title: Entrapping of fullerenes, nanotubes, and inorganic nanoparticles by a DNA-chitosan complex: a method for nanomaterials removal.
abstract: We report a protocol for entrapping of various water-dispersed nanomaterials: fullerenes, multiwall carbon nanotubes, quantum dots (semiconductor nanoparticles), and gold nanorods, into a DNA-chitosan complex. In contrast to small-size nanomaterial particles, the bulky DNA-chitosan interpolyelectrolyte complex incorporating the dispersed nanomaterials can be easily separated from aqueous media by centrifugation, filtration, or decantation. While the removal of nanoparticles by centrifugation is equally efficient for every type of nanoparticles and reaches 100%, the higher efficiency of the nanomaterials removal by other two methods is favored by larger size of nanoparticles. The application of this entrapping protocol for removal of nanomaterials from water is discussed.
authors.affiliation: Graduate School of Environmental Studies, Nagoya University, Chikusa, Nagoya 464-8601, Japan. zinchenko@urban.env.nagoya-u.ac.jp
authors.forename: Anatoly A
authors.initials: AA
authors.lastname: Zinchenko
authors.forename: Noriko
authors.initials: N
authors.lastname: Maeda
authors.forename: Shengyan
authors.initials: S
authors.lastname: Pu
authors.forename: Shizuaki
authors.initials: S
authors.lastname: Murata
mesh_terms: D048271:Chitosan / Q000737:chemistry*; D004247:DNA / Q000737:chemistry*; D037741:Fullerenes / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry*; D043942:Nanotubes / Q000737:chemistry*
chemical_list: D037741:Fullerenes; D004247:DNA; D048271:Chitosan