FIELD: chemistry.
SUBSTANCE: invention can be used for complex diagnosis of physical and chemical properties of nanostructured coatings based on single nanoparticles of metals and metal oxides. Essence of invention lies in that sample, which is a conducting or semiconductor substrate with coating applied on its surface based on single metal nanoparticles and metal oxides, is scanned by means of a metal tip of a scanning tunnel microscope and is analysed spectroscopically by measuring current-voltage curves of tunnel nanocontact in order to establish shape and sizes of nanoparticles, electronic structure of nanoparticles, degree of crystallinity of nanoparticles and nanoparticles of defects, then, without interruption of processes of scanning and measurement of volt-ampere relationships of tunnel nanocontact, dosed holding in gas medium of chemical reagent is performed in order to calculate adsorption adhesion coefficient and establish products and form of adsorption of chemical reagent on surface of nanoparticles, with subsequent removal of coating of reagent adsorbed on nanoparticles by heating sample, wherein during sample exposure in gas medium of chemical agent, time of scanning selected section of sample surface and pressure of reagent is selected so that their product is not more than 1×10-6 torr×s.
EFFECT: technical outcome is possibility of simultaneous determination of a large number of different parameters of coating nanoparticles themselves and their physical and chemical properties.
4 cl, 5 dwg, 1 tbl
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