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超声条件下,在乙醇分散的3-氨丙基三乙氧基硅烷(APTES)功能化的磁性Fe3O4纳米粒子和氯铂酸的混合溶液中,滴加水合肼成功地制备了磁性Fe3O4/Pt复合纳米粒子。采用紫外吸收可见光谱(UV-Vis),电子能谱仪(EDS),透射电子显微镜(TEM),光电子能谱(XPS),超导量子干涉仪(SQUID)等方法对复合粒子的形态、结构、组成以及磁学性质进行了表征。结果表明:在此条件下制得的复合粒子粒度在50nm左右,室温下磁化强度可达17.2(A·m2)/kg。
Under the condition of ultrasonic, Fe3O4 / Pt magnetic composite was successfully prepared by adding hydrazine hydrate dropwise to a mixed solution of 3-aminopropyltriethoxysilane (APTES) functionalized magnetic Fe3O4 nanoparticles and chloroplatinic acid dispersed in ethanol. Nanoparticles. The morphology and structure of the composite particles were characterized by UV-Vis, EDS, TEM, XPS and SQUID. , Composition and magnetic properties were characterized. The results show that the particle size of composite particles prepared at this condition is about 50 nm and the magnetization can reach 17.2 (A · m2) / kg at room temperature.