Скачать полную версию статьи (в PDF формате)

М. В. Манило, Г. С. Литвинов, Ш. Барань
«Адсорбция глутамина и глутаминовой кислоты и её влияние на электрокинетический потенциал многослойных углеродных нанотрубок»
123–135 (2016)

PACS numbers: 68.37.Lp, 68.43.Mn, 81.05.U-, 81.16.Fg, 82.45.Yz, 82.70.Uv, 87.85.Rs

Kinetics and equilibrium adsorption of glutamine and glutamic acid from their aqueous solutions by carbon nanotubes (NTs) in a wide range of pH (2.0–12.0) are studied. The adsorption equilibrium is reached after 20 min contact of aminoacids with NTs. Two steps on the adsorption isotherms of aminoacids onto NTs surface are observed. It is supposed that the adsorbate molecules in the first monolayer are oriented flat relative to the surface by their similar hydrocarbon parts. Adsorption of aminoacids results in a significant decrease in the absolute value of the electrokinetic potential of nanotubes.