A metal-assisted microwave treatment that converting raw coal powders into nano-graphite is presented. Specifically, four major factors are identified for successful conversion: (1) high temperature; (2) reducing environment; (3) catalyst; and (4) microwave radiation. Specifically, it is determined that the combination of the carbon sources (raw coal powders), the high temperature (microwave induced electric sparking), the reducing environment (the Ar/H₂ mixture), the catalyst (Cu foil), with the microwave radiations can generate nano-graphites. This novel approach utilizes the sparking induced by the microwave radiation on the fork-shape metal foils to generate high temperature (> 1000 ºC) within few seconds. The small thermal load makes this method cost effective and has potential for higher temperature using metals with higher melting temperature. Refinement of this technique is possible to yield a higher quality and quantity of nano-graphite materials for a wider range of applications.

提出了一种金属辅助微波处理，将原煤粉转化为纳米石墨。具体而言，确定了成功转换的四个主要因素：（1）高温；（2）减少环境；（3）催化剂；（4）微波辐射。具体而言，确定碳源（原煤粉），高温（微波感应电火花），还原环境（Ar / H _{2）的组合。}混合物），催化剂（铜箔），随着微波辐射能生成纳米石墨。这种新颖的方法利用了叉形金属箔上微波辐射引起的火花，可在几秒钟内产生高温（> 1000ºC）。较小的热负荷使该方法具有成本效益，并且具有使用具有较高熔化温度的金属而具有较高温度的潜力。对该技术的改进有可能产生更高质量和数量的纳米石墨材料，以用于更广泛的应用。