METHOD FOR PRODUCING COPPER(II) OXIDE NANOPARTICLES Russian patent published in 2021 - IPC C01G3/02 B82B3/00 C25B1/01 B82Y40/00 

FIELD: inorganic chemistry; nanotechnology.

SUBSTANCE: invention relates to inorganic chemistry and nanotechnology, it can be used in the manufacture of light-absorbing materials for solar batteries. First, copper electrodes and a solution containing the water: DMFA system as a solvent at their volume ratio of 1:1, oxalic acid and potassium chloride as a background electrolyte are placed in a two-electrode, non-diaphragm electrolytic cell. The mass ratio of water: DMFA : oxalic acid : electrolyte is 20.00:18.89:0.90:0.20. Then, the electrolysis is carried out in the pulse mode at a current density of 4-6 mA/cm², a pulse time of 1 min and a duty cycle of 2. The precipitate is separated by filtration and dried at 50ºC. Thermal decomposition of the resulting precursor - copper(II) oxalate CuC₂O₄ is carried out by heating up to 400ºC in an air atmosphere at a rate of 5ºC /min and calcining at this temperature for 4 hours. Copper(II) oxide nanoparticles are obtained, forming micro-sized agglomerates of polyhedral morphology with expressed photocatalytic characteristics.

EFFECT: invention makes it possible to reduce the duration of the process and its energy consumption.

1 cl, 5 dwg, 4 tbl