Anatase phase formation kinetics in Ti and TiOx nanoparticles produced by gas-phase condensation

► Partially crystalline Ti and amorphous TiOx NPs were prepared using IGC. ► Their crystallization behavior was analyzed using non-isothermal kinetics. ► Ti showed fast crystallization kinetics to anatase phase with trace of rutile. ► The phase formation mechanism was discussed in detail using the kinetics data. ► The anatase NPs showed high photocatalytic behavior.