Synthesis and formation mechanism of hollow carbon spheres containing Fe3N nanocrystals
Hollow carbon spheres containing Fe3N nanocrystals (Fe3N/HCSs) are synthesized by ferrocene and ammonium chloride in high pressure argon at 500 ℃. The structure, morphology and properties of the products are characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetric analysis (TG) and vibrating sample magnetometry (VSM). The hollow carbon spheres have diameters of 1-10 μm and shell thickness of hundreds of nanometers. The dimensions of the acicular Fe3N nanocrystals have diameters of ca. 100 nm and lengths of 600-800 nm. The weight percent of Fe3N nanocrystals in Fe3N/HCSs is about 37.8％. The saturation magnetization value of the hollow carbon spheres containing Fe3N nanocrystals is 10.61 emu/g.
Hollow carbon spheres Fe3N Synthesis
Boyang Liu Dechang Jia Lihua Dong Yansheng Yin
Institute of Marine Materials Science and Engineering, Shanghai Maritime University, Shanghai 201306 Institute for Advanced Ceramics, Harbin Institute of Technology, Harbin 150001, China
国际会议
青岛
英文
1281-1284
2009-10-09（万方平台首次上网日期，不代表论文的发表时间）