Well-dispersed, ultrasmall, superparamagnetic magnesium ferrite nanocrystallites with controlled hydrophilicity/hydrophobicity and high saturation magnetization

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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
发表期刊	Rsc Advances
ISSN	2046-2069
卷号	3 期号:33 页码:13961-13967
摘要	A 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.
部门归属	[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
关键词	Iron-oxide Nanoparticles Thermal Coagulation Therapy Nanostructured Materials Mgfe2o4 Hyperthermia Functionalization Coprecipitation Biomedicine Fabrication Particles
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71498
专题	中国科学院金属研究所
推荐引用方式 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.