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Abstract: The authors present a method of preparation of TiO2 nanotubes by alkaline treatment (with NaOH) of TiO2 particles followed by acid-washing and annealing treatment. Theoretical and experimental studies on the thermal conductivity of TiO2 nanotubes is also presented. The thermal conductivity values determined experimentally matched well with theoretical values obtained. It was found that TiO2 nanotubes had a lower thermal conductivity than the original TiO2 particles. This phenomenon was attributed to an increased phonon-boundary scattering and enhanced phonon confinement in the nanotubes.

Reference: Journal of Physical Chemistry C, 117, 3 (2013) 1401-1408

DOI: 10.1021/jp3108655