RT journal article
T1 CuO/SiO2 nanocomposites: A multifunctional coating for application on building stone
A1 Zarzuela Sánchez, Rafael
A1 Carbú Espinosa de los Monteros, María
A1 Gil Montero, María Luisa Almoraima
A1 Cantoral Fernández, Jesús Manuel
A1 Mosquera Díaz, María Jesús
A2 BiomedicinaBiotecnología y Salud Pública
A2 Química Física
AB The decay of building materials is generally caused by the combination of chemical, physical and biological agents. Therefore, the development of products that combine multiple protection mechanisms is desirable. We have developed, via a sol-gel route, CuO/SiO2 nanocomposites with application as a multifunctional protective treatment for building stones. In this work, we demonstrate that CuONPs act as a catalyst of the sol-gel process and promote the formation of nucleation centers, affecting the final structure of the nanocomposites. We also conclude that the nanocomposites increase mechanical resistance and decrease microbial growth of two reference laboratory microorganisms (bacteria and yeast) on a typical building limestone.  Moreover, the release of Cu2+ ions is the most likely mechanism for the biocidal effect. Finally, we find that a 0.15% concentration of CuONPs is the optimal value for both consolidant and biocidal action. A higher proportion of CuONPs causes a precipitation of NPs, decreasing the biocidal effect and the resulting material is heterogeneous and fragile.
SN 1873-4197
YR 2017
FD 2017
LK http://hdl.handle.net/10498/38778
UL http://hdl.handle.net/10498/38778
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 07-nov-2026