| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 45192 | Applied Catalysis B: Environmental | 2014 | 4 Pages |
•We prepared Ag-coated titania nanoparticles by chemical reduction of silver ions with sodium borohydride in colloidal titania.•The Ag/titania colloidal systems were characterized by UV–vis absorption spectroscopy, TEM microscopy and Raman scattering.•The Ag/titania nanoparticles are stable in aqueous dispersion and exhibit SERS efficiency.•The adsorption of 4-nitrophenol on Ag-coated titania was compared with that occurring in pure Ag colloid.•The catalytic photoreduction of adsorbed 4-nitrophenol by UV irradiation was monitored by SERS spectroscopy.
Nitrophenols represent common environmental pollutants because of their toxicity and resistance to microbial degradation. In the present work the SERS (surface-enhanced Raman scattering) spectroscopy has been applied to Ag/titania colloidal nanocomposites to monitor the catalytic reduction of 4-nitrophenol under UV irradiation and identify the reaction products.
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