Journal
JOURNAL OF NANOPARTICLE RESEARCH
Volume 14, Issue 4, Pages -Publisher
SPRINGER
DOI: 10.1007/s11051-012-0755-2
Keywords
Fe3O4 magnetic nanoparticles; Water-soluble; One-pot reaction; Phenol; Thermal decomposition method; Colloids
Categories
Funding
- National Natural Science Foundation of China [81072308, 30840067]
- Shanghai Biomedicine Key Program [10391901700, 08391911100]
- Shanghai Basic Research Key Program [09JC1411500]
- Shanghai Municipal Education Commission [09YZ170]
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An improved thermal decomposition method was used to directly prepare water-soluble Fe3O4 magnetic nanoparticles (MNPs) with relatively higher quality via reductive decomposition of ferric acetylacetonate [Fe(acac)(3)], in the presence of benzyl ether and phenol, in which inexpensive phenol acted as reducing agent and stabilizer, produce the semi phenol-benzoquinone coated on the Fe3O4 and make the Fe3O4 center dot MNPs water-soluble and the colloidal solution stable. By changing the molar ratio of phenol to Fe(acac)(3) and reaction time, the size of Fe3O4 center dot MNPs could be varied from 19.3 +/- 4.4 nm to 9.7 +/- 1.5 nm, with the saturation magnetizations in the range of 51.3-62.9 emu/g.
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