 |
| Titel |
SERS investigation of coatings on thermal modified titanium dioxide nanoparticles |
| VerfasserIn |
Sayed Amininejad, Reinhard Niessner, Thomas Baumann |
| Konferenz |
EGU General Assembly 2017
|
| Medientyp |
Artikel
|
| Sprache |
en
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250142845
|
| Publikation (Nr.) |
 EGU/EGU2017-6513.pdf |
|
|
|
|
|
| Zusammenfassung |
| Titanium dioxide nanoparticles (TiO2) are progressively manufactured and used in a wide
variety of products such as sunscreens, papers, paints and toothpastes. The increase in the
production and use of Titanium dioxide nanoparticles would escalate the risk for exposure of
the natural environments to these compounds. There are several techniques for identifying
and quantifying nanoparticles and Surface-Enhanced Raman Scattering (SERS) is an
emerging technique which combines raman spectroscopy with nanotechnology. SERS can
also be used to investigate the changes of natural coatings on nanoparticles as an
important factor regarding their environmental fate and biological effects. In this
work, TiO2 P25 nanoparticles are thermally modified at different temperatures to
study the effects of thermal shock on the crystal structure, surface properties and
subsequently the Surface-Enhanced Raman Scattering from 4-Mercaptobenzoic acid
molecules coated on TiO2 nanoparticles has been observed. The results show that
4-Mercaptobenzoic acid molecules coated on nanoparticles exhibit different degree SERS
enhancement on the surface of different nanoparticles modified at different temperatures by
thermal modification method. This research work is expected to be important for
improving SERS performance of TiO2 nanoparticles for characterization of natural
coatings.
Keywords: SERS, TiO2, 4-Mercaptobenzoic acid |
|
|
|
|
|
|