In this study, spark discharges are generated in liquid heptane that is in contact with an immiscible solution of silver nitrate. The results demonstrate that the discharges produced at 22 kV voltage amplitude and 500 ns pulse width change the color of both liquids and lead to the formation of nanoparticles. Most particles collected from heptane are nanocomposites of Ag nanoparticles (<10 nm) in the hydrocarbon network. Meanwhile, the material collected from the silver nitrate solution is Ag nanoparticles (10–150 nm of diameter). At shorter pulse width (100 ns), the discharges generate similar materials in both liquids; however, the size distribution of these materials is smaller. Finally, a scenario of particle synthesis is proposed and discussed.

中文翻译：

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与硝酸银溶液接触的液态庚烷中的火花放电：合成颗粒的研究

在这项研究中，在与不混溶的硝酸银溶液接触的液态庚烷中产生火花放电。结果表明，在 22 kV 电压幅度和 500 ns 脉冲宽度下产生的放电会改变两种液体的颜色并导致纳米颗粒的形成。从庚烷收集的大多数颗粒是碳氢化合物网络中的 Ag 纳米颗粒 (<10 nm) 的纳米复合材料。同时，从硝酸银溶液中收集的材料是银纳米颗粒（直径为 10-150 nm）。在较短的脉冲宽度 (100 ns) 下，放电在两种液体中产生相似的物质；然而，这些材料的尺寸分布更小。最后，提出并讨论了粒子合成的场景。