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SERS monitoring of the catalytic reduction of 4-nitrophenol on Ag-doped titania nanoparticles

Paper ID Volume ID Publish Year Pages File Format Full-Text
45192 46405 2014 4 PDF Available
Title
SERS monitoring of the catalytic reduction of 4-nitrophenol on Ag-doped titania nanoparticles
Abstract

•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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Keywords
SERS; Titania; Silver; Photocatalysis; Pollutant
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SERS monitoring of the catalytic reduction of 4-nitrophenol on Ag-doped titania nanoparticles
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 146, March 2014, Pages 147–150
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
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