| Title | Nanocrystalline TiO2 based films onto fibers for photocatalytic degradation of organic dye in aqueous solution |
| Abstract | Nanocrystalline titania (TiO2) synthesized via sol-gel, by using an alkoxide precursor were deposited onto
commercially available silica and alumina fibers, namely E-Glass and Nextel 650, respectively. Different
processing conditions and material preparation parameters, such as amount of TiO2, film composition and
annealing temperature were tested in order to obtain nanocrystalline TiO2 with different morphological
and structural characteristics. The materials were characterized by scanning electron microscopy (SEM),
X-ray diffraction (XRD), and the Brunauer, Emmett, and Teller (BET) surface area measurements. The
photocatalytic activity of the obtained coated fibers was investigated by monitoring the degradation
of a model molecule, an azo dye (Methyl Red), under UV irradiation in aqueous solution. The detected
photocatalytic performance of the sol-gel derived nanocrystalline TiO2 was explained on the basis of
mechanism associated to the photocatalytic decomposition of organic molecules using semiconductor
oxides and accounted for the structural and morphological characteristics of the TiO2 based coating. The
materials with the most suited characteristics for photocatalysis were used to scale up the deposition
onto a larger sample of fiber and then tested in a photocatalytic reactor. A commercially available TiO2
standard material (TiO2 P25 Degussa) was used as reference, in order to ultimately assess the viability of
the coating process for real application. |
| Source | Applied catalysis. B, Environmental (Print) 121-122, pp. 190–197 |
| Keywords | TiO2 colloidal nanocrystalsTiO2 Degussa P25Supported nano-sized TiO2Degradation of organic dye |
| Journal | Applied catalysis. B, Environmental (Print) |
| Editor | Elsevier, Amsterdam ;, Paesi Bassi |
| Year | 2012 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.apcatb.2012.03.019 |
| Authors | 2) Panniello A., 2) Curri L., 4) Diso D., 4) Licciulli A., 1) Locaputo V., 2-3) Agostiano A., 2) Comparelli R., 1) Mascolo G. |
| Text | 192610 2012 10.1016/j.apcatb.2012.03.019 TiO2 colloidal nanocrystals TiO2 Degussa P25 Supported nano sized TiO2 Degradation of organic dye Nanocrystalline TiO2 based films onto fibers for photocatalytic degradation of organic dye in aqueous solution 2 Panniello A., 2 Curri L., 4 Diso D., 4 Licciulli A., 1 Locaputo V., 2 3 Agostiano A., 2 Comparelli R., 1 Mascolo G. 1 CNR IRSA Istituto di Ricerca sulle Acque, Bari Division, Via De Blasio 5, I 70132 Bari, Italy 2 CNR IPCF Istituto per i Processi Chimici e Fisici Bari Division, c/o Dip. Chimica, Via Orabona 4, I 70126 Bari, Italy 3 Universita di Bari Dip. Chimica, Via Orabona 4, I 70126 Bari, Italy 4 Dipartimento Ingegneria dell Innovazione, Universita di Lecce, Via Monteroni, 73100 Lecce, Italy Nanocrystalline titania TiO2 synthesized via sol gel, by using an alkoxide precursor were deposited onto commercially available silica and alumina fibers, namely E Glass and Nextel 650, respectively. Different processing conditions and material preparation parameters, such as amount of TiO2, film composition and annealing temperature were tested in order to obtain nanocrystalline TiO2 with different morphological and structural characteristics. The materials were characterized by scanning electron microscopy SEM , X ray diffraction XRD , and the Brunauer, Emmett, and Teller BET surface area measurements. The photocatalytic activity of the obtained coated fibers was investigated by monitoring the degradation of a model molecule, an azo dye Methyl Red , under UV irradiation in aqueous solution. The detected photocatalytic performance of the sol gel derived nanocrystalline TiO2 was explained on the basis of mechanism associated to the photocatalytic decomposition of organic molecules using semiconductor oxides and accounted for the structural and morphological characteristics of the TiO2 based coating. The materials with the most suited characteristics for photocatalysis were used to scale up the deposition onto a larger sample of fiber and then tested in a photocatalytic reactor. A commercially available TiO2 standard material TiO2 P25 Degussa was used as reference, in order to ultimately assess the viability of the coating process for real application. 121 122 Published version Articolo in rivista Elsevier 0926 3373 Applied catalysis. B, Environmental Print Applied catalysis. B, Environmental Print Appl. catal., B Environ. Print Applied catalysis. Print angela.agostiano AGOSTIANO ANGELA annamaria.panniello PANNIELLO ANNAMARIA marialucia.curri CURRI MARIA LUCIA vito.locaputo LOCAPUTO VITO roberto.comparelli COMPARELLI ROBERTO giuseppe.mascolo MASCOLO GIUSEPPE MD.P01.022.001 Materiali nanostrutturati e molecole biologiche per strutture organizzate TA.P07.002.006 Trattamenti avanzati di ossidazione |
