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We propose an up-scalable, reliable, contamination-free, rod-like TiO 2 material grown by a new method based on sputtering deposition concepts which offers a multi-scale porosity, namely: an intra-rods nano-porosity (1–5 nm) arising from the Thornton's conditions and an extra-rods meso-porosity (10–50 nm) originating from the spatial separation of the Titanium and Oxygen sources combined with a grazing Ti flux. The procedure is simple, since it does not require any template layer to trigger the nano-structuring, and versatile, since porosity and layer thickness can be easily tuned; it is empowered by the lack of contaminations/solvents and by the structural stability of the material (at least) up to 500 C. Our material gains porosity, stability and infiltration capability superior if compared to conventionally sputtered TiO 2 layers. Its competition level with chemically synthesized …
Nature Publishing Group
Publication date: 
21 Dec 2016

Salvatore Sanzaro, Emanuele Smecca, Giovanni Mannino, Corrado Bongiorno, Giovanna Pellegrino, Fortunato Neri, Graziella Malandrino, Maria Rita Catalano, Guglielmo Guido Condorelli, Rosabianca Iacobellis, Luisa De Marco, Corrado Spinella, Antonino La Magna, Alessandra Alberti

Biblio References: 
Volume: 6 Pages: 39509
Scientific reports