AbstractSimple nanoporous alumina matrix modification procedure. in which the electrically highly insulating alumina barrier layer at the bottom of the pores is replaced with the conductive layer of the gold beds. was described. This modification makes possible the direct electron exchange between the underlying aluminum support and the redox species encapsulated in the alumina pores. https://chefesquipmenters.shop/product-category/cold-beverage-machine-parts/