a gradual degradation of rhodamine B (RhB) dye after continuous exposition to a visible-light lamp.This research was funded by the Government of Navarra-Department of Economic Development (PC080/081 GREEN-COPPER).MDPIIngenieríaIngeniaritzaInstitute for Advanced Materials and Mathematics - INAMAT22024info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2454/47814reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarrainstname:Universidad Pública de NavarraInglésinfo:eu-repo/grantAgreement/Gobierno de Navarra//PC080%2F081 GREEN-COPPER© 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:academica-e.unavarra.es:2454/478142026-06-17T12:41:47Z
dc.title.none.fl_str_mv Visible light activation of gold nanoparticles embedded into titanium dioxide surface in electrospun polymeric coatings
title Visible light activation of gold nanoparticles embedded into titanium dioxide surface in electrospun polymeric coatings
spellingShingle Visible light activation of gold nanoparticles embedded into titanium dioxide surface in electrospun polymeric coatings
Sandúa Fernández, Xabier
Dip-coating
Gold nanoparticles
Photocatalysis
Rhodamine B
Solution-casting
Titanium dioxide
Visible-light
title_short Visible light activation of gold nanoparticles embedded into titanium dioxide surface in electrospun polymeric coatings
title_full Visible light activation of gold nanoparticles embedded into titanium dioxide surface in electrospun polymeric coatings
title_fullStr Visible light activation of gold nanoparticles embedded into titanium dioxide surface in electrospun polymeric coatings
title_full_unstemmed Visible light activation of gold nanoparticles embedded into titanium dioxide surface in electrospun polymeric coatings
title_sort Visible light activation of gold nanoparticles embedded into titanium dioxide surface in electrospun polymeric coatings
dc.creator.none.fl_str_mv Sandúa Fernández, Xabier
Rivero Fuente, Pedro J.
Calvopiña, Jonathan
Rodríguez Trías, Rafael
author Sandúa Fernández, Xabier
author_facet Sandúa Fernández, Xabier
Rivero Fuente, Pedro J.
Calvopiña, Jonathan
Rodríguez Trías, Rafael
author_role author
author2 Rivero Fuente, Pedro J.
Calvopiña, Jonathan
Rodríguez Trías, Rafael
author2_role author
author
author
dc.contributor.none.fl_str_mv Ingeniería
Ingeniaritza
Institute for Advanced Materials and Mathematics - INAMAT2
dc.subject.none.fl_str_mv Dip-coating
Gold nanoparticles
Photocatalysis
Rhodamine B
Solution-casting
Titanium dioxide
Visible-light
topic Dip-coating
Gold nanoparticles
Photocatalysis
Rhodamine B
Solution-casting
Titanium dioxide
Visible-light
description This work reports the development of a functional photocatalytic coating based on a combination of polymeric electrospun fibres and nanoparticles that is intended to be activated in the visible light range. In this sense, the resulting fibres can act as an effective matrix for the incorporation of titanium dioxide (TiO2) particles, which are covered by gold nanoparticles (AuNPs), in the outer surface of the metal oxide precursor. In the first step of the process, the optical properties of the nanoparticles were determined by UV-Vis spectroscopy. The extension of the visible absorption can be associated to the localized surface plasmon resonance (LSPR) of the metallic AuNPs. In addition, the resultant particle size distribution and average particle diameter was evaluated by dynamic light scattering (DLS) measurements. Furthermore, the phase composition and porosity of the functional particle powder were analysed by an XRD and N2 adsorption test. In the second step, these synthesized particles have been successfully immobilized into a PAA + β-CD electrospun fibre matrix by using the two different deposition methods of dip-coating and solution-casting, respectively. The morphological characterization of the samples was implemented by means of scanning electron microscopy (SEM), showing uniform and homogeneous, free-beaded fibres with a random distribution of the synthesized particles deposited onto the electrospun fibres. Then, the functional coatings were removed from the substrate, and a thermogravimetric (TGA) analysis was carried out for each sample in order to obtain the precursor mass immobilized in the coating. Once the overall mass of precursor was obtained, the percentage of TiO2 particles and AuNPs in the precursor was calculated by using inductively coupled plasma atomic emission spectrometry (ICP-AES). Finally, the photocatalytic activity of both functional solution and electrospun coatings were evaluated in terms of a gradual degradation of rhodamine B (RhB) dye after continuous exposition to a visible-light lamp.
publishDate 2024
dc.date.none.fl_str_mv 2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2454/47814
url https://hdl.handle.net/2454/47814
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/Gobierno de Navarra//PC080%2F081 GREEN-COPPER
dc.rights.none.fl_str_mv https://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
instname:Universidad Pública de Navarra
instname_str Universidad Pública de Navarra
reponame_str Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
collection Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
repository.name.fl_str_mv
repository.mail.fl_str_mv
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