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Photocatalytic activity of combustion synthesized ZrO2 and ZrO2 – TiO2 mixed oxides / Sneha Polisetti in Industrial & engineering chemistry research, Vol. 50 N° 23 (Décembre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 23 (Décembre 2011) . - pp. 12915-12924 Titre : Photocatalytic activity of combustion synthesized ZrO2 and ZrO2 – TiO2 mixed oxides Type de document : texte imprimé Auteurs : Sneha Polisetti, Auteur ; Parag A. Deshpande, Auteur ; Giridhar Madras, Auteur Année de publication : 2012 Article en page(s) : pp. 12915-12924 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Titanium  oxide  Combustion  Photocatalysis Résumé : Tetragonal ZrO2, synthesized by solution combustion technique, was found to be photocatalytically active for the degradation of anionic dyes. The compound was characterized by FT-Raman spectroscopy, X-ray photoelectron spectroscopy, FT-infrared spectroscopy, UV―vis spectroscopy, BET surface area analysis, and zero point charge pH measurement. A high concentration of surface hydroxyl groups was observed over the catalyst, as confirmed by XPS and FTIR. The photocatalytic degradation of orange G, amido black, remazol brilliant blue R, and alizarin cyanine green (ACG) was carried out with this material. The effect of pH, inorganic salts, and H2O2 on the activity of the catalyst was also studied, and it was found that the catalyst maintained its activity at a wide range of pH and in the presence of inorganic salts. Having established that ZrO2 was photocatalytically active, mixed oxide catalysts of TiO2―ZrO2 were also tested for the photocatalytic degradation of ACG, and the 50% ZrO2―TiO2 mixed oxides showed activity that was comparable to the activity of TiO2. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25267449 [article] Photocatalytic activity of combustion synthesized ZrO2 and ZrO2 – TiO2 mixed oxides [texte imprimé] / Sneha Polisetti, Auteur ; Parag A. Deshpande, Auteur ; Giridhar Madras, Auteur . - 2012 . - pp. 12915-12924. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 23 (Décembre 2011) . - pp. 12915-12924 Mots-clés : Titanium  oxide  Combustion  Photocatalysis Résumé : Tetragonal ZrO2, synthesized by solution combustion technique, was found to be photocatalytically active for the degradation of anionic dyes. The compound was characterized by FT-Raman spectroscopy, X-ray photoelectron spectroscopy, FT-infrared spectroscopy, UV―vis spectroscopy, BET surface area analysis, and zero point charge pH measurement. A high concentration of surface hydroxyl groups was observed over the catalyst, as confirmed by XPS and FTIR. The photocatalytic degradation of orange G, amido black, remazol brilliant blue R, and alizarin cyanine green (ACG) was carried out with this material. The effect of pH, inorganic salts, and H2O2 on the activity of the catalyst was also studied, and it was found that the catalyst maintained its activity at a wide range of pH and in the presence of inorganic salts. Having established that ZrO2 was photocatalytically active, mixed oxide catalysts of TiO2―ZrO2 were also tested for the photocatalytic degradation of ACG, and the 50% ZrO2―TiO2 mixed oxides showed activity that was comparable to the activity of TiO2. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25267449