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Well-dispersed, ultrasmall, superparamagnetic magnesium ferrite nanocrystallites with controlled hydrophilicity/hydrophobicity and high saturation magnetization
W. S. Tang; Y. Su; Q. Li; S. A. Gao; J. K. Shang
2013
Source PublicationRsc Advances
ISSN2046-2069
Volume3Issue:33Pages:13961-13967
AbstractA facile approach was developed to create well-dispersed, ultrasmall superparamagnetic magnesium ferrite nanocrystallites with controlled hydrophilicity/hydrophobicity and high saturation magnetization by a room temperature precipitation reaction followed by a solvent thermal process at low temperature. The in situ NaCl "cage'' which self-formed during the room temperature precipitation reaction confined the formation, crystallization, and growth of the magnesium ferrite nanocrystallites, resulting in an ultrasmall average particle size of similar to 3.7 nm, while a high saturation magnetization comparable with that of the bulk MgFe2O4 material was achieved with a low Mg2+ content of similar to 10%. The surfaces of these superparamagnetic magnesium ferrite nanocrystallites could be modified with oleic acid/citric acid ester coatings to have controlled hydrophobicity/hydrophilicity to ensure their good dispersion in either nonaqueous or aqueous environments. This approach could be readily applied to other ferrite material systems and promises a wide range of technical applications.
description.department[tang, wenshu ; su, yu ; li, qi ; gao, shian ; shang, jian ku] chinese acad sci, shenyang natl lab mat sci, inst met res, environm funct mat div, shenyang 110016, peoples r china. [shang, jian ku] univ illinois, dept mat sci & engn, urbana, il 61801 usa. ; li, q (reprint author), chinese acad sci, shenyang natl lab mat sci, inst met res, environm funct mat div, shenyang 110016, peoples r china. ; qili@imr.ac.cn
KeywordIron-oxide Nanoparticles Thermal Coagulation Therapy Nanostructured Materials Mgfe2o4 Hyperthermia Functionalization Coprecipitation Biomedicine Fabrication Particles
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71498
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
W. S. Tang,Y. Su,Q. Li,et al. Well-dispersed, ultrasmall, superparamagnetic magnesium ferrite nanocrystallites with controlled hydrophilicity/hydrophobicity and high saturation magnetization[J]. Rsc Advances,2013,3(33):13961-13967.
APA W. S. Tang,Y. Su,Q. Li,S. A. Gao,&J. K. Shang.(2013).Well-dispersed, ultrasmall, superparamagnetic magnesium ferrite nanocrystallites with controlled hydrophilicity/hydrophobicity and high saturation magnetization.Rsc Advances,3(33),13961-13967.
MLA W. S. Tang,et al."Well-dispersed, ultrasmall, superparamagnetic magnesium ferrite nanocrystallites with controlled hydrophilicity/hydrophobicity and high saturation magnetization".Rsc Advances 3.33(2013):13961-13967.
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