Self-cleaning and antifouling nanocomposites for stone protection: Properties and performances of stone-nanomaterial systems

Roveri, M and Gherardi, Francesca and Goidanich, S and Gulotta, D and Castelvetro, V and Fischer, R and Winandy, L and Weber, J and Toniolo, L (2018) Self-cleaning and antifouling nanocomposites for stone protection: Properties and performances of stone-nanomaterial systems. IOP Conf. Series: Materials Science and Engineering . ISSN -

Full content URL: http://iopscience.iop.org/article/10.1088/1757-899...

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Self-cleaning and antifouling nanocomposites for stone protection: Properties and performances of stone-nanomaterial systems
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Abstract

The development of nanocomposites combining photocatalytic, antifouling and protective features has provided interesting and promising results in the last years. However, few data about the behaviour of the nanomaterials applied on stone surfaces are available in the literature. In the framework of the EU-Horizon 2020 project "Nano-Cathedral", nanostructured protective treatments have been designed with different nanoparticles (TiO2, Ag, ZnO), solvents and silane/siloxane-based polymeric matrices. The innovative formulations have been applied on 6 lithotypes, selected among the stones used in five medieval cathedrals (Vitoria-Gasteiz, Ghent, Cologne, Vienna and Pisa) and a contemporary theatre (Oslo Opera House), which are emblematic of different European geological and environmental areas. The treated stone specimens have been fully characterized to evaluate the surface optical and morphological compatibility, the reduction of water absorption by capillarity, the change in wettability and water vapour permeability properties. The selected treatments fulfil all these requirements and exhibit good photocatalytic and antifouling properties once applied on stone specimens. Different accelerated ageing procedures have also been performed in order to evaluate the stability of the polymeric matrices in the presence of photoactive TiO2. © Published under licence by IOP Publishing Ltd.

Additional Information:Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Keywords:nanocomposites, stone, self-cleaning, antifouling
Subjects:F Physical Sciences > F200 Materials Science
Divisions:College of Science > School of Chemistry
ID Code:33289
Deposited On:22 Oct 2018 13:14

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