Utilizza questo identificativo per citare o creare un link a questo documento:
|Titolo:||Solar photoactivity of nano-N-TiO2 from tertiary amine: role of defects and paramagnetic species|
|Autori Unitn:||Scardi, Paolo|
|Anno di pubblicazione:||2010|
|Titolo del periodico:||APPLIED CATALYSIS. B, ENVIRONMENTAL|
|Abstract:||N-doped TiO2 nanocrystals were successfully synthesized by a controlled sol–gel reaction at pH 9 followed by calcinations at 400 ◦C. Triethylamine was used to modulate the N content of the samples. The photocatalytic activity was tested using a solar irradiation source with regard to two different pollutants: NOx (in the gas phase) and methylene blue (MB), deposited onto the oxide film. In the case of MB degradation the disappearance of the (MB) blue colour was measured directly onto the solid, by means of UV–vis-NIR diffuse reflectance spectroscopy. The final mineralization of the organic molecule was assessed by COD determinations. All N-doped samples produce a better removal of both pollutants than the undoped and commercial samples. By coupling structural (by X-ray synchrotron radiation) and morphological (HRTEM, BET, granulometry) characterizations with spectroscopic analyses (EPR and XPS), the presence of paramagnetic centers, defects, edge dislocations and surface states is appreciated and found to affect the material photocatalytic behaviour|
|Appare nelle tipologie:||03.1 Articolo su rivista (Journal article)|
File in questo prodotto:
Non ci sono file associati a questo prodotto.
- PubMed Central loading...
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione