carbon nanostructures;
thermolysis;
magnetic nanoparticles;
X-ray;
diffraction;
Raman spectroscopy;
D O I:
10.1080/15363830802171503
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 [物理化学];
081704 [应用化学];
摘要:
A new method for producing carbon-encapsulated magnetic nanoparticles using a thermolysis route is developed. The method is based on dechlorination of C6Cl6 with NaN3 in the presence of Fe or Fe14Nd2B magnetic alloy. The as-obtained products contained carbon-encapsulated magnetic nanoparticles with the diameters between 20 and 60nm. The products were purified and their composition and morphology were studied by means of SEM, TEM, XRD and TG-DTA. The carbon-encapsulated nanoparticles are superparamagnetic with the maximum saturation magnetization of 20 emu/g. This autothermal process has inherent advantages, including the use of low cost materials and the simplicity of the production protocol.