Fabrication of hollow metal nanoparticles by ultrasonically generated microbubbles
Fabrication of hollow metal nanoparticles by ultrasonically generated microbubbles
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DOI：
10.1016/j.matlet.2017.11.109
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发表时间：
2018-03
影响因子：
3
通讯作者：
Ryosuke Yokose;T. Makuta
中科院分区：
文献类型：
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作者：
Ryosuke Yokose;T. Makuta
空心金属纳米颗粒是由低熔点合金制成的，在制造过程中防止了熔融金属的氧化。熔融金属液滴在其上方的水中通过分解熔融金属中的气泡而产生，导致金属纳米颗粒的制造，伴随着水相的冷却。理论上，金属纳米颗粒的中空结构是由于氧化过程中的Kirkendall效应而产生的。采用超声产生气微泡的方法，通过将供气由氧化改为非氧化，选择性地产生固体/空心颗粒。
Hollow metal nanoparticles were produced from a low-melting point alloy, by preventing oxidation of molten metal during fabrication. Molten metal droplets were generated in the water above it by disintegrating bubbles in the molten metal, resulting in the fabrication of metal nanoparticles, accompanied by cooling of the water phase. The hollow structure of the metal nanoparticles was theorized to have occurred due to the Kirkendall effect during oxidation. With the method of applying ultrasonically generated gas-microbubbles, solid/hollow particles were selectively generated by changing the gas supply from oxidizing to non-oxidizing.