Callaghan Innovation Research Papers

Back to Research Papers

TitleXPS and NEXAFS study of fluorine modified TiO2 nano-ovoids reveals dependence of Ti3+ surface population on the modifying agent
Publication TypeJournal Article
Year of Publication2014
AuthorsRuzicka, J.-Y., Bakar F.A., Thomsen L., Cowie B.C., McNicoll C., Kemmitt T., Brand H.E.A., Ingham B., Andersson G.G., and Golovko V.B.
JournalRSC Advances
Pagination20649 - 20658
Date Published2014
ISSN20462069 (ISSN)
KeywordsCrystalline titanium dioxide, fluorine, Fluorine doping, Modifying agents, Particle phase, Resulting materials, Surface area, Surface modifying agent, Synthesised, titanium dioxide, X ray photoelectron spectroscopy
AbstractCrystalline titanium dioxide was synthesised under mild conditions by the thermal degradation of peroxotitanic acid in the presence of a number of fluoride-containing surface modifying agents (NH4F, NH 4BF4, NH4PF6, NBu4F, NBu4BF4, NBu4PF6). The resulting materials were characterised by PXRD, SEM, HRTEM, XPS and NEXAFS. Particle phase, size, and surface area were noticeably affected by the choice of surface modifying agent. Both the cation and anion comprising the modifying agent affect the surface Ti3+ population of the materials, with two apparent trends observed: F- > BF4 - > PF 6 - and NBu4 + > NH 4 +. All materials displayed evidence of fluorine doping on their surfaces, although no evidence of bulk doping was observed. This journal is © the Partner Organisations 2014.

Back to top