2006
DOI: 10.1088/0957-4484/17/14/013
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Preparation of water-soluble carbon nanotubes using a pulsed streamer discharge in water

Abstract: A novel technique for the preparation of water-soluble carbon nanotubes was demonstrated using a pulsed streamer discharge generated in water. The technique involved chemical reactions between radicals generated by the pulsed streamer discharge and carbon nanotubes. The pulsed streamer-treated carbon nanotubes were homogeneously dispersed and well solubilized in water for a month or longer. The mechanism of solubilization of carbon nanotubes by the pulsed streamer discharge is discussed based on FTIR spectrosc… Show more

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Cited by 55 publications
(64 citation statements)
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“…In order to make CNTs well dispersed in water, pristine CNTs should be chemically functionalized so that their solubility can be greatly improved. In this study, microplasma-based solubilization technique, which has been proposed and developed by the present authors (Imasaka et al 2006 was employed to prepare water soluble CNTs. This solubilization method enables to mix and disperse cells and CNTs together in water without The formation of micro/nano interfaces causing fatal damages to biological cells, which may be induced using surfactants such as SDS.…”
Section: Basic Proceduresmentioning
confidence: 99%
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“…In order to make CNTs well dispersed in water, pristine CNTs should be chemically functionalized so that their solubility can be greatly improved. In this study, microplasma-based solubilization technique, which has been proposed and developed by the present authors (Imasaka et al 2006 was employed to prepare water soluble CNTs. This solubilization method enables to mix and disperse cells and CNTs together in water without The formation of micro/nano interfaces causing fatal damages to biological cells, which may be induced using surfactants such as SDS.…”
Section: Basic Proceduresmentioning
confidence: 99%
“…The MWCNTs had a diameter of 60-100 nm, a length of 5-15 lm and 95 % purity. The MWCNTs were solubilized in water by the microplasma treatment technique, which was developed by the present authors (Imasaka et al 2006. In brief, radical species, such as H * or O * , are produced by the microplasma in water and functionalize the CNT surface with hydrophilic group including -OH or -COOH.…”
Section: Carbon Nanotubementioning
confidence: 99%
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“…In order to deal with these problems, various physical and chemical modifications [13] on CNTs have been carried out for the purpose of improving their solubility in water, which will in turn partially resolve toxicity issue. For example, hydroxyl group [14], carboxyl group [15], polyethylene glycol [1622], amino group [23], poly(allylamine) [24], DNA or RNA [25, 26], and many others [13, 27] have been used to functionalize CNTs. Meanwhile, the studies on the toxicities, bioeffects, and environment health risks about CNTs have also made great progresses in the past few years; the studies themselves have moved from in vitro model and statistical assay to in vivo animal studies and mechanisms investigations [11, 2831].…”
Section: Introductionmentioning
confidence: 99%
“…Since carbon nanotubes are chemically inert, many different wet and dry methods based on different oxidizing agents have been developed, but most of them are time consuming, expensive and require accurate control of temperature, atmosphere and reaction time. The other problem with these techniques is the lack of control on formation of the wide variety of oxygenated functional groups such as hydroxyl, epoxy, carbonyl and carboxylic acid moieties on CNTs [3][4][5][6][7][8].…”
mentioning
confidence: 99%