Surface modified mesoporous nanocast carbon as a catalyst for aqueous sulfide oxidation and adsorption of the produced polysulfides

Autores
Barrera Diaz, Deicy Amparo; Mendonça, Fernanda Gomes de; de Castro, Arthur Henrique; de Mesquita, João Paulo; Lago, Rochel Montero; Sapag, Manuel Karim
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this work, a mesoporous nanocast carbon prepared using SBA-15 as a template was modified by surface oxidation to produce unique catalysts for sulfide oxidation/elimination from an aqueous medium. Different characterization techniques (BET, SEM, Raman, FTIR, potentiometric titration, elemental analyses, cyclic voltammetry) showed that treatment with concentrated HNO3 at 80 °C for 5, 15 and 30 min attacks the carbon structure creating different oxygen surface functionalities in concentrations varying from 0.4-1.1 mmol g-1 with a small effect on the surface area (1080-1148 m2 g-1) and pore volumes (micropore 0.17-0.20 cm3 g-1 and mesopores 0.36-0.50 cm3 g-1). These materials showed high activities for the oxidation of sulfide in an aqueous medium forming polysulfides, e.g., S2 2-, S3 2- and S4 2-, which are rapidly eliminated from the aqueous medium. These results are discussed regarding efficient sulfide oxidation at redox surface oxygen sites leading to the formation of higher polysulfides followed by adsorption of these relatively large and more hydrophobic molecules into the mesopores.
Fil: Barrera Diaz, Deicy Amparo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich". Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich"; Argentina
Fil: Mendonça, Fernanda Gomes de. Universidade Federal de Minas Gerais; Brasil
Fil: de Castro, Arthur Henrique. Universidade Federal dos Vales do Jequitinhonha e Mucuri; Brasil
Fil: de Mesquita, João Paulo. Universidade Federal dos Vales do Jequitinhonha e Mucuri; Brasil
Fil: Lago, Rochel Montero. Universidade Federal de Minas Gerais; Brasil
Fil: Sapag, Manuel Karim. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich". Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich"; Argentina
Materia
MODIFIED MESOPOROUS NANOCAST
SULFIDE OXIDATION AND ADSORPTION
CHARACTERIZATION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/86515
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/86515
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Surface modified mesoporous nanocast carbon as a catalyst for aqueous sulfide oxidation and adsorption of the produced polysulfidesBarrera Diaz, Deicy AmparoMendonça, Fernanda Gomes dede Castro, Arthur Henriquede Mesquita, João PauloLago, Rochel MonteroSapag, Manuel KarimMODIFIED MESOPOROUS NANOCASTSULFIDE OXIDATION AND ADSORPTIONCHARACTERIZATIONhttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2https://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1In this work, a mesoporous nanocast carbon prepared using SBA-15 as a template was modified by surface oxidation to produce unique catalysts for sulfide oxidation/elimination from an aqueous medium. Different characterization techniques (BET, SEM, Raman, FTIR, potentiometric titration, elemental analyses, cyclic voltammetry) showed that treatment with concentrated HNO3 at 80 °C for 5, 15 and 30 min attacks the carbon structure creating different oxygen surface functionalities in concentrations varying from 0.4-1.1 mmol g-1 with a small effect on the surface area (1080-1148 m2 g-1) and pore volumes (micropore 0.17-0.20 cm3 g-1 and mesopores 0.36-0.50 cm3 g-1). These materials showed high activities for the oxidation of sulfide in an aqueous medium forming polysulfides, e.g., S2 2-, S3 2- and S4 2-, which are rapidly eliminated from the aqueous medium. These results are discussed regarding efficient sulfide oxidation at redox surface oxygen sites leading to the formation of higher polysulfides followed by adsorption of these relatively large and more hydrophobic molecules into the mesopores.Fil: Barrera Diaz, Deicy Amparo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich". Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich"; ArgentinaFil: Mendonça, Fernanda Gomes de. Universidade Federal de Minas Gerais; BrasilFil: de Castro, Arthur Henrique. Universidade Federal dos Vales do Jequitinhonha e Mucuri; BrasilFil: de Mesquita, João Paulo. Universidade Federal dos Vales do Jequitinhonha e Mucuri; BrasilFil: Lago, Rochel Montero. Universidade Federal de Minas Gerais; BrasilFil: Sapag, Manuel Karim. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich". Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich"; ArgentinaRoyal Society of Chemistry2018-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/86515Barrera Diaz, Deicy Amparo; Mendonça, Fernanda Gomes de; de Castro, Arthur Henrique; de Mesquita, João Paulo; Lago, Rochel Montero; et al.; Surface modified mesoporous nanocast carbon as a catalyst for aqueous sulfide oxidation and adsorption of the produced polysulfides; Royal Society of Chemistry; New Journal of Chemistry; 42; 14; 6-2018; 11708-117141144-0546CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1039/C8NJ00922Hinfo:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/content/articlelanding/2018/NJ/C8NJ00922H#!divAbstractinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:46:48Zoai:ri.conicet.gov.ar:11336/86515instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:46:48.484CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Surface modified mesoporous nanocast carbon as a catalyst for aqueous sulfide oxidation and adsorption of the produced polysulfides
title Surface modified mesoporous nanocast carbon as a catalyst for aqueous sulfide oxidation and adsorption of the produced polysulfides
spellingShingle Surface modified mesoporous nanocast carbon as a catalyst for aqueous sulfide oxidation and adsorption of the produced polysulfides
Barrera Diaz, Deicy Amparo
MODIFIED MESOPOROUS NANOCAST
SULFIDE OXIDATION AND ADSORPTION
CHARACTERIZATION
title_short Surface modified mesoporous nanocast carbon as a catalyst for aqueous sulfide oxidation and adsorption of the produced polysulfides
title_full Surface modified mesoporous nanocast carbon as a catalyst for aqueous sulfide oxidation and adsorption of the produced polysulfides
title_fullStr Surface modified mesoporous nanocast carbon as a catalyst for aqueous sulfide oxidation and adsorption of the produced polysulfides
title_full_unstemmed Surface modified mesoporous nanocast carbon as a catalyst for aqueous sulfide oxidation and adsorption of the produced polysulfides
title_sort Surface modified mesoporous nanocast carbon as a catalyst for aqueous sulfide oxidation and adsorption of the produced polysulfides
dc.creator.none.fl_str_mv Barrera Diaz, Deicy Amparo
Mendonça, Fernanda Gomes de
de Castro, Arthur Henrique
de Mesquita, João Paulo
Lago, Rochel Montero
Sapag, Manuel Karim
author Barrera Diaz, Deicy Amparo
author_facet Barrera Diaz, Deicy Amparo
Mendonça, Fernanda Gomes de
de Castro, Arthur Henrique
de Mesquita, João Paulo
Lago, Rochel Montero
Sapag, Manuel Karim
author_role author
author2 Mendonça, Fernanda Gomes de
de Castro, Arthur Henrique
de Mesquita, João Paulo
Lago, Rochel Montero
Sapag, Manuel Karim
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv MODIFIED MESOPOROUS NANOCAST
SULFIDE OXIDATION AND ADSORPTION
CHARACTERIZATION
topic MODIFIED MESOPOROUS NANOCAST
SULFIDE OXIDATION AND ADSORPTION
CHARACTERIZATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In this work, a mesoporous nanocast carbon prepared using SBA-15 as a template was modified by surface oxidation to produce unique catalysts for sulfide oxidation/elimination from an aqueous medium. Different characterization techniques (BET, SEM, Raman, FTIR, potentiometric titration, elemental analyses, cyclic voltammetry) showed that treatment with concentrated HNO3 at 80 °C for 5, 15 and 30 min attacks the carbon structure creating different oxygen surface functionalities in concentrations varying from 0.4-1.1 mmol g-1 with a small effect on the surface area (1080-1148 m2 g-1) and pore volumes (micropore 0.17-0.20 cm3 g-1 and mesopores 0.36-0.50 cm3 g-1). These materials showed high activities for the oxidation of sulfide in an aqueous medium forming polysulfides, e.g., S2 2-, S3 2- and S4 2-, which are rapidly eliminated from the aqueous medium. These results are discussed regarding efficient sulfide oxidation at redox surface oxygen sites leading to the formation of higher polysulfides followed by adsorption of these relatively large and more hydrophobic molecules into the mesopores.
Fil: Barrera Diaz, Deicy Amparo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich". Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich"; Argentina
Fil: Mendonça, Fernanda Gomes de. Universidade Federal de Minas Gerais; Brasil
Fil: de Castro, Arthur Henrique. Universidade Federal dos Vales do Jequitinhonha e Mucuri; Brasil
Fil: de Mesquita, João Paulo. Universidade Federal dos Vales do Jequitinhonha e Mucuri; Brasil
Fil: Lago, Rochel Montero. Universidade Federal de Minas Gerais; Brasil
Fil: Sapag, Manuel Karim. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich". Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto de Física Aplicada "Dr. Jorge Andrés Zgrablich"; Argentina
description In this work, a mesoporous nanocast carbon prepared using SBA-15 as a template was modified by surface oxidation to produce unique catalysts for sulfide oxidation/elimination from an aqueous medium. Different characterization techniques (BET, SEM, Raman, FTIR, potentiometric titration, elemental analyses, cyclic voltammetry) showed that treatment with concentrated HNO3 at 80 °C for 5, 15 and 30 min attacks the carbon structure creating different oxygen surface functionalities in concentrations varying from 0.4-1.1 mmol g-1 with a small effect on the surface area (1080-1148 m2 g-1) and pore volumes (micropore 0.17-0.20 cm3 g-1 and mesopores 0.36-0.50 cm3 g-1). These materials showed high activities for the oxidation of sulfide in an aqueous medium forming polysulfides, e.g., S2 2-, S3 2- and S4 2-, which are rapidly eliminated from the aqueous medium. These results are discussed regarding efficient sulfide oxidation at redox surface oxygen sites leading to the formation of higher polysulfides followed by adsorption of these relatively large and more hydrophobic molecules into the mesopores.
publishDate 2018
dc.date.none.fl_str_mv 2018-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/86515
Barrera Diaz, Deicy Amparo; Mendonça, Fernanda Gomes de; de Castro, Arthur Henrique; de Mesquita, João Paulo; Lago, Rochel Montero; et al.; Surface modified mesoporous nanocast carbon as a catalyst for aqueous sulfide oxidation and adsorption of the produced polysulfides; Royal Society of Chemistry; New Journal of Chemistry; 42; 14; 6-2018; 11708-11714
1144-0546
CONICET Digital
CONICET
url http://hdl.handle.net/11336/86515
identifier_str_mv Barrera Diaz, Deicy Amparo; Mendonça, Fernanda Gomes de; de Castro, Arthur Henrique; de Mesquita, João Paulo; Lago, Rochel Montero; et al.; Surface modified mesoporous nanocast carbon as a catalyst for aqueous sulfide oxidation and adsorption of the produced polysulfides; Royal Society of Chemistry; New Journal of Chemistry; 42; 14; 6-2018; 11708-11714
1144-0546
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1039/C8NJ00922H
info:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/content/articlelanding/2018/NJ/C8NJ00922H#!divAbstract
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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