کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1648442 | 1007557 | 2010 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Preparation of magnetic graphitic carbon nitride nanocomposites Preparation of magnetic graphitic carbon nitride nanocomposites](/preview/png/1648442.png)
Magnetic graphitic carbon nitride nanocomposites (MGCN) were prepared by thermal treatment of a mixture of cyanamide and silica-coated Fe2O3 species 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. 300 nm. The nanocomposites exhibited paramagnetic properties with a total magnetization value of 23.15 emu g− 1. The experimental results showed that such a process can directly in situ reduce α-Fe2O3 to yield magnetic cores in the absence of hydrogen. The possible mechanisms of the formation of MGCN nanocomposites and in situ reduction of α-Fe2O3 by NH3 from thermal polycondensation of cyanamide were proposed.
Journal: Materials Letters - Volume 64, Issue 23, 15 December 2010, Pages 2620–2623