Self-organization of nickel nanoparticles dispersed in acetone: from separate nanoparticles to three-dimensional superstructures

• Autores: Hernández-Pérez, I., Díaz Barriga-Arceo, L., Garibay Febles, V., Suárez-Parra, R., Luna Paz, R., Santiago, Patricia, Rendón, Luis, Acosta Jara, José, Espinoza Tapia, J. C., Gonzalez-Reyes, L.
• Formato: artículo
• Fecha de Publicación: 2016
• Institución: Universidad ESAN
• Repositorio: ESAN-Institucional
• Lenguaje: inglés
• OAI Identifier: oai:repositorio.esan.edu.pe:20.500.12640/2495
• Enlace del recurso: https://hdl.handle.net/20.500.12640/2495; https://doi.org/10.1016/j.jscs.2016.09.001
• Nivel de acceso: acceso abierto
• Materia: Self-organization; Nickel nanoparticles; Three-dimensional super-structures; Sonochemistry; Autoorganización; Nanopartículas de níquel; Superestructuras tridimensionales; Sonoquímica; https://purl.org/pe-repo/ocde/ford#1.04.00

Sonochemical synthesis of monodisperse nickel nanoparticles (Ni-NPs) by reduction of Ni acetylacetonate in the presence of polyvinylpyrrolidone stabilizer is reported. The Ni-NPs size is readily controlled to 5 nanometer diameter with a standard deviation of less than 5%. The as-prepared Ni-NPs sample was dispersed in acetone, for 4 weeks. For structural analysis was not applied to a magnetic field or heat treatment as key methods to direct the assembly. The transition from separate Ni-NPs into self-organization of three dimensions (3D) superstructures was studied by electron microscopy. Experimental analysis suggests that the translation and rotation movement of the Ni-NPs are governed by magnetic frustration which promotes the formation of different geometric arrangements in two dimensions (2D). The formation of 3D superstructures is confirmed from scanning electron microscopy revealing a layered domain that consists of staking of several monolayers having multiple well-defined supercrystalline domains, enabling their use for optical, electronic and sensor applications.