The aim of this project is to investigate the behaviour of several special types plasters\nspecifically designed to degrade the most common pollutants which are present in the atmosphere.\nIn particular, specific additives have been added to these plasters, in order to obtain a broad spectrum\nof active and synergic response, each of which have peculiar functions: - microporous materials,\nsuch as clinoptilolite, a natural zeolite, that promotes the adsorption of air pollutants thanks to\nits porous nature; - nano-fillers, such as carbon nanotubes, that behave both as reinforcing agents\nas well as adsorbent materials; - photochemical agents, such as titanium oxide, that degrade air\npollutants, previously adsorbed on carbon nanotubes and zeolites, thanks to the action of light that\nactivates photodegradation reactions. All the samples were also characterized in terms of mechanical\nproperties, adhesion to supports and water absorption. Furthermore, photodegradation tests were\ncarried out by exposing plaster surfaces, wetted with a Rodamine solution, to Ultraviolet rays (UV)\nfor different times. Plasters photodegradative capacity was evaluated and the results highlighted the\nfact that the designed admixtures showed an important photodegradative action, strictly dependent\non the types and specific ratios of the selected additives.
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