In situ Raman spectroelectrochemistry as a useful tool for detection of TiO2(anatase) impurities in TiO2(B) and TiO2(rutile)

0458495 - ÚFCH JH 2017 RIV AT eng J - Journal Article
Pitňa Lásková, Barbora - Kavan, Ladislav - Zukalová, Markéta - Mocek, Karel - Frank, Otakar
In situ Raman spectroelectrochemistry as a useful tool for detection of TiO2(anatase) impurities in TiO2(B) and TiO2(rutile).
Monatshefte fur Chemie. Roč. 147, č. 5 (2016), s. 951-959. ISSN 0026-9247. E-ISSN 1434-4475
R&D Projects: GA ČR GA15-06511S
Institutional support: RVO:61388955
Keywords : Raman spectroscopy * Electrochemistry * Nanochemistry
Subject RIV: CG - Electrochemistry
Impact factor: 1.282, year: 2016

The TiO2(B) and TiO2(rutile) polymorphs are often contaminated by anatase phase residues from synthesis. The detection of anatase in TiO2 material can be difficult in case of small anatase impurities. In situ Raman spectroelectrochemistry is presented here as the most reliable method for unequivocal determination of anatase phase in TiO2 powder. Anatase detection is based on an occurrence of Raman vibrational bands of orthorhombic lithium titanate, a product of Li insertion in anatase, in Raman spectra of TiO2(B) and TiO2(rutile) materials during electrochemical Li+ insertion/extraction. Graphical abstract
Permanent Link: http://hdl.handle.net/11104/0258767