Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Photocatalytic degradation of methyl-red by immobilised nanoparticles of TiO2 and ZnO |
| Abstract | In this work, we report on the degradation of methyl-red (2-(4-Dimethylamino-phenylazo)-benzoic acid C.I. 13020) under UV irradiation in the presence of nanosized ZnO and TiO2. Oxide nanocrystals with controlled size were synthesised by using non-hydrolytic approaches and tested for the photocatalysed degradation. The performances of the immobilised nanoparticles were compared with their commercial counterparts after immobilization onto a solid support. The influence of some experimental conditions, namely pH and dye concentration, were investigated by monitoring the dye decoloration spectrophotometrically. Several intermediate by-products were identified by HPLC-MS, showing that two different mechanisms were operative during the photocatalytic oxidation. |
| Source | Water science and technology 49 (4), pp. 183–188 |
| Journal | Water science and technology |
| Editor | IWA Publishing, London, |
| Year | 2004 |
| Type | Articolo in rivista |
| Authors | R. Comparelli, P.D. Cozzoli, M.L. Curri, A. Agostiano, G. Mascolo, G. Lovecchio |
| Text | 170264 2004 Photocatalytic degradation of methyl red by immobilised nanoparticles of TiO2 and ZnO R. Comparelli, P.D. Cozzoli, M.L. Curri, A. Agostiano, G. Mascolo, G. Lovecchio Dipartimento di Chimica, Universita di Bari, via Orabona 4, I 70126, Bari, Italy E mail csilrc30@area.ba.cnr.it; csildc28@area.ba.cnr.it; agostiano@area.ba.cnr.it CNR IPCF Bari Division c/o Dipartimento di Chimica, Universita di Bari, via Orabona 4, I 70126 Bari, Italy E mail csilmc20@area.ba.cnr.it Istituto di Ricerca Sulle Acque, Consiglio Nazionale delle Ricerche, Via F. De Blasio 5, I 70123 Bari, Italy E mail mascolo@area.ba.cnr.it; giangilov@libero.it In this work, we report on the degradation of methyl red 2 4 Dimethylamino phenylazo benzoic acid C.I. 13020 under UV irradiation in the presence of nanosized ZnO and TiO2. Oxide nanocrystals with controlled size were synthesised by using non hydrolytic approaches and tested for the photocatalysed degradation. The performances of the immobilised nanoparticles were compared with their commercial counterparts after immobilization onto a solid support. The influence of some experimental conditions, namely pH and dye concentration, were investigated by monitoring the dye decoloration spectrophotometrically. Several intermediate by products were identified by HPLC MS, showing that two different mechanisms were operative during the photocatalytic oxidation. 49 Photocatalytic degradation of methyl red by immobilised nanoparticles of TiO2 and ZnO 2004_Wat_Sci_Technol.pdf Articolo in rivista IWA Publishing 0273 1223 Water science and technology Water science and technology Water science and technology. Water sci. technol. roberto.comparelli COMPARELLI ROBERTO pantaleodavidecozzoli COZZOLI DAVIDE angela.agostiano AGOSTIANO ANGELA marialucia.curri CURRI MARIA LUCIA giuseppe.mascolo MASCOLO GIUSEPPE MD.P01.011.001 Strutture ad alta organizzazione gerarchica realizzate mediante approcci di tipo biologico e chimico, per lo studio e la progettazione di materiali e sistemi ibridi di interesse fotochimico |