Applied Catalysis O Open, Journal Year: 2025, Volume and Issue: unknown, P. 207033 - 207033
Published: Feb. 1, 2025
Language: Английский
Science Advances, Journal Year: 2024, Volume and Issue: 10(21)
Published: May 24, 2024
Palladium (Pd) and gold (Au) are the most often used precious metals (PMs) in industrial catalysis electronics. Green recycling of Pd Au is crucial difficult. Here, we report a peroxydisulfate (PDS)–based advanced oxidation process (AOPs) for selectively recovering from spent catalysts. The PDS/NaCl photochemical system achieves complete dissolution Au. By introducing Fe(II), PDS/FeCl 2 ·4H O solution functioned as Fenton-like system, enhancing leaching efficiency without xenon (Xe) lamp irradiation. Electron paramagnetic resonance (EPR), 18 isotope tracing experiments, density functional theory calculations revealed that reactive species SO 4 · − , ·OH, Fe(IV)═O were responsible oxidative process. Lixiviant one-step electrodeposition recovered high-purity Strong acids, poisonous cyanide, volatile organic solvents not during whole recovery, which enables an efficient sustainable metal recovery approach encourage AOP technology secondary resource recycling.
Language: Английский
Citations
9
Small Structures, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 26, 2025
Persistent organic contaminants in water pose imminent threats to aquatic ecosystems and human health, yet conventional treatment systems are not able remove them effectively. Electrochemical oxidation is a promising alternative for the mineralization of persistent compounds. Herein, novel hierarchical porous PbO 2 electrode fabricated via direct electrodeposition on templated fluorine‐doped tin oxide surface. Physical electrochemical characterization confirm superior properties (e.g., enhanced active surface areas) produced electrode. In addition, compared with macroporous films, shows significantly improved degradation performance against variety pollutants, including sodium dodecyl sulfate, rhodamine B, diclofenac. Overall, it demonstrated that can be utilized efficient contaminants.
Language: Английский
Citations
1
Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)
Published: Jan. 28, 2025
Discharge of wastewater containing nitrate (NO3−) disrupts aquatic ecosystems even at low concentrations. However, selective and rapid reduction NO3− concentration to dinitrogen (N2) is technically challenging. Here, we present an electrified membrane (EM) loaded with Sn pair-atom catalysts for highly efficient N2 in a single-pass electrofiltration. The design facilitates coupling adsorbed N intermediates on adjacent atoms enhance selectivity, which challenging conventional fully-isolated single-atom catalyst design. EM ensures sufficient exposure the intensifies interaction through mass transfer enhancement provide more coupling. We further develop reduced titanium dioxide as anode generate free chlorines fully oxidizing residual ammonia (<1 mg-N L−1) N2. sequential cathode-to-anode electrofiltration realizes near-complete removal 10 L−1 ~100% selectivity water resident time order seconds. Our findings advance practical solution contamination authors report that mg-N/L during electro-filtration.
Language: Английский
Citations
1
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 14, 2025
Abstract Micropollutants (MPs) pose a significant threat to global water environments, necessitating advanced treatment technologies. Distributed electrochemical systems utilizing electrified membranes (EMs) show promise but face challenges due unclear mass transfer and reaction mechanisms within membrane pores of varying sizes surface chemistry. This review examines the interplay between spatial confinement, transfer, chemical reactions in EMs, focusing on reactive species (RSs), EM‐MPs system evolution, phenomena across pore from microns sub‐nanometer scales. Despite advances RS research, coherent mechanistic understanding MP degradation under confinement remains elusive, particularly extreme where deviate bulk behavior. Gaps knowledge stem complex dynamics, thermodynamics kinetics, need for detailed theoretical describe effects. summarizes generation detection methods RSs, outlines progress EM operational modes, elucidates how impacts both reactions. Future research shall focus precise identification quantitative regulation optimization processes relation RSs MPs, investigation active sites energetic barriers confined environments.
Language: Английский
Citations
1
Applied Catalysis O Open, Journal Year: 2025, Volume and Issue: unknown, P. 207033 - 207033
Published: Feb. 1, 2025
Language: Английский
Citations
1