A rosette cooling cell: more effective container for solubilization of single-walled carbon nanotubes under probe-type ultrasonic irradiation.
A rosette cooling cell: more effective container for solubilization of single-walled carbon nanotubes under probe-type ultrasonic irradiation.
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DOI：
10.1016/j.ultsonch.2012.06.009
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发表时间：
2013
影响因子：
8.4
通讯作者：
Tatsuki Yasumitsu;Gang Liu;J. Lévêque;S. Aonuma;L. Duclaux;Takahide Kimura;N. Komatsu
中科院分区：
文献类型：
--
作者：
Tatsuki Yasumitsu;Gang Liu;J. Lévêque;S. Aonuma;L. Duclaux;Takahide Kimura;N. Komatsu
探针型超声已被用于表面活性剂辅助增溶，或个性化，单壁碳纳米管（SWNTs）。所得到的溶液不仅可以用于光谱分析，如吸收、光致发光和圆二色性，还可以用于密度梯度超离心、介质电泳、色谱和聚合物包裹的分离。尽管其重要性，声化学处理的单壁碳纳米管尚未得到重视。在这里，我们报告了一个更有效的冷却电池探头型超声。与传统的圆柱形电池相比，经超离心处理的玫瑰花形冷却电池中溶解的单壁碳纳米管的浓度几乎增加了一倍。莲座电池的效率可归因于更高的循环效率和SWNT分散的冷却效率以及空化过程的增强。
Probe-type ultrasonication has been employed for surfactant-aided solubilization, or individualization, of single-walled carbon nanotubes (SWNTs). The resulting solution can be used not only for spectroscopic analyses such as absorption, photoluminescence, and circular dichroism, but also for separation by density gradient ultracentrifugation, dielectrophoresis, chromatography, and polymer wrapping. In spite of its importance, the sonochemical processing of SWNTs has not been considered seriously. Herein, we report on a more efficient cooling cell for probe-type ultrasonication. As compared with a conventional cylindrical cell, the concentration of the SWNTs solubilized in water was found to be almost double in a rosette cooling cell after ultracentrifugation. The efficiency of a rosette cell can be attributed to the higher efficiency in circulation and cooling of the SWNT dispersion as well as enhancement of the cavitation process.