Synthesis and analytical characterisation of copper-based nanocoatings for bioactive stone artworks treatment.
Biological agents play an important role in the deterioration of cultural heritage causing aesthetic, biogeophysical and biogeochemical damages. Conservation is based on the use of preventive and remedial methods. The former aims at inhibiting biological attack, and the latter aims at eradicating the biological agents responsible for biodeterioration. Here, we propose the preparation and the analytical characterisation of copper-based nanocoating, capable of acting both as a remedy and to prevent microbial proliferation. Core-shell CuNPs are mixed with a silicon-based product, commonly used as a water-repellent/consolidant, to obtain a combined bioactive system to be applied on stone substrates. The resulting coatings exert a marked biological activity over a long period of time due to the continuous and controlled release of copper ions acting as biocides. To the best of our knowledge, this is the first time that a multifunctional material is proposed, combining the antimicrobial properties of nanostructured coatings with those of the formulations applied to the restoration of stone artworks. A complete characterisation based on a multi-technique analytical approach is presented.
Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, via Orabona 4, 70125 Bari, Italy. ditaranto@chimica.uniba.it
Nicoletta
N
Ditaranto
Sabrina
S
Loperfido
Inez
I
van der Werf
Annarosa
A
Mangone
Nicola
N
Cioffi
Luigia
L
Sabbatini
D000890:Anti-Infective Agents / Q000138:chemical synthesis / Q000737:chemistry*; D002626:Chemistry, Pharmaceutical; D003300:Copper / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry*; D012613:Sculpture; D013499:Surface Properties
D000890:Anti-Infective Agents; D003300:Copper