Author/Authors :
Kontos، نويسنده , , A.G. and Katsanaki، نويسنده , , A. and Maggos، نويسنده , , T. and Likodimos، نويسنده , , V. and Ghicov، نويسنده , , A. and Kim، نويسنده , , D. and Kunze، نويسنده , , Michael J. and Vasilakos، نويسنده , , C. and Schmuki، نويسنده , , P. and Falaras، نويسنده , , P.، نويسنده ,
Abstract :
Self-assembled titanium oxide nanotubular (NTs) arrays with vertical arrangement, tailored morphological properties and variable thickness were prepared by electrochemical anodization in ethylene glycol containing electrolytes. The NTs present significant UV photocatalysis against toluene and benzene at ppb concentrations, under normal conditions of temperature and pressure. The photocatalytic activity depends on the length of the NT arrays, showing a tendency of saturation for thickness above 2.5 μm and maximum efficiency for samples with thickness of 12 μm. The optimum NT structures outperform over standard Degussa P25 films rendering them very promising for outdoor photocatalytic applications.
