Formation and deposition of stable silver nanoparticles encapsulated in solid spheres
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We prepared solid spheres, with diameters between 100 and 400 nm, encapsulating silver nanocrystallites (about 20 +/- 10 nm in diameter), by heating colloidal solutions of silver in methoxyethanol at 120 degrees C. Stable coatings were obtained using spin coating and rapid thermal processing on optical glass substrates. UV-Vis spectroscopy measurements demonstrated the remarkable stability against aggregation and particle growth, even after prolonged heating at 120 degrees C and exposed at direct sunlight, of the solutions, even using high concentrations of silver (1 M), and coatings of spheres encapsulating silver.
CitationSue, S. [et al.]. Formation and deposition of stable silver nanoparticles encapsulated in solid spheres. "Journal of nanoscience and nanotechnology", 01 Agost 2014, vol. 14, núm. 8, p. 6394-6398.