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Kleiman, A.; Márquez, A.; Vera, M.L.; Meichtry, J.M.; Litter, M.I. "Photocatalytic activity of TiO2 thin films deposited by cathodic arc" (2011) Applied Catalysis B: Environmental. 101(3-4):676-681
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Abstract:

In this work, the photocatalytic activity and the kinetic behavior of anatase TiO2 films deposited by cathodic arc (CA films) on glass substrates are reported and compared with those of TiO2 Degussa P-25 films obtained by dip-coating immersion (DC films). The mass density of films, determined by X-ray reflectometry was 20% lower for DC films compared with CA films, indicating a higher porosity of DC samples. The activity was evaluated from the efficiency to reduce Cr(VI) in the presence of EDTA. Although the response of CA films resulted lower compared with that of P-25 films of the same TiO2 content (e.g. 90% vs. 50% Cr(VI) reduction after 180min irradiation for samples with 0.03mgcm-2 of TiO2), a fact associated to the lower porosity, adhesion properties of the new materials were much better. CA film photoactivity improved by increasing the coating thickness; after 180min, a sample with 0.03mgcm-2 of TiO2 presented 50% of Cr(VI) reduction vs. 80% for a sample with 0.28mgcm-2. These photocatalysts, whose preparation is simple and affordable, are very promising to be used as immobilized materials in photoreactors for the treatment of pollutants in gaseous and aqueous systems. © 2010 Elsevier B.V.

Registro:

Documento: Artículo
Título:Photocatalytic activity of TiO2 thin films deposited by cathodic arc
Autor:Kleiman, A.; Márquez, A.; Vera, M.L.; Meichtry, J.M.; Litter, M.I.
Filiación:Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
Instituto de Física del Plasma, Conicet, fcen, Universidad de Buenos Aires, Ciudad Universitaria Pab. I, 1428 Buenos Aires, Argentina
Facultad de Ciencias Exactas, Químicas y Naturales, Universidad Nacional de Misiones, Félix de Azara 1552, 3300 Posadas, Misiones, Argentina
Gerencia Química, Comisión Nacional de Energía Atómica, Av. Gral. Paz 1499, 1650 San Martín, Prov. de Buenos Aires, Argentina
Universidad Nacional de Gral, San Martín, Peatonal Belgrano 3563, 1650 San Martín, Prov. de Buenos Aires, Argentina
Palabras clave:Cathodic arc deposition; Cr(VI) photocatalytic reduction; Heterogeneous photocatalysis; Thin films; TiO2; Adhesion properties; Anatase TiO; Aqueous system; Cathodic arc; Cathodic arc deposition; Coating thickness; Cr reductions; Degussa; Dip coating; Glass substrates; Heterogeneous photocatalysis; Kinetic behavior; Mass densities; New material; Photoactivity; Photocatalytic activities; Photocatalytic reduction; Photoreactors; TiO; X-ray reflectometry; Chromium compounds; Coatings; Photocatalysis; Substrates; Thickness measurement; Thin films; Titanium dioxide; Vapor deposition; Deposition
Año:2011
Volumen:101
Número:3-4
Página de inicio:676
Página de fin:681
DOI: http://dx.doi.org/10.1016/j.apcatb.2010.11.009
Título revista:Applied Catalysis B: Environmental
Título revista abreviado:Appl. Catal. B Environ.
ISSN:09263373
CODEN:ACBEE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09263373_v101_n3-4_p676_Kleiman

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Citas:

---------- APA ----------
Kleiman, A., Márquez, A., Vera, M.L., Meichtry, J.M. & Litter, M.I. (2011) . Photocatalytic activity of TiO2 thin films deposited by cathodic arc. Applied Catalysis B: Environmental, 101(3-4), 676-681.
http://dx.doi.org/10.1016/j.apcatb.2010.11.009
---------- CHICAGO ----------
Kleiman, A., Márquez, A., Vera, M.L., Meichtry, J.M., Litter, M.I. "Photocatalytic activity of TiO2 thin films deposited by cathodic arc" . Applied Catalysis B: Environmental 101, no. 3-4 (2011) : 676-681.
http://dx.doi.org/10.1016/j.apcatb.2010.11.009
---------- MLA ----------
Kleiman, A., Márquez, A., Vera, M.L., Meichtry, J.M., Litter, M.I. "Photocatalytic activity of TiO2 thin films deposited by cathodic arc" . Applied Catalysis B: Environmental, vol. 101, no. 3-4, 2011, pp. 676-681.
http://dx.doi.org/10.1016/j.apcatb.2010.11.009
---------- VANCOUVER ----------
Kleiman, A., Márquez, A., Vera, M.L., Meichtry, J.M., Litter, M.I. Photocatalytic activity of TiO2 thin films deposited by cathodic arc. Appl. Catal. B Environ. 2011;101(3-4):676-681.
http://dx.doi.org/10.1016/j.apcatb.2010.11.009