Synthesis and Properties of Magnetic Nanoparticles  

作　　者：Sixin LI Jiancheng ZHANG Yue SHEN Bo NI Jingang ZHANG 

机构地区：[1]College of Materials Science and Engineering, Shanghai University, Shanghai 200072,China

出　　处：《Journal of Materials Science & Technology》2006年第5期659-663,共5页材料科学技术（英文版）

基　　金：The work was supported by the National Natural Science Foundation of China （Grant No. 90206017 ）;the High Tech. Program of Ministry of Science and Technology of China （Grant No. 2003BA301A21）.

摘　　要：The uniform mesoporous SBA-15 consisting of SiO2 with long-range channels Offers an excellent host material to synthesize or assemble the magnetic nanocomposites, such as Fe, Ni. In this paper, highly dispersed and uniform iron nanoparticles were incorporated into the pore channels of SBA-15 through a newly developed strategy in which some kinds of coupling agents were used to entrap the nanoparticles into the silica framework. The X-ray diffraction （XRD）, fourier transmission infrared spectroscopy （FTIR）, high-resolution transmission electronic microscopy （HRTEM） and energy dispersive X-ray spectroscopy （EDX） were performed to further identify the successful incorporation and grafting of iron. Compared with other ordinary non-assembled magnetic nanoparticles, the assembled Fe nanoparticles with the diameter even in the size range of 5～6 nm still have better magnetic properties.The uniform mesoporous SBA-15 consisting of SiO2 with long-range channels Offers an excellent host material to synthesize or assemble the magnetic nanocomposites, such as Fe, Ni. In this paper, highly dispersed and uniform iron nanoparticles were incorporated into the pore channels of SBA-15 through a newly developed strategy in which some kinds of coupling agents were used to entrap the nanoparticles into the silica framework. The X-ray diffraction （XRD）, fourier transmission infrared spectroscopy （FTIR）, high-resolution transmission electronic microscopy （HRTEM） and energy dispersive X-ray spectroscopy （EDX） were performed to further identify the successful incorporation and grafting of iron. Compared with other ordinary non-assembled magnetic nanoparticles, the assembled Fe nanoparticles with the diameter even in the size range of 5～6 nm still have better magnetic properties.

关 键 词：Mesoporous materials NANOPARTICLE Magnetic properties 

分 类 号：TB383[一般工业技术—材料科学与工程]