Dresden 2026 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 15: Emerging Topics in Chemical and Polymer Physics, New Instruments and Methods II
CPP 15.3: Vortrag
Montag, 9. März 2026, 17:45–18:00, ZEU/0255
PIERS-Based Mechanistic Insights into PVC Micro- and Nanoplastics Degradation on Ag Nanoflake-TiO2 Platform — •Olugbenga Ayeni1, Josiah Ngenev Shondo2, Tim Tjardts3, Sinan Şen4, Franz Faupel3, Salih Veziroglu3, Oral Cenk Aktas3,4, and Tayebeh Ameri1 — 1Chair for Composite Materials, Department of Materials Science, Kiel University, Germany. — 2Department of Energy Conversion and Storage, Technical University of Denmark, Denmark. — 3Chair for Multicomponent Materials, Department of Materials Science, Kiel University, Germany. — 4Department of Orthodontics, University Hospital of Schleswig-Holstein (UKSH), Kiel, Germany.
Conventional characterization techniques such as FTIR and SERS have been applied to Polyvinyl chloride (PVC) micro- and nanoplastics (MNPs) degradation, but they lack the combined real-time sensitivity and photocatalytic functionality needed to probe early-stage PVC-MNPs degradation. In this work, we report the use of Photo-induced enhanced Raman spectroscopy (PIERS) technique under continuous UV illumination to monitor the degradation of PVC-MNPs in real time on a highly active photocatalytic platform based on Ag nanoflakes (Ag NFs) grown on TiO2 thin films. Our PIERS-based approach reveals the chemical transformations and structural disorder occurring in the PVC-MNPs backbone within 10 min of UV irradiation. Our results establish PIERS as a promising mechanistic probe for tracking real-time PVC degradation pathways at the nanoscale. This study advances the mechanistic understanding of plastic degradation at the nanoscale.
Keywords: Ag-TiO2; Micro- and nanoplastics; Polyvinyl chloride; Photocatalytic degradation; Photo-induced enhanced Raman spectroscopy