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首页> 外文期刊>Nanotechnology >Purification of carbon nanotubes through an electric field near the arranged microelectrodes
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Purification of carbon nanotubes through an electric field near the arranged microelectrodes

机译：通过布置的微电极附近的电场纯化碳纳米管

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摘要

In this work, we attempt to purify multi-walled carbon nanotubes (MWNTs) using electrophoresis induced by the application of an AC electric field to a set of microelectrodes in a microliquid channel. This purifying method is different from conventional methods based on chemical processes. It was observed that most of the MWNTs could pass along the microliquid channel without attaching to the electrode under specific conditions of 1 kHz, at 0.2 V_(rms) mu m~(-1). On the other hand, the majority of the carbon impurities attached to the electrodes under identical conditions. Field emission scanning electron microscopy (FESEM) images and Raman spectra confirm that this condition is beneficial for removing carbon impurities. The proposed approach has potential applicability in the development of microdevices that can simultaneously perform the purification and fabrication of MWNTs.
机译：在这项工作中，我们尝试使用电泳法纯化多壁碳纳米管（MWNT），该电泳法是通过在微液体通道中向一组微电极施加AC电场而诱导的。该纯化方法与基于化学过程的常规方法不同。观察到，在0.2 V_（rms）μm〜（-1）的特定条件下（1 kHz），大多数MWNTs可以通过微液体通道通过而不附着在电极上。另一方面，大多数碳杂质在相同条件下附着在电极上。场发射扫描电子显微镜（FESEM）图像和拉曼光谱证实，这种条件对于去除碳杂质是有益的。所提出的方法在微器件的开发中具有潜在的适用性，该微器件可以同时执行MWNT的纯化和制造。

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