Synthesis of ultrasmall magnetic iron oxide nanoparticles and study of their colloid and surface chemistry.
Synthesis of ultrasmall magnetic iron oxide nanoparticles and study of their colloid and surface chemistry.
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DOI:
10.1016/j.jmmm.2009.02.041
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发表时间:
2009-05-01
影响因子:
2.7
通讯作者:
Kolesnichenko, Vladimir
中科院分区:
文献类型:
--
作者:
Goloverda, Galina;Jackson, Barry;Kidd, Clayton;Kolesnichenko, Vladimir
关键词:
Colloidal nanoparticles of Fe3O4 (4 nm) were synthesized by high-temperature hydrolysis of chelated iron (II) and (III) diethylene glycol alkoxide complexes in a solution of the parent alcohol (H2DEG) without using capping ligands or surfactants: [Fe(DEG)Cl2]2- + 2[Fe(DEG)Cl3]2- + 2H2O + 2OH- → Fe3O4 + 3H2DEG + 8Cl- The obtained particles were reacted with different small-molecule polydentate ligands, and the resulting adducts were tested for aqueous colloid formation. Both the carboxyl and α-hydroxyl groups of the hydroxyacids are involved in coordination to the nanoparticles’ surface. This coordination provides the major contribution to the stability of the ligand-coated nanoparticles against hydrolysis.
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