| abstract |
FIELD: chemistry. n SUBSTANCE: invention relates to the field of producing coatings containing ceramic two-dimensional structures, namely the hexagonal boron nitride nanosheets having a thickness of 1-10 nm and the characteristic linear dimension from 100 nm to 5 microns, which can be used as a carrier of catalysts, as well as for imparting hydrophobic properties to a surface. The essence of the invention consists in that the reaction mixture is prepared, consisting of boric acid and a catalyst represented by sodium, or potassium, or magnesium, or strontium nitrate taken in amounts providing the B/Me cations ratio in the range of 0.5-5, where Me=Na, or K, or Mg, or Sr; the reaction mixture is applied to the surface in the form of a layer with the thickness from 0.1 to 0.5 mm , and heat treatment in the ammonia atmosphere is performed at a temperature ranging from 900°C to 1100°C. n EFFECT: obtaining uniform coatings of hexagonal boron nitride nanosheets on inner surfaces and on the surfaces of the articles of complex shape. n 4 cl, 1 tbl, 2 ex |