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Optimization of parameters for the preparation of Au/TiO2 with photodegradation of NPE-10 in aqueous solution / C.-B. Feng in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 48, N° 3/2011 (05/2011)
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Titre : Optimization of parameters for the preparation of Au/TiO2 with photodegradation of NPE-10 in aqueous solution Type de document : texte imprimé Auteurs : C.-B. Feng, Auteur ; L. Chen, Auteur ; Z.-P. Du, Auteur Année de publication : 2011 Article en page(s) : p. 200-204 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Surfactants Tags : Au/TiO2 'Déposition-précipitation urée' (DP-urée) 'Méthode Taguchi' 'Réponse lumière visible' Nanoparticule NPE-10 Photodégradation Index. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : The degradation in aqueous solution of nonionic surfactant, nonylphenyl poly(oxyethylene)ethers (NPE-10), which was photocatalyzed by Au/TiO2nanoparticles has been studied. The particles were obtained using modified deposition-precipitation with Urea (DP Urea). The Taguchi method was implemented successfully to optimize the photoactivity for Au/TiO2photocatalyst. The optimized catalyst was characterized by XRD, BET, TEM, XPS and UV-visible absorption spectra techniques. It was found that Au3+/Ti4+molar ratio was the main parameter having significant effect on photocatalytic activity. Under optimal conditions, the observed Au nano-particle size and distributions indicate, that smaller gold nanoparticles (*1.8 nm diameter) were obtained, and the existing of Au particles promote the photoadsorption of oxygen on the surface of photocatalysts. Both are responsible for the significantly enhanced catalytic activity of commercial TiO2(pure P-25) toward the photodegradation of NPE-10-probably by increasing the rate of production of separated electrons and holes. Note de contenu : - EXPERIMENTAL : Preparation of photocatalysts and measurement of photocatalytic activity - Orthogonal array and characterization of photocatalyst.
- RESULTS AND DISCUSSION : Taguchi design and analysis of variance - Prediction and confirmation of properties - Characterization of Au/TiO2 (Structural analysis of the catalyst - Optical absorption properties ofphotocatalyst).Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11700
in TENSIDE, SURFACTANTS, DETERGENTS > Vol. 48, N° 3/2011 (05/2011) . - p. 200-204[article]Réservation
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