Dispersion of carbon nanotubes in water and non-aqueous solvents

Kharissova, Oxana V.; Kharisov, Boris I.; Ortíz, Edgar

doi:10.1039/c3ra43852j

Cited by 235 publications

(149 citation statements)

References 212 publications

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“…As well as the observed lack of toxicity, the effective trafficking of these nanobottles throughout cells (dependent on targeting) has highlighted striking flexibility. In particular, we have observed an effective ‘debundling' mechanism that also explains why, although CNT aggregation is fast on a microscopic, physicochemical level59, CNTs prove to be effective in their entry into cells, as shown here. These suggest that cellular systems can traffic such CNTs in a wholly effective and dynamic way60, separating them from each other in a manner similar to intracellular lipid disassembly61.…”

Section: Discussionsupporting

confidence: 64%

Carbon nanotubes allow capture of krypton, barium and lead for multichannel biological X-ray fluorescence imaging

et al. 2016

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The desire to study biology in situ has been aided by many imaging techniques. Among these, X-ray fluorescence (XRF) mapping permits observation of elemental distributions in a multichannel manner. However, XRF imaging is underused, in part, because of the difficulty in interpreting maps without an underlying cellular ‘blueprint'; this could be supplied using contrast agents. Carbon nanotubes (CNTs) can be filled with a wide range of inorganic materials, and thus can be used as ‘contrast agents' if biologically absent elements are encapsulated. Here we show that sealed single-walled CNTs filled with lead, barium and even krypton can be produced, and externally decorated with peptides to provide affinity for sub-cellular targets. The agents are able to highlight specific organelles in multiplexed XRF mapping, and are, in principle, a general and versatile tool for this, and other modes of biological imaging.

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Section: Discussionsupporting

confidence: 64%

Carbon nanotubes allow capture of krypton, barium and lead for multichannel biological X-ray fluorescence imaging

et al. 2016

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“…Among these electro-conductive fillers, CNTs are one of the most promising candidates due to their unique nanostructure and excellent physical properties (BenValid et al 2010;Qi et al 2013). However, the inherent insolubility of CNTs in water media severely hinders their large scale use in related application fields (Kharissova et al 2013;Richard et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Production of highly electro-conductive cellulosic paper via surface coating of carbon nanotube/graphene oxide nanocomposites using nanocrystalline cellulose as a binder

Tang

Mosseler

et al. 2014

Cellulose

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Electro-conductive cellulosic paper has attracted great attention as a promising alternative material in the emerging field of flexible and portable electronic devices. However, the environmentally friendly fabrication of electro-conductive cellulosic paper still remains challenging. Herein, green multiwalled carbon nanotube (MWCNT)/graphene oxide (GO) nanocomposites towards the sustainable development strategy were developed and subsequently used to impart electro-conductivity to cellulosic paper via surface coating process. GO exfoliated from graphite powder was used as a dispersant to improve the dispersion of MWCNTs in water media, and nanocrystalline cellulose (NCC) derived from cotton fibers was employed as a binder for the MWCNT/GO nanocomposites. Effect of NCC amount on the rheological behavior, particle size distribution, sedimentation stability and zeta potential of MWCNT/GO nanocomposites as well as the electro-conductivity and mechanical properties of coated paper was investigated. Results demonstrated that NCC enhanced the dispersion of MWCNT/GO nanocomposites in addition to serving as a binder. Surface coating application of MWCNT/GO nanocomposites was found to impart high electro-conductivity of up to 892 S m -1 to the cellulosic paper while improving its mechanical properties.

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“…It is well known that CNTs are difficult to disperse in conventional liquids due to the formation of CNT aggregates (bundles), caused by a strong Van der Waals force and their long, winding shape. Though a great deal of work has been done and several detailed reviews are available on this topic, the search for an effective dispersion strategy is still on. Dispersion of CNTs in a liquid can be prepared by the following three main routes: i) covalently functionalizing CNTs and dispersing them in the solvents, ii) applying noncovalent treatments with some dispersing agents like surfactants and additives and mixing with the solvents, and iii) directly solubilizing pristine CNTs in neat solvents.…”

Section: Transparent Conductive Electrodes (Tces)mentioning

confidence: 99%

Carbon Nanotubes for Dye-Sensitized Solar Cells

Batmunkh

Biggs

Shapter

2015

Small

135

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As one type of emerging photovoltaic cell, dye-sensitized solar cells (DSSCs) are an attractive potential source of renewable energy due to their eco-friendliness, ease of fabrication, and cost effectiveness. However, in DSSCs, the rarity and high cost of some electrode materials (transparent conducting oxide and platinum) and the inefficient performance caused by slow electron transport, poor light-harvesting efficiency, and significant charge recombination are critical issues. Recent research has shown that carbon nanotubes (CNTs) are promising candidates to overcome these issues due to their unique electrical, optical, chemical, physical, as well as catalytic properties. This article provides a comprehensive review of the research that has focused on the application of CNTs and their hybrids in transparent conducting electrodes (TCEs), in semiconducting layers, and in counter electrodes of DSSCs. At the end of this review, some important research directions for the future use of CNTs in DSSCs are also provided.

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Dispersion of carbon nanotubes in water and non-aqueous solvents

Cited by 235 publications

References 212 publications

Carbon nanotubes allow capture of krypton, barium and lead for multichannel biological X-ray fluorescence imaging

Carbon nanotubes allow capture of krypton, barium and lead for multichannel biological X-ray fluorescence imaging

Production of highly electro-conductive cellulosic paper via surface coating of carbon nanotube/graphene oxide nanocomposites using nanocrystalline cellulose as a binder

Carbon Nanotubes for Dye-Sensitized Solar Cells

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