Raman spectra of titanium dioxide (anatase, rutile) with identified oxygen isotopes (16, 17, 18)

作者：Otakar Frank, Markéta Zukalová, Barbora Pitňa Lásková, Jenő Kürti, János Koltai, Ladislav Kavan · 发表于：Physical Chemistry Chemical Physics · 年份：2012 · DOI：10.1039/c2cp42763j · 被引用次数：583 · 研究领域：TiO2 Photocatalysis and Solar Cells、Advanced Photocatalysis Techniques、Pigment Synthesis and Properties

Six representative isotope-labeled samples of titanium dioxide were synthesized: Ti(16)O(2), Ti(17)O(2) and Ti(18)O(2), each in anatase and rutile forms. Their Raman scattering was analyzed at temperatures down to 5 K. Spectral assignment was supported by numerical simulation using DFT calculations. The combination of experimental and theoretical Raman frequencies with the corresponding isotopic shifts allowed us to address various still-open questions about the second-order Raman scattering in rutile, and the analysis of overlapping features in the anatase spectrum.