A Cubic Silsesquioxane Chemically Modified with a PAMAM Dendrimer G0: an Application in Electro-Oxidation of Ascorbic Acid
Main Author: | |
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Publication Date: | 2019 |
Other Authors: | , , |
Format: | Article |
Language: | eng |
Source: | Repositório Institucional da UNESP |
Download full: | http://dx.doi.org/10.1007/s12633-019-0086-3 http://hdl.handle.net/11449/188669 |
Summary: | Octa-(3-chloropropyl) octasilsesquioxane (SS) was functionalized with a PAMAM dendrimer (SP) and characterized by some spectroscopic techniques such as Fourier Transform Infrared, Nuclear Magnetic Resonance, X-ray diffraction, X-ray Dispersive Energy Spectroscopy, Scanning Electron Microscopy and cyclic voltammetry. As a fast application, after there the Ag+ was adsorbed by SP and in a second step, the resulting material was reacted with potassium hexacyanoferrate (III) (AgHSP). The cyclic voltammogram of the AgHSP showed two redox pairs with formal potentials (Eθ’) of Eθ’ (I) = 0.26 V and Eθ’ (II) = 0.71 V (v = 20 mV s−1, KNO3 1.00 mol L−1, pH 7.00) assigned to processes Ag0 / AgI and FeII (CN)6 / FeIII (CN)6, respectively. The analytical application of this new material (AgHSP) was tested in the rapid detection of acid ascorbic by strong electrocatalysis using graphite paste electrode (GPE). The limit of detection (LOD) obtained for this system was 7.034 × 10−5 mol L−1 with an excellent amperometric sensitivity of 0.0835 A / mol L−1. |
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A Cubic Silsesquioxane Chemically Modified with a PAMAM Dendrimer G0: an Application in Electro-Oxidation of Ascorbic AcidAscorbic acidMixed valence complexPAMAM dendrimerSensorSilsesquioxanesVoltammetryOcta-(3-chloropropyl) octasilsesquioxane (SS) was functionalized with a PAMAM dendrimer (SP) and characterized by some spectroscopic techniques such as Fourier Transform Infrared, Nuclear Magnetic Resonance, X-ray diffraction, X-ray Dispersive Energy Spectroscopy, Scanning Electron Microscopy and cyclic voltammetry. As a fast application, after there the Ag+ was adsorbed by SP and in a second step, the resulting material was reacted with potassium hexacyanoferrate (III) (AgHSP). The cyclic voltammogram of the AgHSP showed two redox pairs with formal potentials (Eθ’) of Eθ’ (I) = 0.26 V and Eθ’ (II) = 0.71 V (v = 20 mV s−1, KNO3 1.00 mol L−1, pH 7.00) assigned to processes Ag0 / AgI and FeII (CN)6 / FeIII (CN)6, respectively. The analytical application of this new material (AgHSP) was tested in the rapid detection of acid ascorbic by strong electrocatalysis using graphite paste electrode (GPE). The limit of detection (LOD) obtained for this system was 7.034 × 10−5 mol L−1 with an excellent amperometric sensitivity of 0.0835 A / mol L−1.Faculdade de Engenharia de Ilha Solteira UNESP Departamento de Física e Química Universidade Estadual Paulista, Av. Brasil Centro, 56. CEPFaculdade de Engenharia de Ilha Solteira UNESP Departamento de Física e Química Universidade Estadual Paulista, Av. Brasil Centro, 56. CEPUniversidade Estadual Paulista (Unesp)Do Carmo, Devaney Ribeiro [UNESP]de Oliveira, Denys Ribeiro [UNESP]Barbosa, Priscila Fernanda Pereira [UNESP]Godoi, Natasha Mirella Inhã [UNESP]2019-10-06T16:15:24Z2019-10-06T16:15:24Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1007/s12633-019-0086-3Silicon.1876-99181876-990Xhttp://hdl.handle.net/11449/18866910.1007/s12633-019-0086-32-s2.0-85060716295Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSiliconinfo:eu-repo/semantics/openAccess2021-10-23T11:59:51Zoai:repositorio.unesp.br:11449/188669Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T11:59:51Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
A Cubic Silsesquioxane Chemically Modified with a PAMAM Dendrimer G0: an Application in Electro-Oxidation of Ascorbic Acid |
title |
A Cubic Silsesquioxane Chemically Modified with a PAMAM Dendrimer G0: an Application in Electro-Oxidation of Ascorbic Acid |
spellingShingle |
A Cubic Silsesquioxane Chemically Modified with a PAMAM Dendrimer G0: an Application in Electro-Oxidation of Ascorbic Acid Do Carmo, Devaney Ribeiro [UNESP] Ascorbic acid Mixed valence complex PAMAM dendrimer Sensor Silsesquioxanes Voltammetry |
title_short |
A Cubic Silsesquioxane Chemically Modified with a PAMAM Dendrimer G0: an Application in Electro-Oxidation of Ascorbic Acid |
title_full |
A Cubic Silsesquioxane Chemically Modified with a PAMAM Dendrimer G0: an Application in Electro-Oxidation of Ascorbic Acid |
title_fullStr |
A Cubic Silsesquioxane Chemically Modified with a PAMAM Dendrimer G0: an Application in Electro-Oxidation of Ascorbic Acid |
title_full_unstemmed |
A Cubic Silsesquioxane Chemically Modified with a PAMAM Dendrimer G0: an Application in Electro-Oxidation of Ascorbic Acid |
title_sort |
A Cubic Silsesquioxane Chemically Modified with a PAMAM Dendrimer G0: an Application in Electro-Oxidation of Ascorbic Acid |
author |
Do Carmo, Devaney Ribeiro [UNESP] |
author_facet |
Do Carmo, Devaney Ribeiro [UNESP] de Oliveira, Denys Ribeiro [UNESP] Barbosa, Priscila Fernanda Pereira [UNESP] Godoi, Natasha Mirella Inhã [UNESP] |
author_role |
author |
author2 |
de Oliveira, Denys Ribeiro [UNESP] Barbosa, Priscila Fernanda Pereira [UNESP] Godoi, Natasha Mirella Inhã [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Do Carmo, Devaney Ribeiro [UNESP] de Oliveira, Denys Ribeiro [UNESP] Barbosa, Priscila Fernanda Pereira [UNESP] Godoi, Natasha Mirella Inhã [UNESP] |
dc.subject.por.fl_str_mv |
Ascorbic acid Mixed valence complex PAMAM dendrimer Sensor Silsesquioxanes Voltammetry |
topic |
Ascorbic acid Mixed valence complex PAMAM dendrimer Sensor Silsesquioxanes Voltammetry |
description |
Octa-(3-chloropropyl) octasilsesquioxane (SS) was functionalized with a PAMAM dendrimer (SP) and characterized by some spectroscopic techniques such as Fourier Transform Infrared, Nuclear Magnetic Resonance, X-ray diffraction, X-ray Dispersive Energy Spectroscopy, Scanning Electron Microscopy and cyclic voltammetry. As a fast application, after there the Ag+ was adsorbed by SP and in a second step, the resulting material was reacted with potassium hexacyanoferrate (III) (AgHSP). The cyclic voltammogram of the AgHSP showed two redox pairs with formal potentials (Eθ’) of Eθ’ (I) = 0.26 V and Eθ’ (II) = 0.71 V (v = 20 mV s−1, KNO3 1.00 mol L−1, pH 7.00) assigned to processes Ag0 / AgI and FeII (CN)6 / FeIII (CN)6, respectively. The analytical application of this new material (AgHSP) was tested in the rapid detection of acid ascorbic by strong electrocatalysis using graphite paste electrode (GPE). The limit of detection (LOD) obtained for this system was 7.034 × 10−5 mol L−1 with an excellent amperometric sensitivity of 0.0835 A / mol L−1. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-06T16:15:24Z 2019-10-06T16:15:24Z 2019-01-01 |
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/10.1007/s12633-019-0086-3 Silicon. 1876-9918 1876-990X http://hdl.handle.net/11449/188669 10.1007/s12633-019-0086-3 2-s2.0-85060716295 |
url |
http://dx.doi.org/10.1007/s12633-019-0086-3 http://hdl.handle.net/11449/188669 |
identifier_str_mv |
Silicon. 1876-9918 1876-990X 10.1007/s12633-019-0086-3 2-s2.0-85060716295 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Silicon |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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 |
|
_version_ |
1797789319709065216 |