Single-walled CNTs carbon nanotubes

Table 7.2 Summary of in vitro toxicity outcomes after exposure to CNTs. The term CNTs indicates that the material was not identified as single- (SWNTs) or multi-walled (MWNTs) carbon nanotubes. Percentage of catalytically active transition metals in the CNTs is reported when indicated by the authors. 

SWNTs single-walled nanotubes DWNTs double-waUed nanotubes MWNTs multi-walled nanotubes CNTs carbon nanotubes not purified... 

The 0-d nanoparticles can be nano-metal oxides (such as silica,1 titania,2 alumina3), nano-metal carbide,4 and polyhedral oligomeric silsesquioxanes (POSS),5 to name just a few the 1-d nanofibers can be carbon nanofiber,6 and carbon nanotubes (CNT),7 which could be single-wall CNTs (SWCNT) or multiwall CNTs (MWCNT) etc. the 2-d nano-layers include, but are not limited to, layered silicates,8 layered double hydroxides (LDH),9 layered zirconium phosphate,10 and layered titanates,11 etc. 3-d nano-networks are rarely used and thus examples are not provided here. 

Ceo = Fullerene SWNTs = Single-walled carbon nanotubes MWNTs = Multiwalled carbon nanotubes DWNTs = Double-walled carbon nanotubes CNTs = carbon nanotubes TEM = Transmission electron microscopy HRTEM = High-resolution transmission electron microscopy SEM = Scanning electron microscopy AFM = Atomic force microscopy Ch = Chiral vector CVD = Chemical vapor deposition HiPco process = High-pressure disproportionation of CO RBM = Radical breathing vibration modes DOS = Electronic density of states. 

Nanocyl S.A company has developed high performing catalytic systems for the production of premium quality multi-walled (MW-CNT), double-walled (DW-CNT) and single-walled (SW-CNT) carbon nanotubes. The Co-Fe/yAlaOa is the catalyst developed by Nanocyl S.A. for the MWNT-CNT production. Its activity properties strongly depend on the catalyst formulation, the preparation method used and the reaction operating conditions. 

PNMA, poly(N-methylaniline) PANI, poly(aniline) PEDOT, poly(3,4-ethylenedioxythiphene PSS, poly(styrene-sulfonate), PPy, poly(pyrrole) PEO, poly(ethylene oxide) DBSA, dodecylbenzene sulfonic acid CSA, camphor sulfonic acid PTSA, poly(o-toluene sulfonic acid) PFOA, perfluoro-octanolc acid TSA, toluene sulfonic acid CNF, carbon nanofiber SWCNT, single-walled carbon nanotube NP, nanoparticle MWCNT, multiwalled carbon nanotube PTh, poly(thlphene) CNT, carbon nanotube POA, poly(o-anisidine) SPANI, poly(anilinesulfonlcacld) PB, Prussian Blue DAB, 1,2-diamino benzene POEA, poly(o-ethoxyanlllne) PMMA, poly(methyl methacrylate). 

Water inside a carbon nanotube (CNT) shows another set of unusual features which have been the subjects ofgreat interest in recent years and are currently being studied extensively by experiments and simulations. A remarkable aspect unearthed is the ability of a CNT to act as water transporter and filter. The properties of water inside a CNT depend on the diameter d of the CNT, which is analogous to the parameter Wq of reverse micelles discussed in the preceding chapter. However, water within a single-wall CNT shows unusual features, such as single-file diffusion, the theory of which was developed in the past but a proper model system was lacking. The orientational motion of individual water molecules exhibits slow dynamics, quite different from those in the bulk. 

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