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

doi:10.1016/j.apcatb.2014.08.043

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

Carcinogenesis and Chemoprevention

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	233-240
Number of pages	8
Journal	Applied Catalysis B: Environmental
Volume	178
DOIs	https://doi.org/10.1016/j.apcatb.2014.08.043
State	Published - 2015

Keywords

Kinetic paths.
LC/MS
Photodegradation
ZnO nanoparticles
o-Toluidine

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Pifferi, V., Cappelletti, G., Ardizzone, S., Falciola, L., Di Bari, C., Spadavecchia, F., Meroni, D., Carrà, A., Cerrato, G., Morandi, S., & Davoli, E. (2015). Photo-mineralization of noxious o-toluidine water pollutant by nano-ZnO: The role of the oxide surface texture on the kinetic path. Applied Catalysis B: Environmental, 178, 233-240. https://doi.org/10.1016/j.apcatb.2014.08.043

Photo-mineralization of noxious o-toluidine water pollutant by nano-ZnO : The role of the oxide surface texture on the kinetic path. / Pifferi, V.; Cappelletti, G.; Ardizzone, S.; Falciola, L.; Di Bari, C.; Spadavecchia, F.; Meroni, D.; Carrà, A.; Cerrato, G.; Morandi, S.; Davoli, E.

In: Applied Catalysis B: Environmental, Vol. 178, 2015, p. 233-240.

Research output: Contribution to journal › Article › peer-review

Pifferi, V, Cappelletti, G, Ardizzone, S, Falciola, L, Di Bari, C, Spadavecchia, F, Meroni, D, Carrà, A, Cerrato, G, Morandi, S & Davoli, E 2015, 'Photo-mineralization of noxious o-toluidine water pollutant by nano-ZnO: The role of the oxide surface texture on the kinetic path', Applied Catalysis B: Environmental, vol. 178, pp. 233-240. https://doi.org/10.1016/j.apcatb.2014.08.043

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abstract = "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.",

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