Chemical/electric energy-driven processes dominate the traditional precious metal (PM) recovery market. The renewable energy-driven selective PM recycling approach crucial for carbon neutrality is under exploration. Herein, via an interfacial structure engineering approach, coordinational-active pyridine groups are covalently integrated onto the photoactive semiconductor SnS 2 surface to construct Py-SnS 2 . Triggered by the preferred coordinational binding force between PMs and pyridine groups, together with the photoreduction capability of SnS 2 , Py-SnS 2 shows significantly enhanced selective PM-capturing performance toward Au 3+ , Pd 4+ , and Pt 4+ with recycling capacity up to 1769.84, 1103.72, and 617.61 mg/g for Au 3+ , Pd 4+ , and Pt 4+ , respectively. Further integrating the Py-SnS 2 membrane into a homemade light-driven flow cell, 96.3% recovery efficiency was achieved for continuous Au recycling from a computer processing unit (CPU) leachate. This study reported a novel strategy to fabricate coordinational bonds triggered photoreductive membranes for continuous PM recovery, which could be expanded to other photocatalysts for broad environmental applications.
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.
Advanced smart devices for indoor organic pollutant treatment to ensure a clean indoor environment are highly important for sustainable human health. Herein, a functional wood window capable of photocatalytic degrading the indoor pollutants urea has been developed while maintaining good light transparency and gas exchanging capability. Benefiting from the photocatalytic oxygen (O2) reduction capacity of resorcinol-formaldehyde (RF) resin integrating with wood (RF@wood). The urea can be degraded entirely via the oxidation of hydroxyl radicals (·OH) originating from the photocatalytic splitting of H2O2. By further employing a large-scale (150 mm × 200 mm) RF@wood window for the public bathroom urea pollution control, 100% urea removal efficiency is achieved within 1 h. This novel functional wood window for effective indoor atmospheric urea control may inspire future research on environmentally functional and intelligent furniture design.
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