描述了基于NaN_3-C_6Cl_6混合物热解一步合成洋葱状碳纳米粒子的方法.应用EMS, XRD, Ramans研究了缓冲气体(Ar或空气)对炭产物的得率、形貌和结构的影响.产物包含洋葱炭、非晶碳和NaCl,通过简单的纯化处理即可完全除去副产物.洋葱状炭纳米粒子的形成由热解过程中压力迅速增加产生的震动波诱导苯基活性分子合并所制.“,”A one-step process for the synthesis of onion-like carbon nanoparticles is described.The process is based on a thermolysis of a NaN_3-C_6Cl_6 mixture.The effect of buffer gas (Ar or air) on the yield,morphology,and structure of the carbon products was investigated by electron microscopy,X-ray diffraction,and Raman spectroscopy.The products contained carbon-onions,amorphous carbon nanoparticles,and NaCl.The byproducts were completely removed using a simple purification process.The formation of onion-like nanoparticles is likely caused by a shock wave,a rapid increase of pressure,during thermolysis,which induced the coalescence of phenyl radicals.