Preparation of magnetic graphitic carbon nitride nanocomposites
Preparation of magnetic graphitic carbon nitride nanocomposites
复制标题
磁性石墨氮化碳纳米复合材料的制备
DOI:
10.1016/j.matlet.2010.08.064
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发表时间:
2010-12
影响因子:
3
通讯作者:
周春晖
中科院分区:
文献类型:
--
作者:
周春晖
Magnetic graphitic carbon nitride nanocomposites (MGCN) were prepared by thermal treatment of a mixture of cyanamide and silica-coated Fe2O3species nanoparticles. The thermal polycondensation of cyanamide in the mixture led to the encapsulation of silica-coated magnetic Fe species by graphitic carbon nitride, thereby forming MGCN nanocomposites. The samples were characterized by Fourier transform infrared spectroscopy, powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy and vibration sample magnetometer. The average particle size of MGCN nanocomposites was ca. 300nm. The nanocomposites exhibited paramagnetic properties with a total magnetization value of 23.15emug−1. The experimental results showed that such a process can directly in situ reduce α-Fe2O3to yield magnetic cores in the absence of hydrogen. The possible mechanisms of the formation of MGCN nanocomposites and in situ reduction of α-Fe2O3by NH3from thermal polycondensation of cyanamide were proposed.
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