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EnglishIn this work, different TiO2-based systems were synthesized. Specifically, phosphorous was considered as nonmetal dopant into TiO2 structure of the photocatalysts. The doped samples were herein labeled as TiO2-P0.6, TiO2-P0.7, and TiO2-P3, where 0.6, 0.7, and 3 indicate the average atomic phosphorus content into each sample. The physico-chemical properties of the samples were investigated by complementary techniques, including XRD, N2 physisorption at −196 °C, FESEM, EDX, XPS, and (DR)UV-Vis spectroscopies. Then, the samples were tested for the total oxidation of ethylene under two different sources: UVB (wavelength = 312 nm, intensity = 12 W m−2) and UVA (wavelength = 365 nm, intensity = 8 W m−2). The results under UVB source have shown that the most promising catalyst is TiO2-P3 (TOF = 7.5 μmol h−1 g−1, TOS = 160 min) and a positive reactivity trend was observed: the higher the P-content, the higher the reactivity. On the other hand, under the UVA source, the most promising catalyst is TiO2-P0.6 (TOF = 21.3 μmol h−1 g−1, TOS = 160 min). In fact, the samples with higher P-contents decrease their performances at longer TOS, likely due to the surface deposition of carbon-like molecules.
Phosphorous-Based Titania Nanoparticles for the Photocatalytic Abatement of VOCs / Dosa, Melodj; Piumetti, Marco; Bensaid, Samir; Russo, Nunzio. - (2021), pp. 189-208. [10.1007/978-3-030-58934-9_7]
| Titolo: | Phosphorous-Based Titania Nanoparticles for the Photocatalytic Abatement of VOCs | |
| Autori: | ||
| Data di pubblicazione: | 2021 | |
| Titolo del libro: | Nanostructured Catalysts for Environmental Applications | |
| Abstract: | In this work, different TiO2-based systems were synthesized. Specifically, phosphorous was consid...ered as nonmetal dopant into TiO2 structure of the photocatalysts. The doped samples were herein labeled as TiO2-P0.6, TiO2-P0.7, and TiO2-P3, where 0.6, 0.7, and 3 indicate the average atomic phosphorus content into each sample. The physico-chemical properties of the samples were investigated by complementary techniques, including XRD, N2 physisorption at −196 °C, FESEM, EDX, XPS, and (DR)UV-Vis spectroscopies. Then, the samples were tested for the total oxidation of ethylene under two different sources: UVB (wavelength = 312 nm, intensity = 12 W m−2) and UVA (wavelength = 365 nm, intensity = 8 W m−2). The results under UVB source have shown that the most promising catalyst is TiO2-P3 (TOF = 7.5 μmol h−1 g−1, TOS = 160 min) and a positive reactivity trend was observed: the higher the P-content, the higher the reactivity. On the other hand, under the UVA source, the most promising catalyst is TiO2-P0.6 (TOF = 21.3 μmol h−1 g−1, TOS = 160 min). In fact, the samples with higher P-contents decrease their performances at longer TOS, likely due to the surface deposition of carbon-like molecules. | |
| ISBN: | 978-3-030-58933-2 978-3-030-58934-9 | |
| Appare nelle tipologie: | 2.1 Contributo in volume (Capitolo o Saggio) |
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