ELECTROCHEMICAL METHOD FOR CREATING A MICROPOROUS STRUCTURE OF A GOLD-BASED ALLOY Russian patent published in 2022 - IPC B01J23/52 C25F3/14 C22B11/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to the creation of a microporous structure of a gold-based alloy with a high specific surface area, suitable for use in the field of catalysis, analytical chemistry, or for sensing elements of biosensors. Proposed is an electrochemical method including selective anodic dissolution of the Ag_0.58Au_0.37Pd_0.05 alloy treated with an anode current in a eutectic mixture of LiCl_0.57CsCl_0.26KCl_0.17 at a temperature of 306 °C; electrolysis is performed in a potentiodynamic mode, increasing the potential from 0 V to 1.1 V at a rate of 1 mV/s, then in a potentiostatic mode with a potential of 0.6 V relative to the reference silver chloride electrode Ag/LiCl_0.57CsCl_0.26KCl_0.17 + 3 mol.% of AgCl.

EFFECT: faster creation of a stable microporous structure of a gold-based alloy during dealloying in molten salt and stabilising of the microporous volumetric structure of a gold-based alloy, created by the claimed method.

1 cl, 2 dwg, 1 tbl