Visualization and functions of surface defects on carbon nanotubes created by catalytic etching

Autores
Xia, Wei; Yin, Xiuli; Kundu, Shankhamala; Sanchez, Miguel Dario; Birkner, Alexander; Wöll, Christof; Muhler, Martin
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Surface defects were created on carbon nanotubes (CNTs) by catalytic steam gasification or catalytic etching with iron as catalysts. The structure and morphology of the etched CNTs were studied by transmission electron microscopy (TEM) and scanning tunneling microscopy (STM). The electronic structure of the etched CNTs was investigated by ultraviolet photoelectron spectroscopy (UPS). The etched CNTs were treated by nitric acid to obtain oxygen-containing functional groups. The amount and the thermal stability of these groups were studied by temperature-resolved X-ray photoelectron spectroscopy (XPS). Temperature-programmed desorption with ammonia as a probe molecule (NH3-TPD) was employed to investigate the interaction of the surface defects with foreign molecules in gas phase. TEM and STM studies disclosed the presence of surface defects especially edge planes on the etched CNTs. Etching of CNTs led to a less pronounced p-p band than the asis CNTs, as evidenced by UPS studies. The XPS and NH3-TPD studies demonstrated that the defects on the CNTs enhanced the reactivity of the exposed surfaces allowing obtaining a higher degree of oxygen functionalization and more active adsorption sites.
Fil: Xia, Wei. Ruhr Universität Bochum; Alemania
Fil: Yin, Xiuli. Ruhr Universität Bochum; Alemania
Fil: Kundu, Shankhamala. Ruhr Universität Bochum; Alemania
Fil: Sanchez, Miguel Dario. Ruhr Universität Bochum; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina
Fil: Birkner, Alexander. Ruhr Universität Bochum; Alemania
Fil: Wöll, Christof. Ruhr Universität Bochum; Alemania
Fil: Muhler, Martin. Ruhr Universität Bochum; Alemania
Materia
ETCHED CNTs
CATALYTIC ETCHING
SUSRACE DEFECTS
OXYGEN FUNCTIONALITATION
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/103312
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/103312
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Visualization and functions of surface defects on carbon nanotubes created by catalytic etchingXia, WeiYin, XiuliKundu, ShankhamalaSanchez, Miguel DarioBirkner, AlexanderWöll, ChristofMuhler, MartinETCHED CNTsCATALYTIC ETCHINGSUSRACE DEFECTSOXYGEN FUNCTIONALITATIONhttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2Surface defects were created on carbon nanotubes (CNTs) by catalytic steam gasification or catalytic etching with iron as catalysts. The structure and morphology of the etched CNTs were studied by transmission electron microscopy (TEM) and scanning tunneling microscopy (STM). The electronic structure of the etched CNTs was investigated by ultraviolet photoelectron spectroscopy (UPS). The etched CNTs were treated by nitric acid to obtain oxygen-containing functional groups. The amount and the thermal stability of these groups were studied by temperature-resolved X-ray photoelectron spectroscopy (XPS). Temperature-programmed desorption with ammonia as a probe molecule (NH3-TPD) was employed to investigate the interaction of the surface defects with foreign molecules in gas phase. TEM and STM studies disclosed the presence of surface defects especially edge planes on the etched CNTs. Etching of CNTs led to a less pronounced p-p band than the asis CNTs, as evidenced by UPS studies. The XPS and NH3-TPD studies demonstrated that the defects on the CNTs enhanced the reactivity of the exposed surfaces allowing obtaining a higher degree of oxygen functionalization and more active adsorption sites.Fil: Xia, Wei. Ruhr Universität Bochum; AlemaniaFil: Yin, Xiuli. Ruhr Universität Bochum; AlemaniaFil: Kundu, Shankhamala. Ruhr Universität Bochum; AlemaniaFil: Sanchez, Miguel Dario. Ruhr Universität Bochum; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; ArgentinaFil: Birkner, Alexander. Ruhr Universität Bochum; AlemaniaFil: Wöll, Christof. Ruhr Universität Bochum; AlemaniaFil: Muhler, Martin. Ruhr Universität Bochum; AlemaniaPergamon-Elsevier Science Ltd2011-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/103312Xia, Wei; Yin, Xiuli; Kundu, Shankhamala; Sanchez, Miguel Dario; Birkner, Alexander; et al.; Visualization and functions of surface defects on carbon nanotubes created by catalytic etching; Pergamon-Elsevier Science Ltd; Carbon; 49; 1; 1-2011; 299-3050008-6223CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0008622310006718info:eu-repo/semantics/altIdentifier/doi/10.1016/j.carbon.2010.09.025info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:21:40Zoai:ri.conicet.gov.ar:11336/103312instacron: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:34982025-10-22 11:21:41.006CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Visualization and functions of surface defects on carbon nanotubes created by catalytic etching
title Visualization and functions of surface defects on carbon nanotubes created by catalytic etching
spellingShingle Visualization and functions of surface defects on carbon nanotubes created by catalytic etching
Xia, Wei
ETCHED CNTs
CATALYTIC ETCHING
SUSRACE DEFECTS
OXYGEN FUNCTIONALITATION
title_short Visualization and functions of surface defects on carbon nanotubes created by catalytic etching
title_full Visualization and functions of surface defects on carbon nanotubes created by catalytic etching
title_fullStr Visualization and functions of surface defects on carbon nanotubes created by catalytic etching
title_full_unstemmed Visualization and functions of surface defects on carbon nanotubes created by catalytic etching
title_sort Visualization and functions of surface defects on carbon nanotubes created by catalytic etching
dc.creator.none.fl_str_mv Xia, Wei
Yin, Xiuli
Kundu, Shankhamala
Sanchez, Miguel Dario
Birkner, Alexander
Wöll, Christof
Muhler, Martin
author Xia, Wei
author_facet Xia, Wei
Yin, Xiuli
Kundu, Shankhamala
Sanchez, Miguel Dario
Birkner, Alexander
Wöll, Christof
Muhler, Martin
author_role author
author2 Yin, Xiuli
Kundu, Shankhamala
Sanchez, Miguel Dario
Birkner, Alexander
Wöll, Christof
Muhler, Martin
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv ETCHED CNTs
CATALYTIC ETCHING
SUSRACE DEFECTS
OXYGEN FUNCTIONALITATION
topic ETCHED CNTs
CATALYTIC ETCHING
SUSRACE DEFECTS
OXYGEN FUNCTIONALITATION
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Surface defects were created on carbon nanotubes (CNTs) by catalytic steam gasification or catalytic etching with iron as catalysts. The structure and morphology of the etched CNTs were studied by transmission electron microscopy (TEM) and scanning tunneling microscopy (STM). The electronic structure of the etched CNTs was investigated by ultraviolet photoelectron spectroscopy (UPS). The etched CNTs were treated by nitric acid to obtain oxygen-containing functional groups. The amount and the thermal stability of these groups were studied by temperature-resolved X-ray photoelectron spectroscopy (XPS). Temperature-programmed desorption with ammonia as a probe molecule (NH3-TPD) was employed to investigate the interaction of the surface defects with foreign molecules in gas phase. TEM and STM studies disclosed the presence of surface defects especially edge planes on the etched CNTs. Etching of CNTs led to a less pronounced p-p band than the asis CNTs, as evidenced by UPS studies. The XPS and NH3-TPD studies demonstrated that the defects on the CNTs enhanced the reactivity of the exposed surfaces allowing obtaining a higher degree of oxygen functionalization and more active adsorption sites.
Fil: Xia, Wei. Ruhr Universität Bochum; Alemania
Fil: Yin, Xiuli. Ruhr Universität Bochum; Alemania
Fil: Kundu, Shankhamala. Ruhr Universität Bochum; Alemania
Fil: Sanchez, Miguel Dario. Ruhr Universität Bochum; Alemania. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Física del Sur. Universidad Nacional del Sur. Departamento de Física. Instituto de Física del Sur; Argentina
Fil: Birkner, Alexander. Ruhr Universität Bochum; Alemania
Fil: Wöll, Christof. Ruhr Universität Bochum; Alemania
Fil: Muhler, Martin. Ruhr Universität Bochum; Alemania
description Surface defects were created on carbon nanotubes (CNTs) by catalytic steam gasification or catalytic etching with iron as catalysts. The structure and morphology of the etched CNTs were studied by transmission electron microscopy (TEM) and scanning tunneling microscopy (STM). The electronic structure of the etched CNTs was investigated by ultraviolet photoelectron spectroscopy (UPS). The etched CNTs were treated by nitric acid to obtain oxygen-containing functional groups. The amount and the thermal stability of these groups were studied by temperature-resolved X-ray photoelectron spectroscopy (XPS). Temperature-programmed desorption with ammonia as a probe molecule (NH3-TPD) was employed to investigate the interaction of the surface defects with foreign molecules in gas phase. TEM and STM studies disclosed the presence of surface defects especially edge planes on the etched CNTs. Etching of CNTs led to a less pronounced p-p band than the asis CNTs, as evidenced by UPS studies. The XPS and NH3-TPD studies demonstrated that the defects on the CNTs enhanced the reactivity of the exposed surfaces allowing obtaining a higher degree of oxygen functionalization and more active adsorption sites.
publishDate 2011
dc.date.none.fl_str_mv 2011-01
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/11336/103312
Xia, Wei; Yin, Xiuli; Kundu, Shankhamala; Sanchez, Miguel Dario; Birkner, Alexander; et al.; Visualization and functions of surface defects on carbon nanotubes created by catalytic etching; Pergamon-Elsevier Science Ltd; Carbon; 49; 1; 1-2011; 299-305
0008-6223
CONICET Digital
CONICET
url http://hdl.handle.net/11336/103312
identifier_str_mv Xia, Wei; Yin, Xiuli; Kundu, Shankhamala; Sanchez, Miguel Dario; Birkner, Alexander; et al.; Visualization and functions of surface defects on carbon nanotubes created by catalytic etching; Pergamon-Elsevier Science Ltd; Carbon; 49; 1; 1-2011; 299-305
0008-6223
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0008622310006718
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.carbon.2010.09.025
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
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
_version_ 1846781723622244352
score 12.982451

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