Unveiling point defects in titania mesocrystals: a combined EPR and XPS study

Abstract

Titania mesocrystals, prepared using a polyethylene template, were studied by a combination of electron microscopy, XPS and EPR techniques. The electronic structure and local environment of point defects in the TiO2 mesocrystals were deduced from experimental and simulated EPR data. The Ti3+/F centers and oxygen defects were shown to be the most photosensitive. The presence of carbon radicals was also demonstrated. Since the point defects govern TiO2 photosensitivity and photocatalytic activity in the visible spectral range, the data obtained provide new insights into photocatalytic reactions engineering using titania mesocrystals

Publication DOI: https://doi.org/10.1039/C8NJ03196G
Divisions: College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Chemical Engineering & Applied Chemistry
College of Engineering & Physical Sciences > Aston Institute of Materials Research (AIMR)
College of Engineering & Physical Sciences
Additional Information: © The Royal Society of Chemistry 2018
Full Text Link:
Related URLs: http://pubs.rsc ... 6G#!divAbstract (Publisher URL)
PURE Output Type: Article
Published Date: 2018-08-02
Published Online Date: 2018-08-02
Accepted Date: 2018-07-23
Authors: Konstantinova, Elizaveta
Minnekhanov, Anton
Beltiukov, Artemii
Ivanov, Vladimir
Sutherland, Andrew James (ORCID Profile 0000-0003-3651-1809)
Boytsova, Olga

Download

[img]

Version: Accepted Version

| Preview

Export / Share Citation


Statistics

Additional statistics for this record