Production of Cu/Ag Porous Bimetal by the Galvanic Replacement of Dezincified Brass

Autor:	Artur Mazur, G. I. Zozulya, Orest Kuntyi, I. P. Mertsalo
Rok vydání:	2021
Předmět:	Materials science Nanoporous Mechanical Engineering Alloy chemistry.chemical_element engineering.material Condensed Matter Physics Copper Cathode law.invention Bimetal Anode Brass chemistry Chemical engineering Mechanics of Materials law visual_art Galvanic cell engineering visual_art.visual_art_medium General Materials Science
Zdroj:	Materials Science. 56:668-672
ISSN:	1573-885X 1068-820X
Popis:	The production of Cu/Ag nano-bimetals for the CO2 reduction on a catalytically active cathode is studied according to the following scheme: the formation of porous copper as a result of selective anodic dezincification of Cu–Zn alloy in an H2SO4 solution and deposition of silver nanostructures by the galvanic replacement. It is shown that the nanosized dendritic formations of silver (70–100 nm) are deposited on the surface of nanoporous copper in a 0.01 M AgNO3 solution in the ultrasound field. It is shown that the main factor of influence on the morphology of the reduced silver on porous copper is the duration of the galvanic replacement. It is also demonstrated that the electrodes with porous Cu/Ag nanosurfaces are characterized by a much higher catalytic activity as compared with brass foil and porous copper.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b8f35d1d27120716b9390157040b1dce https://doi.org/10.1007/s11003-021-00480-y Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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