Interfacial Coordination Bonding-Assisted Redox Mechanism-Driven Highly Selective Precious Metal Recovery on Covalent-Functionalized Ultrathin 1T-MoS₂

Abstract

Rational design of functional material interfaces with welldefined physico-chemical-driven forces is crucial for achieving highly efficient interfacial chemical reaction dynamics for resource recovery. Herein, via an interfacial structure engineering strategy, precious metal (PM) coordination-active pyridine groups have been successfully covalently integrated into ultrathin 1T-MoS 2 (Py-MoS 2 ). The constructed Py-MoS 2 shows highly selective interfacial coordination bonding-assisted redox (ICBAR) functionality toward PM recycling. Py-MoS 2 shows state-of-theart high recovery selectivity toward Au 3+ and Pd 4+ within 13 metal cation mixture solutions. The related recycling capacity reaches up to 3343.00 and 2330.74 mg/g for Au 3+ and Pd 4+ , respectively. More importantly, above 90% recovery efficiencies have been achieved in representative PMs containing electronic solid waste leachate, such as computer processing units (CPU) and spent catalysts. The ICBAR mechanism developed here paves the way for interface engineering of the welldocumented functional materials toward highly efficient PM recovery.

Dual-Doped Nickel Sulfide for Electro-Upgrading Polyethylene Terephthalate into Valuable Chemicals and Hydrogen Fuel

“…Nevertheless, the development of highly electroactive, selective, earth-abundant, and stable EGOR electrocatalysts remains a big challenge, and current work mainly focuses on TM oxides, phosphides, and nitrides. TM sulfides, with high earth abundance, good electronic/chemical properties, and environmental friendliness [ 27 , 28 ], have exhibited good electrochemical performance for diverse reactions, such as urea oxidation reaction, carbon dioxide reduction, batteries, oxygen evolution reaction (OER), and hydrogen evolution reaction (HER) [ 29 – 36 ]. However, the design of efficient TM sulfides for EGOR is largely unexplored.…”