| Literature DB >> 17568605 |
Hironori Iida1, Kosuke Takayanagi, Takuya Nakanishi, Tetsuya Osaka.
Abstract
Nanoparticles of Fe(3)O(4) were synthesized by hydrolysis in an aqueous solution containing ferrous and ferric salts at various ratios with 1,6-hexanediamine as a base. It was found that the ferrous to ferric ratio influences the reaction mechanism for the formation of Fe(3)O(4). When the ratio of ferrous to ferric ions was increased, the formation of large hydroxide particles as a precursor of Fe(3)O(4) was promoted, which resulted in an increase in the size of Fe(3)O(4) nanoparticles. As a result, the mean diameter of Fe(3)O(4) nanoparticles increased from approximately 9 to approximately 37 nm as the molar percentage of ferrous ions with respect to the total iron ions was increased from 33 to 100%. Furthermore, it was demonstrated that magnetic properties of Fe(3)O(4) nanoparticles can be controlled by adjusting the molar ratio of ferrous to ferric ions as well as the particle diameter.Entities:
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Year: 2007 PMID： 17568605 DOI： 10.1016/j.jcis.2007.05.047
Source DB: PubMed Journal: J Colloid Interface Sci ISSN： 0021-9797 Impact factor: 8.128