The continuous synthesis of carbonrencapsulated magnetic nanoparticles is described using an inductively coupled radio frequency thermal plasma torch. The synthesis uses the simultaneous vaporization of iron powder and a liquid carbon source in the plasma jet. It was found that the process parameters could be adjusted to minimize the amorphous carbon content in the product. It could be achieved using either aliphatic alcohols (processed in Ar plasma) or hydrocarbons (processed in Ar-O2 plasma). In such circumstances the oxygen etches any amorphous carbon particles produced. Complete reduction of amorphous carbon was achieved when ethanol was used as a carbon feedstock.
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机译:使用电感耦合射频热等离子体割炬描述了碳封磁性纳米粒子的连续合成。该合成利用等离子体射流中铁粉和液态碳源的同时汽化。结果发现,可以调整工艺参数,以尽量减少产品中的无定形碳含量。它可以使用脂肪醇(在 Ar 等离子体中处理)或碳氢化合物(在 Ar-O2 等离子体中处理)来实现。在这种情况下,氧气会蚀刻产生的任何无定形碳颗粒。当使用乙醇作为碳原料时,实现了无定形碳的完全还原。
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