Shin Myoung-Sun, Lee Kyu-Hang, Kim Jung-Gil, Choi Sun-Yong, Cho Guang-Sup, Kim Seong-In
J Nanosci Nanotechnol. 2015 Nov;15(11):9045-51. doi: 10.1166/jnn.2015.11585.
Nano-metal with nano-thin exfoliated (NTE) graphite hybrid material has been synthesized by radio frequency (RF) thermal plasma. A micro-sized nickel powder and the NTE graphite powder were fed into the RF plasma and nano sized nickel particles attached to the surface of the NTE graphite were found. In the high temperature of RF thermal plasma that is of higher than 10,000 K, the NTE graphite was not vaporized or damaged, while the metal powder was vaporized. The size of nickel nanoparticles on the NTE graphite was 40 80 nme. The size and number density of produced metal nanoparticle can be controlled by the process pressure in a reactor, the feeding ratio of raw materials, and the flow rate of working gas. X-ray diffraction results of the produced hybrid nano material indicate that there was a bonding between the nano metal and the NTE graphite. The inert nature of surface of the NTE graphite has been a barrier for the NTE graphite to be used a compounding additive. The nano metal covered NTE graphite will open up many potential applications of NTE graphite and polymer compound materials.
通过射频（RF）热等离子体合成了纳米金属与纳米薄片剥落（NTE）石墨的混合材料。将微米级镍粉和NTE石墨粉送入RF等离子体中，发现有纳米级镍颗粒附着在NTE石墨表面。在高于10000K的RF热等离子体高温下，NTE石墨未汽化或受损，而金属粉被汽化。NTE石墨上镍纳米颗粒的尺寸为40 - 80纳米。所产生的金属纳米颗粒的尺寸和数密度可通过反应器中的工艺压力、原料的进料比以及工作气体的流速来控制。所制备的混合纳米材料的X射线衍射结果表明纳米金属与NTE石墨之间存在键合。NTE石墨表面的惰性一直是其作为复合添加剂应用的障碍。纳米金属包覆的NTE石墨将为NTE石墨和聚合物复合材料开辟许多潜在应用。
