METHOD OF MANUFACTURING A CHEMORESISTOR BASED ON THE NANOSTRUCTURES OF NICKEL OXIDE BY ELECTROCHEMICAL METHOD Russian patent published in 2019 - IPC G01N27/12 

FIELD: nanotechnologies.

SUBSTANCE: invention relates to sensor technology and nanotechnology, in particular, to the development of chemoresistive-type gas sensors used for the detection of gases. Method of manufacturing a chemoresistor based on nickel oxide nanostructures by an electrochemical method is characterized by the fact that in a tank, equipped with a reference electrode and an auxiliary electrode filled with an electrolyte containing nitrate anions and nickel cations, nickel oxide nanostructures are deposited on a dielectric substrate equipped with strip electrodes acting as a working electrode by applying a constant electric potential to the working electrode from -0.5 V to -1.1 V relatively to the reference electrode for 25–100 seconds and at an electrolyte temperature in the range of 20–80 °C, after which the substrate with the deposited layer of nanostructures of nickel oxide is washed with distilled water and dried at room temperature. Method allows to manufacture a low-cost chemoresistor, operating at temperatures of 150–270 °C, which is capable of detecting organic vapors at low (from 1 ppm) concentrations.

EFFECT: method allows to manufacture a low-cost chemoresistor, which is capable of detecting organic vapors at low (from 1 ppm) concentrations.

7 cl, 7 dwg