A facile preparation of nanocrystalline Mo2C from graphite or carbon nanotubes

作者：Yang ZH; Cai PJ; Shi L; Gu YL; Chen LY; Qian YT^*

来源：Journal of Solid State Chemistry, 2006, 179(1): 29-32.

DOI：10.1016/j.jssc.2005.09.037

• molybdenum carbide
• nanoparticle
• chemical synthesis
• transmission electron microscopy
• surface area

Nanocrystalline Mo2C powders were successfully synthesized at 500 degrees C by reacting molybdenum chloride (MoCl5) with C (graphite or carbon nanotube) in metallic sodium medium. X-ray powder diffractometer (XRD), transmission electron microscope (TEM), X-ray photoelectron spectroscope (XPS) and surface area analyzer (BET method) were used to characterize the samples. Experiments reveal that the carbon source used for the carbide synthesis has a great effect on the particle size and the surface area of the samples. When micro-sized graphite was used as C source the obtained nanocrystalline Mo2C powder consists of particles of 30-100nm, with a surface area of 2.311 m(2)/g. When carbon nanotubes were used as C source, the as-synthesized Mo2C sample is composed of particles of 20 similar to 50 nm, with a surface area of 23.458 m(2)/g, which is an order of magnitude larger than that of the carbide prepared from the graphite.

• 出版日期2006-1
• 单位中国科学技术大学; 合肥工业大学