Highly toxic o-toluidine pollutant was photo-degraded in water by using ZnO nanoparticles. The tested powders were both commercial and laboratory-made, the latter obtained by means of two innovative synthetic procedures. The disappearance and the relative mineralization of the molecule were followed by HPLC/UV and TOC determinations, respectively. Intermediate products were identified by coupling LC/MS of the eluate after 3 h of reaction and ATR-FTIR analyses of the used ZnO powders at the end of photocatalytic tests. Selected degradation paths, characterized by different kinetic degradation rates, can be suggested as a function of the different surface texture, the effective photocatalytic active area and the e−/h+ recombination processes of the ZnO particles.
Photo-mineralization of noxious o-toluidine water pollutant by nano-ZnO : the role of the oxide surface texture on the kinetic path / V. Pifferi, G. Cappelletti, S. Ardizzone, L. Falciola, C. Di Bari, F. Spadavecchia, D. Meroni, A. Carrà, G. Cerrato, S. Morandi, E. Davoli. - In: APPLIED CATALYSIS. B, ENVIRONMENTAL. - ISSN 0926-3373. - 178(2015), pp. 233-240.
|Titolo:||Photo-mineralization of noxious o-toluidine water pollutant by nano-ZnO : the role of the oxide surface texture on the kinetic path|
|Parole Chiave:||ZnO nanoparticles; o-Toluidine; photodegradation; LC/MS; kinetic paths|
|Settore Scientifico Disciplinare:||Settore CHIM/02 - Chimica Fisica|
Settore CHIM/01 - Chimica Analitica
|Data di pubblicazione:||2015|
|Data ahead of print / Data di stampa:||3-set-2014|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1016/j.apcatb.2014.08.043|
|Appare nelle tipologie:||01 - Articolo su periodico|