Synthesis and magnetic properties of CoFe2O4 nanoparticles conﬁned within mesoporous silica

CORC > 兰州化学物理研究所 > 中国科学院兰州化学物理研究所 > 固体润滑国家重点实验室

	Synthesis and magnetic properties of CoFe2O4 nanoparticles conﬁned within mesoporous silica
	Xue QJ(薛群基); Chen JT(陈江涛); Yan XB(阎兴斌)
刊名	Microporous and Mesoporous Materials
	2010
卷号	135 页码:137-142
关键词	CoFe2O4 nanoparticles Mesoporous silica Heat-treatment Magnetic property
ISSN号	1387-1811
通讯作者	阎兴斌
中文摘要	We report here the synthesis and magnetic properties of cobalt ferrite (CoFe2O4) nanoparticles inside thenanoscale channels of highly ordered mesoporous silica SBA-15. Formation of CoFe2O4 nanoparticlesinside the mesoporous channels was realized by impregnation of cobalt salt and iron salt precursors intothe channels of the SBA-15, followed by calcination at different temperatures (400–1000 C) in air. Theproducts were characterized by X-ray diffraction (XRD), ﬁeld emission scanning and transmission elec-tron microscopies (FESEM and TEM), and nitrogen adsorption–desorption isotherm measurements. Asper results, a typical characteristic of the obtained materials is that the mesoporous channels of SBA-15 are partially ﬁlled by CoFe2O4 nanocrystallites. In consequence, these materials exhibit open, ordered2D hexagonal frameworks, which are very similar to that of the pristine SBA-15 except for the reduceddimension and speciﬁc surface area. Magnetic properties of the obtained materials show strong depen-dence on the calcination temperature. The maximum-value combination of the saturation magnetization(Ms), the remnant magnetization (Mr) and the coercivity (Hc) is obtained from the sample prepared at1000 C. Moreover, compared with the pure CoFe2O4 powder prepared at the same temperature, theCoFe2O4 incorporated SBA-15 composite possess higher magnetic parameters (Ms, Mr and Hc).
学科主题	材料科学与物理化学
收录类别	SCI
资助信息	the Top Hundred Talents Program of Chinese Academy of Sciences
语种	英语
公开日期	2012-09-28
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/1045]
专题	兰州化学物理研究所_固体润滑国家重点实验室
通讯作者	Yan XB(阎兴斌)
推荐引用方式 GB/T 7714	Xue QJ,Chen JT,Yan XB. Synthesis and magnetic properties of CoFe2O4 nanoparticles conﬁned within mesoporous silica[J]. Microporous and Mesoporous Materials,2010,135:137-142.
APA	薛群基,陈江涛,&阎兴斌.(2010).Synthesis and magnetic properties of CoFe2O4 nanoparticles conﬁned within mesoporous silica.Microporous and Mesoporous Materials,135,137-142.
MLA	薛群基,et al."Synthesis and magnetic properties of CoFe2O4 nanoparticles conﬁned within mesoporous silica".Microporous and Mesoporous Materials 135(2010):137-142.