引用本文:
Nong Yue He, Ya Fei Guo, Yan Deng, Zhi Fei Wang, Song Li, Hong Na Liu. Carbon encapsulated magnetic nanoparticles produced by hydrothermal reaction[J]. Chinese Chemical Letters,
2007, 18(4): 487-490.
doi:
10.1016/j.cclet.2007.01.042
Citation: Nong Yue He, Ya Fei Guo, Yan Deng, Zhi Fei Wang, Song Li, Hong Na Liu. Carbon encapsulated magnetic nanoparticles produced by hydrothermal reaction[J]. Chinese Chemical Letters, 2007, 18(4): 487-490. doi: 10.1016/j.cclet.2007.01.042
Citation: Nong Yue He, Ya Fei Guo, Yan Deng, Zhi Fei Wang, Song Li, Hong Na Liu. Carbon encapsulated magnetic nanoparticles produced by hydrothermal reaction[J]. Chinese Chemical Letters, 2007, 18(4): 487-490. doi: 10.1016/j.cclet.2007.01.042
Carbon encapsulated magnetic nanoparticles produced by hydrothermal reaction
摘要:
Carbon encapsulated magnetic nanoparticles (CEMNs) were synthesized by heating an aqueous glucose solution containing Fe-Au (Au coated Fe nanoparticles) nanoparticles at 160-180℃ for 2 h. This novel hydrothermal approach is not only simple but also provides the surface of CEMNs with functional groups like -OH. The formation of carbon encapsulated magnetic nanoparticles was not favored when using pure Fe nanoparticles as cores because of the oxidation of Fe nanoparticles by H2O during the reaction and,therefore, the surfaces of the naked Fe nanoparticles had to be coated by Au shell in advance. TEM, XRD, XPS and VSM measurments characterized that they were uniform carbon spheres containing some embedded Fe-Au nanoparticles, with a saturation of 14.6 emu/g and the size of the typical product is~350 nm.
English
Carbon encapsulated magnetic nanoparticles produced by hydrothermal reaction
Abstract:
Carbon encapsulated magnetic nanoparticles (CEMNs) were synthesized by heating an aqueous glucose solution containing Fe-Au (Au coated Fe nanoparticles) nanoparticles at 160-180℃ for 2 h. This novel hydrothermal approach is not only simple but also provides the surface of CEMNs with functional groups like -OH. The formation of carbon encapsulated magnetic nanoparticles was not favored when using pure Fe nanoparticles as cores because of the oxidation of Fe nanoparticles by H2O during the reaction and,therefore, the surfaces of the naked Fe nanoparticles had to be coated by Au shell in advance. TEM, XRD, XPS and VSM measurments characterized that they were uniform carbon spheres containing some embedded Fe-Au nanoparticles, with a saturation of 14.6 emu/g and the size of the typical product is~350 nm.
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