Abstract: A system for selective electrodeposition for metal recycling includes an electrochemical cell comprising: a fluid including first and second transition metals and a salt at a molar concentration of greater than 1 M; a working electrode in contact with the fluid. where the working electrode has a surface coated with a positively charged polyelectrolyte: and a counter electrode in contact with the fluid and spaced apart from the working electrode. The system also includes a power supply electrically connected to the working and counter electrodes.

Abstract: Redox copolymers for electrochemically-assisted electrosorption and release of an organic micropollutant from a contaminated water source are provided. Electrochemical systems including the redox copolymers immobilized to a first electrode such that the first electrode is configured to be tunable in redox activity, hydrophobicity, fluorophilicity, and/or binding affinity, and to be tunable toward a target molecule, are further provided. Methods of and systems for separating and degrading a target molecule in tandem from a fluid are further provided.

Abstract: A redox-active composite comprises a conductive substrate including electrosorbent regions and electrocatalytic regions thereon, where the electrosorbent regions comprise a redox-active polymer and the electrocatalytic regions comprise a metal oxide. An electrochemical cell for electrochemical reactive separation of nitrate to ammonia includes a vessel configured for flow of a fluid therethrough, a bifunctional electrode comprising the redox-active composite positioned in the vessel, and a counter electrode spaced apart from the bifunctional electrode in the vessel.