【作者】 章桥新； 杨丽宁； 张佳明； 官建国； 王一龙；

【Author】 ZHANG Qiaoxin~(1,2) YANG Lining~2 ZHANG Jiaming~2 GUAN Jianguo~2 WANG Yilong~2 (1.School of Mechanical and Electronic Engineering,Wuhan University of Technology; 2.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,China)

【机构】 武汉理工大学机电工程学院； 武汉理工大学材料复合新技术国家重点实验室；

【摘要】 以硅烷偶联剂巯基丙基三甲氧基硅烷作为添加剂,甲醛作为还原剂,在 AgE[（NH₃）₂]⁺溶液中制备出具有核壳结构的 Fe₃O₄/Ag 纳米复合粒子。用 X 射线衍射、场发射扫描电镜、差热分析、振动样品磁强计和 Hall 效应测试系统对样品进行了表征。结果表明：Fe₃O₄/Ag 核壳复合粒子粒径为40～ 60nm,Ag 壳层厚度为10～15nm,体积电阻率为7．7573×10^-4Ω·cm,饱和磁化强度为26．37A·m²/Kg。更多还原

【Abstract】 Fe₃O₄/Ag core-shell nanoparticles were prepared by the reduction of Ag[（NH₃）₂]⁺ with formaldehyde as reductant,and mer- capto-propyl-trimethoxy-silane as an additive.The nanocomposite particles were characterized by X-ray diffraction,field-emission- scanning electron microscopy,differential thermal analysis,vibrating sample magnetometry and HL-5 hall effect testing.The results show that the size distributions of the core-shell Fe₃O₄/Ag nanocomposites averaged 40—60 nm,with a thickness of 10—15nm of Ag layer.The volume resistivity of the nanocomposites is 7.757 3×10^-4 Ω·cm and the saturation magnetization is 26.37 A.m²/kg.更多还原