Photoactive semiconductor nanocrystals for surface protection of architectural stone.

Petronella F., Pagliarulo A., Truppi A., Striccoli M., Lettieri M., Colangiuli D., Calia A., Curri M.L., Comparelli R.

VI - Fisica applicata, acceleratori e beni culturali
Aula 29C-2 - Mercoledì 19 h 09:00 - 13:00
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Semiconductor nanocrystals are very interesting materials with original size-dependent chemical-physical properties that may be profitably applied for protection of cultural heritage. Here we present the realization of colloidal $TiO_{2}$ nanocrystals based coating, with controlled morphology, to convey new functional properties to the surfaces of monuments and buildings of cultural interest. We present the chemical-physical characterization of rod-like $TiO_{2}$ nanocrystals based coating applied onto calcarenite, a porous stone, extensively used in South Italian monuments. The coating has resulted in a functional surface protective layer with self-cleaning characteristics, as demonstrated by its photocatalytic activity, enabling a new generation of smart coatings.

Società Italiana di Fisica - Via Saragozza 12 40123 Bologna P.IVA 00308310374 | credits