Ascorbic acid electrocatalytic activity in different electrolyte solutions using electrodeposited Co(OH)2
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s11581-019-02845-5 http://hdl.handle.net/11449/187668 |
Resumo: | The present paper describes the use of electrodeposited Co(OH)2 on transparent conducting fluorine-doped tin oxide electrode (FTO) as functional material for ascorbic acid electrooxidation in different electrolyte solutions. The structure, composition, and morphology of film were investigated through Fourier transform infrared spectroscopy (FTIR), energy-dispersive X-ray spectrum (EDS), and scanning electron microscope (SEM). The electrochemical characterization in different electrolyte solutions was carried out by cyclic voltammetry (CV) and chronoamperometry. The voltammetric profile showed the presence of two possible reactions involving almost reversible redox processes during sweeping potential in KOH solution and a single redox process in KCl solution. The Co(OH)2 film presented electrocatalytic activity in ascorbic acid electrooxidation, being the sensitivity values found were 182.3 mA L mol−1 cm−2 and 119.4 mA L mol−1 cm−2 in KOH and KCl solutions, respectively. The results showed that the electrolytic solution strongly influenced the sensitivity of the FTO/Co(OH)2 film in ascorbic acid electrooxidation reaction. Kinetic studies showed that the electrode process was controlled by mass diffusion. In addition, chronoamperometric technique was carried out to verify the stability of the electrode. The obtained results reveal a good stability of electrode in the KCl solution; once in current density terms, the results are quite similar. |
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Repositório Institucional da UNESP |
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Ascorbic acid electrocatalytic activity in different electrolyte solutions using electrodeposited Co(OH)2Ascorbic acidCobalt hydroxideElectrodepositedElectrooxidationThe present paper describes the use of electrodeposited Co(OH)2 on transparent conducting fluorine-doped tin oxide electrode (FTO) as functional material for ascorbic acid electrooxidation in different electrolyte solutions. The structure, composition, and morphology of film were investigated through Fourier transform infrared spectroscopy (FTIR), energy-dispersive X-ray spectrum (EDS), and scanning electron microscope (SEM). The electrochemical characterization in different electrolyte solutions was carried out by cyclic voltammetry (CV) and chronoamperometry. The voltammetric profile showed the presence of two possible reactions involving almost reversible redox processes during sweeping potential in KOH solution and a single redox process in KCl solution. The Co(OH)2 film presented electrocatalytic activity in ascorbic acid electrooxidation, being the sensitivity values found were 182.3 mA L mol−1 cm−2 and 119.4 mA L mol−1 cm−2 in KOH and KCl solutions, respectively. The results showed that the electrolytic solution strongly influenced the sensitivity of the FTO/Co(OH)2 film in ascorbic acid electrooxidation reaction. Kinetic studies showed that the electrode process was controlled by mass diffusion. In addition, chronoamperometric technique was carried out to verify the stability of the electrode. The obtained results reveal a good stability of electrode in the KCl solution; once in current density terms, the results are quite similar.Engineering College Industrial Technical College/CTI UNESP–São Paulo State UniversityDepartment of Chemistry UEL–State University of LondrinaEngineering College Industrial Technical College/CTI UNESP–São Paulo State UniversityUniversidade Estadual Paulista (Unesp)Universidade Estadual de Londrina (UEL)da Silva Pelissari, Marcelo Rodrigues [UNESP]Archela, EdsonTarley, Cesar Ricardo TeixeiraDall’Antonia, Luiz Henrique2019-10-06T15:43:31Z2019-10-06T15:43:31Z2019-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1911-1920http://dx.doi.org/10.1007/s11581-019-02845-5Ionics, v. 25, n. 4, p. 1911-1920, 2019.1862-07600947-7047http://hdl.handle.net/11449/18766810.1007/s11581-019-02845-52-s2.0-85065726525Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengIonicsinfo:eu-repo/semantics/openAccess2021-10-22T21:03:19Zoai:repositorio.unesp.br:11449/187668Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-22T21:03:19Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Ascorbic acid electrocatalytic activity in different electrolyte solutions using electrodeposited Co(OH)2 |
title |
Ascorbic acid electrocatalytic activity in different electrolyte solutions using electrodeposited Co(OH)2 |
spellingShingle |
Ascorbic acid electrocatalytic activity in different electrolyte solutions using electrodeposited Co(OH)2 da Silva Pelissari, Marcelo Rodrigues [UNESP] Ascorbic acid Cobalt hydroxide Electrodeposited Electrooxidation |
title_short |
Ascorbic acid electrocatalytic activity in different electrolyte solutions using electrodeposited Co(OH)2 |
title_full |
Ascorbic acid electrocatalytic activity in different electrolyte solutions using electrodeposited Co(OH)2 |
title_fullStr |
Ascorbic acid electrocatalytic activity in different electrolyte solutions using electrodeposited Co(OH)2 |
title_full_unstemmed |
Ascorbic acid electrocatalytic activity in different electrolyte solutions using electrodeposited Co(OH)2 |
title_sort |
Ascorbic acid electrocatalytic activity in different electrolyte solutions using electrodeposited Co(OH)2 |
author |
da Silva Pelissari, Marcelo Rodrigues [UNESP] |
author_facet |
da Silva Pelissari, Marcelo Rodrigues [UNESP] Archela, Edson Tarley, Cesar Ricardo Teixeira Dall’Antonia, Luiz Henrique |
author_role |
author |
author2 |
Archela, Edson Tarley, Cesar Ricardo Teixeira Dall’Antonia, Luiz Henrique |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Estadual de Londrina (UEL) |
dc.contributor.author.fl_str_mv |
da Silva Pelissari, Marcelo Rodrigues [UNESP] Archela, Edson Tarley, Cesar Ricardo Teixeira Dall’Antonia, Luiz Henrique |
dc.subject.por.fl_str_mv |
Ascorbic acid Cobalt hydroxide Electrodeposited Electrooxidation |
topic |
Ascorbic acid Cobalt hydroxide Electrodeposited Electrooxidation |
description |
The present paper describes the use of electrodeposited Co(OH)2 on transparent conducting fluorine-doped tin oxide electrode (FTO) as functional material for ascorbic acid electrooxidation in different electrolyte solutions. The structure, composition, and morphology of film were investigated through Fourier transform infrared spectroscopy (FTIR), energy-dispersive X-ray spectrum (EDS), and scanning electron microscope (SEM). The electrochemical characterization in different electrolyte solutions was carried out by cyclic voltammetry (CV) and chronoamperometry. The voltammetric profile showed the presence of two possible reactions involving almost reversible redox processes during sweeping potential in KOH solution and a single redox process in KCl solution. The Co(OH)2 film presented electrocatalytic activity in ascorbic acid electrooxidation, being the sensitivity values found were 182.3 mA L mol−1 cm−2 and 119.4 mA L mol−1 cm−2 in KOH and KCl solutions, respectively. The results showed that the electrolytic solution strongly influenced the sensitivity of the FTO/Co(OH)2 film in ascorbic acid electrooxidation reaction. Kinetic studies showed that the electrode process was controlled by mass diffusion. In addition, chronoamperometric technique was carried out to verify the stability of the electrode. The obtained results reveal a good stability of electrode in the KCl solution; once in current density terms, the results are quite similar. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-06T15:43:31Z 2019-10-06T15:43:31Z 2019-04-01 |
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/s11581-019-02845-5 Ionics, v. 25, n. 4, p. 1911-1920, 2019. 1862-0760 0947-7047 http://hdl.handle.net/11449/187668 10.1007/s11581-019-02845-5 2-s2.0-85065726525 |
url |
http://dx.doi.org/10.1007/s11581-019-02845-5 http://hdl.handle.net/11449/187668 |
identifier_str_mv |
Ionics, v. 25, n. 4, p. 1911-1920, 2019. 1862-0760 0947-7047 10.1007/s11581-019-02845-5 2-s2.0-85065726525 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Ionics |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1911-1920 |
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_ |
1799964651308449792 |