Selective recovery of silver from waste low-temperature co-fired ceramic and valorization through silver nanoparticle synthesis

Electrochemical Growth of Ag/Zn Alloys from Zinc Process Solutions and Their Dealloying Behavior

“…However, the supply of silver currently faces the twin challenges of increased silver consumption, whilst there is a concurrent depletion in the availability of high-grade raw materials . To realize sustainable development concepts, the further exploitation of secondary raw materials as metal sources for functional material production has attracted great attention. − In contrast, precious metals [like Au, Ag, and platinum group metals (PGMs)] widely present in hydrometallurgical process solutions of base metals (Zn, Cu, Ni, and so forth) have been underutilized as typical sources for functional material production because of their minute concentrations (ppm level or lower). − The recent innovation of the electrodeposition-redox replacement (EDRR) method has been found to be a promising approach for metal recovery from extremely low concentration solutions. − Moreover, because of its capability to control the resultant product properties, the EDRR approach also has significant potential for streamlining the traditional manufacturing routes by directly preparing high value-added functional surfaces from process and waste solutions. For example, the feasibility of the direct preparation of Pt/Ni, Ag/Cu, and Ag/Zn bimetallic particles from different hydrometallurgical solutions has been demonstrated.…”