溶剂热法制备的Fe_(3)O_(4)@C纳米球结构与性能  

The structure and properties of Fe_(3)O_(4) coated carbon nanospheres synthesized by solvothermal method

作　　者：常鲲鹏 赵振杰[1] 余美东 CHANG Kun-peng;ZHAO Zhen-jie;YU Mei-dong(Engineering Research Center of Nanoelectronics and Advanced Equipment of the Ministry of Education,School of Physics and Electronic Science,East China Normal University,Shanghai 200062,China)

机构地区：[1]华东师范大学物理与电子科学学院纳光电与先进装备教育部工程研究中心,上海200062

出　　处：《磁性材料及器件》2021年第5期7-11,共5页Journal of Magnetic Materials and Devices

摘　　要：以溶剂热法制备出的Fe_(3)O_(4)纳米球为铁源、葡萄糖为碳源,通过溶剂热法制备出单分散性良好的Fe_(3)O_(4)@C纳米球。研究了反应物配比对Fe_(3)O_(4)纳米球尺寸和形貌的影响,以及包碳厚度对Fe_(3)O_(4)@C磁响应特性的影响。同时,对比分析了潮湿环境下Fe_(3)O_(4)和Fe_(3)O_(4)@C的化学稳定性。结果表明,Fe_(3)O_(4)饱和磁化强度可达73.5 emu/g,碳层最厚时Fe_(3)O_(4)@C最低饱和磁化强度能达到38.3 emu/g,并且潮湿环境下Fe_(3)O_(4)@C呈现出更好的稳定性。最后,红外光谱测试表明Fe_(3)O_(4)@C纳米球表面含有许多水溶性的官能团,表明其在生物检测方面有潜在应用。Fe_(3)O_(4)@C nanospheres with good morphology were prepared using Fe_(3)O_(4)nanospheres by solvothermal method as the iron source and glucose as carbon source.The effect of reactants ratios on the size and morphology of the Fe_(3)O_(4)nanospheres as well as influence of the carbon coating thickness on the magnetic response characteristics of Fe_(3)O_(4)@C was systematically studied.At the same time,the chemical stability of Fe_(3)O_(4)and Fe_(3)O_(4)@C nanospheres under humid environment was compared and analyzed.The results shows that when the carbon layer was the thickest,the lowest saturation magnetization of Fe_(3)O_(4)@C nanospheres can reach 38.3 emu/g,and the Fe_(3)O_(4)nanospheres after coating the carbon layer show better stability in humid environments.Finally,the infrared spectrum test of Fe_(3)O_(4)@C nanospheres shows that the surface of Fe_(3)O_(4)@C nanospheres contains many water-soluble functional groups,which indicates that the synthesized Fe_(3)O_(4)@C composite particles have many potential applications in biological detection.

关 键 词：溶剂热法 Fe_(3)O_(4)纳米球 Fe_(3)O_(4)@C纳米球 磁性能 稳定性 

分 类 号：TM273[一般工业技术—材料科学与工程] TB383[电气工程—电工理论与新技术]