Photocatalytic degradation of oxalic and dichloroacetic acid on TiO2 coated metal substrates

Autores
Ivanova, Irina; Schneider, Jenny; Gutzmann, Henning; Kliemann, Jan Olliver; Gartner, Frank; Klassen, Thomas; Bahnemann, Detlef; Mendive, Cecilia Beatriz
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The photocatalytic activity of TiO2 immobilized on three different metal substrates (stainless steel, copper and titanium) has been investigated using dichloroacetic (DCA) and oxalic acid (OA) as model compounds. The TiO2 immobilization was realized by a novel process of Cold Spraying. The photocatalytic degradation experiments were performed in two cycles on every TiO2-coated metal substrate following two methodologies: (a) the same acid, i.e., OA or DCA, was degraded in the first and in the second cycle, and (b) one acid was used in the first cycle and the other acid in the second. OA was found to be more efficiently photocatalytically degraded than DCA; moreover, OA helps for the regeneration of the surface when employed after DCA. The use of copper as a substrate material was found to be photochemically active releasing basic species to the aqueous solution. Stainless steel and titanium are therefore less interfering choices to carry out mechanistic studies or, eventually, for environmental applications. The photonic efficiencies of the TiO2 particles immobilized on the three different metallic supports were compared to those found for TiO2 in an aqueous suspension. From the viewpoint of the amount of the employed photocatalyst, the TiO2-coated metal substrates are significantly more efficient for the degradation of OA than a highly efficient TiO2 suspension (Evonik P25), which content of nanoparticulate photocatalyst was enormously higher. Furthermore, OA and DCA can be completely mineralized at the supported catalyst
Fil: Ivanova, Irina. Leibniz Universitaet Hannover; Armenia
Fil: Schneider, Jenny. Leibniz Universitaet Hannover; Alemania
Fil: Gutzmann, Henning. Universitat Hamburg; Alemania
Fil: Kliemann, Jan Olliver. Universitat Hamburg; Alemania
Fil: Gartner, Frank. Universitat Hamburg; Alemania
Fil: Klassen, Thomas. Universitat Hamburg; Alemania
Fil: Bahnemann, Detlef. Leibniz Universitaet Hannover; Alemania
Fil: Mendive, Cecilia Beatriz. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Heterogeneous Photocatalysis
Tio2
Oxalic Acid
Dichloroacetic Acid
Cold Gas Spraying
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:11336/25128
Acceder
id CONICETDig_c2ce0ee0a514488e4845fd32670a6153
oai_identifier_str oai:ri.conicet.gov.ar:11336/25128
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Photocatalytic degradation of oxalic and dichloroacetic acid on TiO2 coated metal substratesIvanova, IrinaSchneider, JennyGutzmann, HenningKliemann, Jan OlliverGartner, FrankKlassen, ThomasBahnemann, DetlefMendive, Cecilia BeatrizHeterogeneous PhotocatalysisTio2Oxalic AcidDichloroacetic AcidCold Gas Sprayinghttps://purl.org/becyt/ford/2.10https://purl.org/becyt/ford/2The photocatalytic activity of TiO2 immobilized on three different metal substrates (stainless steel, copper and titanium) has been investigated using dichloroacetic (DCA) and oxalic acid (OA) as model compounds. The TiO2 immobilization was realized by a novel process of Cold Spraying. The photocatalytic degradation experiments were performed in two cycles on every TiO2-coated metal substrate following two methodologies: (a) the same acid, i.e., OA or DCA, was degraded in the first and in the second cycle, and (b) one acid was used in the first cycle and the other acid in the second. OA was found to be more efficiently photocatalytically degraded than DCA; moreover, OA helps for the regeneration of the surface when employed after DCA. The use of copper as a substrate material was found to be photochemically active releasing basic species to the aqueous solution. Stainless steel and titanium are therefore less interfering choices to carry out mechanistic studies or, eventually, for environmental applications. The photonic efficiencies of the TiO2 particles immobilized on the three different metallic supports were compared to those found for TiO2 in an aqueous suspension. From the viewpoint of the amount of the employed photocatalyst, the TiO2-coated metal substrates are significantly more efficient for the degradation of OA than a highly efficient TiO2 suspension (Evonik P25), which content of nanoparticulate photocatalyst was enormously higher. Furthermore, OA and DCA can be completely mineralized at the supported catalystFil: Ivanova, Irina. Leibniz Universitaet Hannover; ArmeniaFil: Schneider, Jenny. Leibniz Universitaet Hannover; AlemaniaFil: Gutzmann, Henning. Universitat Hamburg; AlemaniaFil: Kliemann, Jan Olliver. Universitat Hamburg; AlemaniaFil: Gartner, Frank. Universitat Hamburg; AlemaniaFil: Klassen, Thomas. Universitat Hamburg; AlemaniaFil: Bahnemann, Detlef. Leibniz Universitaet Hannover; AlemaniaFil: Mendive, Cecilia Beatriz. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaElsevier Science2013-03-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/25128Ivanova, Irina; Schneider, Jenny; Gutzmann, Henning; Kliemann, Jan Olliver; Gartner, Frank; et al.; Photocatalytic degradation of oxalic and dichloroacetic acid on TiO2 coated metal substrates; Elsevier Science; Catalysis Today; 209; 6-3-2013; 84-900920-5861CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0920586113000394info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cattod.2012.12.019info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:55:42Zoai:ri.conicet.gov.ar:11336/25128instacron: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:34982025-09-03 09:55:42.6CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Photocatalytic degradation of oxalic and dichloroacetic acid on TiO2 coated metal substrates
title Photocatalytic degradation of oxalic and dichloroacetic acid on TiO2 coated metal substrates
spellingShingle Photocatalytic degradation of oxalic and dichloroacetic acid on TiO2 coated metal substrates
Ivanova, Irina
Heterogeneous Photocatalysis
Tio2
Oxalic Acid
Dichloroacetic Acid
Cold Gas Spraying
title_short Photocatalytic degradation of oxalic and dichloroacetic acid on TiO2 coated metal substrates
title_full Photocatalytic degradation of oxalic and dichloroacetic acid on TiO2 coated metal substrates
title_fullStr Photocatalytic degradation of oxalic and dichloroacetic acid on TiO2 coated metal substrates
title_full_unstemmed Photocatalytic degradation of oxalic and dichloroacetic acid on TiO2 coated metal substrates
title_sort Photocatalytic degradation of oxalic and dichloroacetic acid on TiO2 coated metal substrates
dc.creator.none.fl_str_mv Ivanova, Irina
Schneider, Jenny
Gutzmann, Henning
Kliemann, Jan Olliver
Gartner, Frank
Klassen, Thomas
Bahnemann, Detlef
Mendive, Cecilia Beatriz
author Ivanova, Irina
author_facet Ivanova, Irina
Schneider, Jenny
Gutzmann, Henning
Kliemann, Jan Olliver
Gartner, Frank
Klassen, Thomas
Bahnemann, Detlef
Mendive, Cecilia Beatriz
author_role author
author2 Schneider, Jenny
Gutzmann, Henning
Kliemann, Jan Olliver
Gartner, Frank
Klassen, Thomas
Bahnemann, Detlef
Mendive, Cecilia Beatriz
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Heterogeneous Photocatalysis
Tio2
Oxalic Acid
Dichloroacetic Acid
Cold Gas Spraying
topic Heterogeneous Photocatalysis
Tio2
Oxalic Acid
Dichloroacetic Acid
Cold Gas Spraying
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.10
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The photocatalytic activity of TiO2 immobilized on three different metal substrates (stainless steel, copper and titanium) has been investigated using dichloroacetic (DCA) and oxalic acid (OA) as model compounds. The TiO2 immobilization was realized by a novel process of Cold Spraying. The photocatalytic degradation experiments were performed in two cycles on every TiO2-coated metal substrate following two methodologies: (a) the same acid, i.e., OA or DCA, was degraded in the first and in the second cycle, and (b) one acid was used in the first cycle and the other acid in the second. OA was found to be more efficiently photocatalytically degraded than DCA; moreover, OA helps for the regeneration of the surface when employed after DCA. The use of copper as a substrate material was found to be photochemically active releasing basic species to the aqueous solution. Stainless steel and titanium are therefore less interfering choices to carry out mechanistic studies or, eventually, for environmental applications. The photonic efficiencies of the TiO2 particles immobilized on the three different metallic supports were compared to those found for TiO2 in an aqueous suspension. From the viewpoint of the amount of the employed photocatalyst, the TiO2-coated metal substrates are significantly more efficient for the degradation of OA than a highly efficient TiO2 suspension (Evonik P25), which content of nanoparticulate photocatalyst was enormously higher. Furthermore, OA and DCA can be completely mineralized at the supported catalyst
Fil: Ivanova, Irina. Leibniz Universitaet Hannover; Armenia
Fil: Schneider, Jenny. Leibniz Universitaet Hannover; Alemania
Fil: Gutzmann, Henning. Universitat Hamburg; Alemania
Fil: Kliemann, Jan Olliver. Universitat Hamburg; Alemania
Fil: Gartner, Frank. Universitat Hamburg; Alemania
Fil: Klassen, Thomas. Universitat Hamburg; Alemania
Fil: Bahnemann, Detlef. Leibniz Universitaet Hannover; Alemania
Fil: Mendive, Cecilia Beatriz. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description The photocatalytic activity of TiO2 immobilized on three different metal substrates (stainless steel, copper and titanium) has been investigated using dichloroacetic (DCA) and oxalic acid (OA) as model compounds. The TiO2 immobilization was realized by a novel process of Cold Spraying. The photocatalytic degradation experiments were performed in two cycles on every TiO2-coated metal substrate following two methodologies: (a) the same acid, i.e., OA or DCA, was degraded in the first and in the second cycle, and (b) one acid was used in the first cycle and the other acid in the second. OA was found to be more efficiently photocatalytically degraded than DCA; moreover, OA helps for the regeneration of the surface when employed after DCA. The use of copper as a substrate material was found to be photochemically active releasing basic species to the aqueous solution. Stainless steel and titanium are therefore less interfering choices to carry out mechanistic studies or, eventually, for environmental applications. The photonic efficiencies of the TiO2 particles immobilized on the three different metallic supports were compared to those found for TiO2 in an aqueous suspension. From the viewpoint of the amount of the employed photocatalyst, the TiO2-coated metal substrates are significantly more efficient for the degradation of OA than a highly efficient TiO2 suspension (Evonik P25), which content of nanoparticulate photocatalyst was enormously higher. Furthermore, OA and DCA can be completely mineralized at the supported catalyst
publishDate 2013
dc.date.none.fl_str_mv 2013-03-06
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/11336/25128
Ivanova, Irina; Schneider, Jenny; Gutzmann, Henning; Kliemann, Jan Olliver; Gartner, Frank; et al.; Photocatalytic degradation of oxalic and dichloroacetic acid on TiO2 coated metal substrates; Elsevier Science; Catalysis Today; 209; 6-3-2013; 84-90
0920-5861
CONICET Digital
CONICET
url http://hdl.handle.net/11336/25128
identifier_str_mv Ivanova, Irina; Schneider, Jenny; Gutzmann, Henning; Kliemann, Jan Olliver; Gartner, Frank; et al.; Photocatalytic degradation of oxalic and dichloroacetic acid on TiO2 coated metal substrates; Elsevier Science; Catalysis Today; 209; 6-3-2013; 84-90
0920-5861
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0920586113000394
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cattod.2012.12.019
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 Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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_ 1842269361576869888
score 13.13397

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