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dc.contributor.author
Ivanova, Irina
dc.contributor.author
Schneider, Jenny
dc.contributor.author
Gutzmann, Henning
dc.contributor.author
Kliemann, Jan Olliver
dc.contributor.author
Gartner, Frank
dc.contributor.author
Klassen, Thomas
dc.contributor.author
Bahnemann, Detlef
dc.contributor.author
Mendive, Cecilia Beatriz
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dc.date.available
2017-09-26T16:57:20Z
dc.date.issued
2013-03-06
dc.identifier.citation
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
dc.identifier.issn
0920-5861
dc.identifier.uri
http://hdl.handle.net/11336/25128
dc.description.abstract
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
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Heterogeneous Photocatalysis
dc.subject
Tio2
dc.subject
Oxalic Acid
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Dichloroacetic Acid
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Cold Gas Spraying
dc.subject.classification
Nano-materiales
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dc.subject.classification
Nanotecnología
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Photocatalytic degradation of oxalic and dichloroacetic acid on TiO2 coated metal substrates
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-09-21T18:00:36Z
dc.journal.volume
209
dc.journal.pagination
84-90
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Ivanova, Irina. Leibniz Universitaet Hannover; Armenia
dc.description.fil
Fil: Schneider, Jenny. Leibniz Universitaet Hannover; Alemania
dc.description.fil
Fil: Gutzmann, Henning. Universitat Hamburg; Alemania
dc.description.fil
Fil: Kliemann, Jan Olliver. Universitat Hamburg; Alemania
dc.description.fil
Fil: Gartner, Frank. Universitat Hamburg; Alemania
dc.description.fil
Fil: Klassen, Thomas. Universitat Hamburg; Alemania
dc.description.fil
Fil: Bahnemann, Detlef. Leibniz Universitaet Hannover; Alemania
dc.description.fil
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
dc.journal.title
Catalysis Today
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0920586113000394
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.cattod.2012.12.019
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