Heat-resistant TiO2 nanocomposites with anatase phase as carriers for highly efficient CO oxidation catalysts

•Thermally stable anatase TiO2 nanocomposites doped with ceria or ittria may be used as support for highly active Pt-contained catalyst for CO oxidation.•All dopants increase the temperature of anatase to rutile phase transition and stabilize TiO2 anatase structure up to 900°C.•Dopants are localized in near atomic state in the regions of interblock boundaries formed by anatase particle intergrowth.