INVESTIGADORES
CERE silvia
artículos
Título:
Development and thermal evolution of silver clusters in hybrid organicinorganic solgel coatings
Autor/es:
RAÚL A. PROCACCINI; SILVIA CERÉ; SERGIO PELLICE
Revista:
SURFACE AND COATINGS TECHNOLOGY
Editorial:
ELSEVIER SCIENCE SA
Referencias:
Lugar: Amsterdam; Año: 2011 vol. 205 p. 5464 - 5469
ISSN:
0257-8972
Resumen:
A silver doped hybrid organicinorganic solgel coating was developed through the hydrolytic condensation of
tetraethoxysilane (TEOS) and methyl-triethoxysilane (MTES). Silica nanoparticles were added in order to give a
mechanical reinforcement and silver nitrate as the supplier of Ag+ ions,which have a potential effect as a biocide
component. Synthesis of precursor sol and the evolution of silver clusters in the whole process were analyzed
through Attenuated Total Reflectance Fourier Transformed Infrared spectroscopy (ATR-FTIR) and UVvisible
spectroscopy. A high thermal sensitivity of sub-nanometric silver particleswas determined by Small Angle X-ray
Scattering (SAXS) carrying to formation of higher agglomerates or silver nanoparticles. Lixiviation tests show
long-term and gradual silver releasing without worsening of the structural integrity of coatings