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Formation of raspberry like cobalt particles with hydrazine reduction in a polyol route

This work describes the effect of hydrazine hydrate on the formation of the raspberry-like morphology of the cobalt nanomaterials in a polyol route. In the synthesis, the molar ratio of N2H4 to Co2+was varied from 2.5 to 10. At the beginning with low molar ratio, spherical microspheres were formed....

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Bibliographic Details
Main Authors: Khe, Cheng Seong, Aziz, Azizan, Lockman, Zainovia, Rajalingam, Sokkalingam, Merican, Zulkifli, Vasant, Pandian
Format: Conference Proceeding
Language:English
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Summary:This work describes the effect of hydrazine hydrate on the formation of the raspberry-like morphology of the cobalt nanomaterials in a polyol route. In the synthesis, the molar ratio of N2H4 to Co2+was varied from 2.5 to 10. At the beginning with low molar ratio, spherical microspheres were formed. When the molar ratio was increased to 5 and above, final morphology of the cobalt nanomaterials became raspberry-like. This might be attributed to the absorption of the hydrazine complex of cobalt nanoparticles at certain facets during their growth stage and later self-assembled into the raspberry shaped microparticles. The plausible formation mechanism were proposed.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4968103