A new SERS substrate based on niobium lead-pyrophosphate glasses obtained by Ag+/Na+ ion exchange
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.snb.2018.08.113 http://hdl.handle.net/11449/180179 |
Resumo: | Surface-enhanced Raman scattering (SERS) is one of the most sensitive methods for the detection of adsorbed molecules on the nanostructured coinage-metal surface. The enhancements in the order of 104–106 are routinely observed. Such an effect makes SERS spectroscopy a technique applicable to the study the adsorption of analytes in the submonolayer regime. Novel SERS sensors require novel substrates with high activity for great sensibility detection of different molecules applied in many fields, such as detections of narcotics, explosives, and molecules with biological interest. In this work, silver nanoparticles embedded in niobium lead-pyrophosphate glasses (Pb2P2O7-Nb2O5-Na2O) were prepared by ion exchange process, where silver ions were introduced into glass surface by Ag+/Na+ ion exchange (NaNO3:AgNO3 batch), and reduced to metallic silver by heat treatment at glass transition temperature (ca. 480 °C). The new substrate was characterized by Raman spectroscopy, optical absorption, transmission electron microscopy (TEM) and atomic force microscopy (AFM). Its application in SERS was demonstrated by studying the adsorption of 2,2-bipyridine (bpy) on the glass surface, which has marker bands for the coordination of the adsorbate with silver atoms. The optimal surface features in terms of SERS enhancement were also discussed and the sensing ability of this new substrate was demonstrated. |
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A new SERS substrate based on niobium lead-pyrophosphate glasses obtained by Ag+/Na+ ion exchangeIon exchangePhosphate glassRaman spectroscopySERSTrace analysisSurface-enhanced Raman scattering (SERS) is one of the most sensitive methods for the detection of adsorbed molecules on the nanostructured coinage-metal surface. The enhancements in the order of 104–106 are routinely observed. Such an effect makes SERS spectroscopy a technique applicable to the study the adsorption of analytes in the submonolayer regime. Novel SERS sensors require novel substrates with high activity for great sensibility detection of different molecules applied in many fields, such as detections of narcotics, explosives, and molecules with biological interest. In this work, silver nanoparticles embedded in niobium lead-pyrophosphate glasses (Pb2P2O7-Nb2O5-Na2O) were prepared by ion exchange process, where silver ions were introduced into glass surface by Ag+/Na+ ion exchange (NaNO3:AgNO3 batch), and reduced to metallic silver by heat treatment at glass transition temperature (ca. 480 °C). The new substrate was characterized by Raman spectroscopy, optical absorption, transmission electron microscopy (TEM) and atomic force microscopy (AFM). Its application in SERS was demonstrated by studying the adsorption of 2,2-bipyridine (bpy) on the glass surface, which has marker bands for the coordination of the adsorbate with silver atoms. The optimal surface features in terms of SERS enhancement were also discussed and the sensing ability of this new substrate was demonstrated.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)São Carlos Institute of Chemistry – IQSC University of São Paulo – USPInstitute of Chemistry São Paulo State University – UNESPMaterials Engineering Department – DEMA Federal University of São Carlos – UFSCarDepartment of Chemistry Federal University of Juiz de Fora – UFJFInstitute of Chemistry São Paulo State University – UNESPFAPESP: 2013/07793-6FAPESP: 2016/16900-9CNPq: 502391/2014-6Universidade de São Paulo (USP)Universidade Estadual Paulista (Unesp)Universidade Federal de São Carlos (UFSCar)Federal University of Juiz de Fora – UFJFManzani, DaniloFranco, Douglas F. [UNESP]Afonso, Conrado R.M.Sant'Ana, Antônio C.Nalin, Marcelo [UNESP]Ribeiro, Sidney J.L. [UNESP]2018-12-11T17:38:30Z2018-12-11T17:38:30Z2018-12-20info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article347-352application/pdfhttp://dx.doi.org/10.1016/j.snb.2018.08.113Sensors and Actuators, B: Chemical, v. 277, p. 347-352.0925-4005http://hdl.handle.net/11449/18017910.1016/j.snb.2018.08.1132-s2.0-850533269082-s2.0-85053326908.pdf3349586880746735Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSensors and Actuators, B: Chemical1,406info:eu-repo/semantics/openAccess2023-10-18T06:08:25Zoai:repositorio.unesp.br:11449/180179Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:15:15.240790Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
A new SERS substrate based on niobium lead-pyrophosphate glasses obtained by Ag+/Na+ ion exchange |
title |
A new SERS substrate based on niobium lead-pyrophosphate glasses obtained by Ag+/Na+ ion exchange |
spellingShingle |
A new SERS substrate based on niobium lead-pyrophosphate glasses obtained by Ag+/Na+ ion exchange Manzani, Danilo Ion exchange Phosphate glass Raman spectroscopy SERS Trace analysis |
title_short |
A new SERS substrate based on niobium lead-pyrophosphate glasses obtained by Ag+/Na+ ion exchange |
title_full |
A new SERS substrate based on niobium lead-pyrophosphate glasses obtained by Ag+/Na+ ion exchange |
title_fullStr |
A new SERS substrate based on niobium lead-pyrophosphate glasses obtained by Ag+/Na+ ion exchange |
title_full_unstemmed |
A new SERS substrate based on niobium lead-pyrophosphate glasses obtained by Ag+/Na+ ion exchange |
title_sort |
A new SERS substrate based on niobium lead-pyrophosphate glasses obtained by Ag+/Na+ ion exchange |
author |
Manzani, Danilo |
author_facet |
Manzani, Danilo Franco, Douglas F. [UNESP] Afonso, Conrado R.M. Sant'Ana, Antônio C. Nalin, Marcelo [UNESP] Ribeiro, Sidney J.L. [UNESP] |
author_role |
author |
author2 |
Franco, Douglas F. [UNESP] Afonso, Conrado R.M. Sant'Ana, Antônio C. Nalin, Marcelo [UNESP] Ribeiro, Sidney J.L. [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Estadual Paulista (Unesp) Universidade Federal de São Carlos (UFSCar) Federal University of Juiz de Fora – UFJF |
dc.contributor.author.fl_str_mv |
Manzani, Danilo Franco, Douglas F. [UNESP] Afonso, Conrado R.M. Sant'Ana, Antônio C. Nalin, Marcelo [UNESP] Ribeiro, Sidney J.L. [UNESP] |
dc.subject.por.fl_str_mv |
Ion exchange Phosphate glass Raman spectroscopy SERS Trace analysis |
topic |
Ion exchange Phosphate glass Raman spectroscopy SERS Trace analysis |
description |
Surface-enhanced Raman scattering (SERS) is one of the most sensitive methods for the detection of adsorbed molecules on the nanostructured coinage-metal surface. The enhancements in the order of 104–106 are routinely observed. Such an effect makes SERS spectroscopy a technique applicable to the study the adsorption of analytes in the submonolayer regime. Novel SERS sensors require novel substrates with high activity for great sensibility detection of different molecules applied in many fields, such as detections of narcotics, explosives, and molecules with biological interest. In this work, silver nanoparticles embedded in niobium lead-pyrophosphate glasses (Pb2P2O7-Nb2O5-Na2O) were prepared by ion exchange process, where silver ions were introduced into glass surface by Ag+/Na+ ion exchange (NaNO3:AgNO3 batch), and reduced to metallic silver by heat treatment at glass transition temperature (ca. 480 °C). The new substrate was characterized by Raman spectroscopy, optical absorption, transmission electron microscopy (TEM) and atomic force microscopy (AFM). Its application in SERS was demonstrated by studying the adsorption of 2,2-bipyridine (bpy) on the glass surface, which has marker bands for the coordination of the adsorbate with silver atoms. The optimal surface features in terms of SERS enhancement were also discussed and the sensing ability of this new substrate was demonstrated. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-12-11T17:38:30Z 2018-12-11T17:38:30Z 2018-12-20 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.snb.2018.08.113 Sensors and Actuators, B: Chemical, v. 277, p. 347-352. 0925-4005 http://hdl.handle.net/11449/180179 10.1016/j.snb.2018.08.113 2-s2.0-85053326908 2-s2.0-85053326908.pdf 3349586880746735 |
url |
http://dx.doi.org/10.1016/j.snb.2018.08.113 http://hdl.handle.net/11449/180179 |
identifier_str_mv |
Sensors and Actuators, B: Chemical, v. 277, p. 347-352. 0925-4005 10.1016/j.snb.2018.08.113 2-s2.0-85053326908 2-s2.0-85053326908.pdf 3349586880746735 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Sensors and Actuators, B: Chemical 1,406 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
347-352 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808128488499052544 |