β Scribed by Kiminobu Imasaka; Yuki Kato; Junya Suehiro
No coin nor oath required. For personal study only.
In this study, influences of gas bubbling on water-solubility of single-walled carbon nanotubes (SWCNTs) based on microplasma treatment in water were investigated. Oxygen (O 2 ), argon (Ar), nitrogen (N 2 ) and carbon dioxide (CO 2 ) were used as the bubbling gases. Bubbling of O 2 , Ar and N 2 enhanced the Oβ and Hβ radicals produced by the microplasma in water and the solubility of SWCNT was increased more than two times compared to that without gas bubbling. On the other hand, the solubility was very poor in case of CO 2 . The negative effect of CO 2 on the solubility might be due to the decrease of radicals, which were scavenged by carbonate ion generated by dissociation of CO 2 in water, and caused by the reaction of radicals with CO 2 or CO rather than those with SWCNT.
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