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Vol. 3 No. 1 (2011)

Synthesis and Thermal Behavior of Metallic Cobalt Micro and Nanostructures

https://doi.org/10.1007/BF03353646
Marlene González Montie
Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada. Legaria 694, Col Irrigación, Miguel Hidalgo, CP 11500, Ciudad de México D.F., México
P. Santiago-Jacinto
Instituto de Física, Circuito de la Investigación Científica Ciudad Universitaria, CP 04510, México, D.F., México
J. A. I. Díaz Góngora
Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada. Legaria 694, Col Irrigación, Miguel Hidalgo, CP 11500, Ciudad de México D.F., México
E. Reguera
Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada. Legaria 694, Col Irrigación, Miguel Hidalgo, CP 11500, Ciudad de México D.F., México
Geonel Rodríguez-Gattorno
Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada. Legaria 694, Col Irrigación, Miguel Hidalgo, CP 11500, Ciudad de México D.F., México

Corresponding Author: Geonel Rodríguez-Gattorno

geonelr@mda.cinvestav.mx

Nano-Micro Letters, Vol. 3 No. 1 (2011), Article Number: 12-19

Abstract

In this contribution, a comparative study of metallic cobalt micro and nanoparticles obtained in solution by four different chemical routes is reported. Classic routes such as borohydride reduction in aqueous media and the so-called polyol methodology were used to obtain the cobalt nanostructures to be studied. Using CTAB as surfactant, cobalt hollow nanostructures were obtained. The use of strong reducing agents, like sodium borohydride, favors the formation of quasi-monodispersed nanoparticles of about 2 nm size but accompanied with impurities; for hydrazine (a mild reducer), nanoparticles of larger size are obtained which organize in spherical microagglomerates. Valuable information on the particles thermal stability and on nature of the species anchored at their surface was obtained from thermogravimetric curves. The samples to be studied were characterized from UV-vis, IR, X-ray diffraction, and electron microscopy images (scanning and transmission).

Keywords

Metallic Cobalt Cobalt nanoparticles Magnetic nanoparticles Hollow magnetic microparticles
Montie, Marlene González, P. Santiago-Jacinto, J. A. I. Díaz Góngora, E. Reguera, and Geonel Rodríguez-Gattorno. 2011. “Synthesis and Thermal Behavior of Metallic Cobalt Micro and Nanostructures”. Nano-Micro Letters 3 (1):12-19. https://doi.org/10.1007/BF03353646.
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