METHOD OF MODIFYING CARBON NANOTUBES FOR PRODUCING HYDROPHILIC OR HYDROPHOBIC SURFACES Russian patent published in 2019 - IPC C01B32/174 B82B3/00 B82Y40/00 

FIELD: physics.

SUBSTANCE: invention relates to physics and nanotechnology and can be used in production of supercapacitors, filters and sensors. Carbon nanotubes are modified by irradiation with ion streams, for example, argon, helium, iron, carbon, terbium ions to provide the required values of contact angle of wettability. An array of carbon nanotubes with diameter of 8 nm to 250 nm is used, wherein density of array is 0.1 g/cm³ up to 3 g/cm³. For production of carbon nanotubes with value of wettability end angle about 180° surface of nanotubes is irradiated with an ion beam with provision of parameters of displacement per atom (DPA), divided by average diameter of carbon nanotubes in sample up to 0.0075 DPA/nm inclusive. For production of carbon nanotubes with wetting end angle value of 180° up to 90° surface of nanotubes is irradiated with an ion beam with provision of parameters of displacement per atom (DPA) divided by average diameter of carbon nanotubes in sample from 0.0075 DPA/nm to 0.025 DPA/nm inclusive. To obtain carbon nanotubes with wetting ratio of less than 90° surface of nanotubes is irradiated with a beam of ions with provision of parameters of shift per atom (DPA), divided by average diameter of carbon nanotubes in sample, more than 0.025 DPA/nm.

EFFECT: invention enables to control wettability of the surface of carbon nanotubes and obtain hydrophobic or hydrophilic coatings.

4 cl, 4 dwg, 6 tbl, 4 ex