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磁性纳米氧化铝球的合成及性能研究
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Abstract:
本文以α-α-Fe2O3核，硬脂酸为模板剂，通过异丙醇铝水解，缩聚过程以及模板剂自组装合成了一种新型均一核壳结构氧化铁/氧化铝纳米球，然后通过H2/N2还原得到磁性氧化铝球。该纳米球具有均一壳层，厚度为30 nm，比表面积为140 m2/g，孔容为0.22 cm3/g，比饱和磁化强度为50.2 emu/g。
Well-structured nanospheres with a magnetic core/alumina shell (MFeCA) structure were obtained by self-assembly of stearic acid/alumina species complex in 1-propanol system. The thickness of alumina uniform shell is around 30 nm. The surface area, pore volume and average pore size of the sample are 140 m2/g, 0.22 cm3/g and 5.2 nm, respectively. The saturation magnetization values of the sample are as high as 50.2 emu/g.
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