Regensburg 2016 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 13: Poster: Nanoparticles, Nanocrystals and Composites
CPP 13.10: Poster
Montag, 7. März 2016, 18:15–21:00, Poster B2
Studying visible-light photodegradation of Benzidine azo dye on Titanium dioxide nanotubes using Surface Enhanced Resonance Raman Spectroscopy — •Christine Joy Querebillo1,2, Hoang Khoa Ly1, Ibrahim-Halil Öner1, Ulrich Gernert3, Peter Hildebrandt1, and Inez Marita Weidinger1 — 1Institut für Chemie, PC 14, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany — 2School of Analytical Sciences Adlershof, Humboldt-Universität zu Berlin, IRIS Building, Unter den Linden 6, 10099, Berlin, Germany — 3Zentraleinrichtung Elektronenmikroskopie (ZELMI), Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
Surface Enhanced Resonance Raman Spectroscopy (SERRS) is used to study the photodegradation of an azo dye pollutant, Benzidine-p-aminothiophenolate (BD-PATP), on Titanium dioxide (TiO2) nanotubes. Unlike many degradation studies on TiO2 which use UV light, here, we use visible light to photodegrade BD-PATP on TiO2 of different surface enhancements achieved with different post-anodization heat treatment temperatures (300-500°C). Heating the TiO2 nanotubes at these temperatures improves the crystallinity, as seen in Raman, and affects the morphology of the nanotubes, as seen using scanning electron microscopy.
SERRS was used to confirm the synthesis of BD-PATP on TiO2 from PATP on TiO2 and to monitor the photodegradation of BD-PATP on TiO2. For the latter, we infer on the effect of the surface enhancement of the nanotubes on the photodegradation kinetics.