Sensitization of TiO2 with phthalocyanines: Part 1. - Photo-oxidations using hydroxoaluminium tricarboxymonoamidephthalocyanine adsorbed on TiO2

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Hydroxoaluminium tricarboxymonoamidephthalocyanine has been adsorbed on TiO2 (Degussa P-25) particles. Water suspensions and solid samples were analysed by SEM and by IR, visible extinction, diffuse reflectance and fluorescence spectroscopy. Visible spectra showed that the dye is not highly aggregat...

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Detalles Bibliográficos
Autor principal: Hodak, J.
Otros Autores: Quinteros, Cynthia Paula, Litter, M.I, San Román, E.
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: Royal Society of Chemistry 1996
Acceso en línea:Registro en Scopus
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Biblioteca Central Dr. Luis F. Leloir (FCEN) de Universidad de Buenos Aires
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100 1 |a Hodak, J. 
245 1 0 |a Sensitization of TiO2 with phthalocyanines: Part 1. - Photo-oxidations using hydroxoaluminium tricarboxymonoamidephthalocyanine adsorbed on TiO2 
260 |b Royal Society of Chemistry  |c 1996 
270 1 0 |m Litter, M.I.; Unidad de Actividad Química, Comisión Nacional de Energía Atómica, Av. del Libertador 8250, 1429 Buenos Aires, Argentina 
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506 |2 openaire  |e Política editorial 
520 3 |a Hydroxoaluminium tricarboxymonoamidephthalocyanine has been adsorbed on TiO2 (Degussa P-25) particles. Water suspensions and solid samples were analysed by SEM and by IR, visible extinction, diffuse reflectance and fluorescence spectroscopy. Visible spectra showed that the dye is not highly aggregated on the surface. Fluorescence was completely quenched by the semiconductor. The sample is stable toward visible irradiation. The photocatalytic activity of the modified semiconductor for transformation of different substrates under visible irradiation in the phthalocyanine Q-band has been tested. While EDTA, oxalic acid and benzoquinone did not show any changes after irradiation, photooxidation of KI, phenol, thiophenol, 4-chlorophenol, hydroquinone and salicylic acid was observed. The analysis of the results as a function of the substrate redox potential suggests that the radical cation of the phthalocyanine, produced by electron injection of the dye into the TiO2 conduction band, is the species responsible for the oxidation of the substrates. No reaction was found, at least for phenol, when TiO2 free of AlTCPc was irradiated under the same conditions.  |l eng 
593 |a INQUIMAE, Facultad de Ciencias Exactas y Naturales, Pabellón 2, 1428 Buenos Aires, Argentina 
593 |a Unidad de Actividad Química, Comisión Nacional de Energía Atómica, Av. del Libertador 8250, 1429 Buenos Aires, Argentina 
700 1 |a Quinteros, Cynthia Paula 
700 1 |a Litter, M.I. 
700 1 |a San Román, E. 
773 0 |d Royal Society of Chemistry, 1996  |g v. 92  |h pp. 5081-5088  |k n. 24  |x 09565000  |t Journal of the Chemical Society - Faraday Transactions 
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856 4 0 |u https://doi.org/10.1039/FT9969205081  |y DOI 
856 4 0 |u https://hdl.handle.net/20.500.12110/paper_09565000_v92_n24_p5081_Hodak  |y Handle 
856 4 0 |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09565000_v92_n24_p5081_Hodak  |y Registro en la Biblioteca Digital 
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962 |a info:eu-repo/semantics/article  |a info:ar-repo/semantics/artículo  |b info:eu-repo/semantics/publishedVersion 
999 |c 64313 

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