Abstract

Two different nanosized TiO2-based catalysts supported onto glass with tailored photocatalytic propertiesupon irradiation by UV light were successfully employed for the degradation of nalidixid acid, awidely diffused antibacterial agent of environmental relevance known to be non-biodegradable. Anataserod-like TiO2 nanocrystals (TiO2NRs) and a semiconductor oxide-noble metal nanocomposite TiO2 NRs/Ag nanoparticles (NPs), synthesized by colloidal chemistry routes, were cast onto glass slide andemployed as photocatalysts. A commercially available catalyst (TiO2 P25), also immobilized onto a glassslide, was used as a reference material. It was found that both TiO2 NRs/Ag NPs composite and TiO2 NRsdemonstrated a photocatalytic efficiency significantly higher than the reference TiO2 P25. Specifically,TiO2 NRs/Ag NPs showed a photoactivity in nalidixic acid degradation 14 times higher than TiO2 P25and 4 times higher than bare TiO2 NRs in the first 60 min of reaction. Several by-products were identifiedby HPLC-MS along the nalidixic acid degradation, thus getting useful insight on the degradation pathway.All the identified by-products resulted completely removed after 6 h of reaction

Autore Pugliese

• Sibillano Teresa , Mascolo Giuseppe , Comparelli Roberto

Tutti gli autori

• Petronella F.; Diomede S.; Fanizza E.; Mascolo G.; Sibilliano T.; Agostiano A.; Curri L.; Comparelli R.

Titolo volume/Rivista

Chemosphere

Anno di pubblicazione

2013

ISSN

0045-6535

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

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