Magnesium and Molybdenum Oxide for Bundled Multi-walled Carbon Nanotubes Synthesis
镁钼氧化物催化剂制备多壁纳米碳管的初步研究

Magnesium and molybdenum oxide prepared by a sol-gel method was used to synthesize high quality multi-walled carbon nanotubes bundles by catalytic decomposition CH4. The . experiment reveals that the prepared catalysts have high activity and high efficiency. After reacting for 2h, the quantity of synthesized MWNTs is over 30 times of the pristine catalysts. Transmission electron microscopy, high-resolution transmission electron microscopy, thermal gravimetric analysis and laser Raman spectroscopy were used to characterize the synthesized MWNTs bundles. The results show that the synthesized MWNTs bundles have a diameter distribution about 10-22nm. The longer the reaction time, the graphitization degree of the synthesized MWNTs bundles. After reacting for 1h, the MWNTs bundles with a high purity of more than 95% can be obtained. The forming multilayers Mo particles on the surface of MgO support are the main cause of the nanotubes bundles growth.