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Alkaline UV/PAA synergistic degradation of iron-cyanide complexes: UV-driven ligand disruption and radical oxidation pathways.

Water Res

September 2025

Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, 400045, PR China.

The advanced degradation of ferricyanide ([Fe(CN)₆]³⁻) in industrial wastewater faces dual bottlenecks of self-acidification-induced hydrogen cyanide (HCN) release and inefficient decomplexation. This study innovatively constructs an alkaline UV/Peracetic Acid (PAA) synergistic system and systematically elucidates its triple action mechanism: (1) UV irradiation at 254 nm directly drives ligand-to-metal charge transfer (LMCT) excitation of ferricyanide, achieving efficient Fe-CN bond breaking (Φ₂₅₄ = 0.235-0.

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Free radical switching behavior between initial neutral and buffer neutral condition during Fenton-like degradation over pyrite/hematite mineral.

Environ Res

September 2025

National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China. Electronic address:

Heterogeneous Fenton-like reactions have broadened the pH adaptation window of traditional homogeneous Fenton during water purification. However, the sharp decrease in their activity under macro-neutral conditions is still a large challenge. More importantly, although it has been realized that the pH value always changes during the heterogeneous Fenton-like process, there are still a few research focuses on the degradation mechanisms in different pH systems, especially the difference between initial neutral and the buffered neutral system.

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One-step precipitation and coordination mechanism for highly efficient Fe-Cu separation in acidic solutions.

J Hazard Mater

August 2025

School of Metallurgy and Environment, Central South University, Changsha 410083, China; State Key Laboratory of Advanced Metallurgy for Non-ferrous Metals, Changsha 410083, China; Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, Changsha 410083, China.

The similar chemical behavior of metal elements in acidic wastewater remains a significant challenge for their deep separation. A key limitation lies in overcoming weak metal selectivity and low separation efficiency. Our study introduced an innovative regulation strategy to enhance the coordination selectivity, enabling the rapid precipitation of Fe and the efficient complexation of Cu.

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Minimizing Surface Defects by Chemical Passivation for High-Performance Perovskite/Silicon Tandem Solar Cells.

ChemSusChem

August 2025

Institute of Photovoltaics, School of Physics and Materials Science, Nanchang University, Nanchang, 330031, China.

As the pursuit for cost reduction of photovoltaic technologies goes on, the interest in high-efficiency Si-tandem solar cells has been strongly increasing, among which perovskite/silicon has demonstrated impressive results and prospects for further enhancements. However, the existence of deleterious defects at the surface of wide-bandgap perovskite films in the top solar cells dramatically impedes the potential industrial applications of perovskite/silicon tandem solar cells. In this review, begin by summarizing the various types of defects and the passivation mechanisms to provide guidance for the passivation protocols.

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Achieving low-energy and high-efficiency sieving of nitrogen rejection from methane in natural gas purification processes requires precise control of material pore size with a resolution of 0.1-0.2 Å, which is highly challenging.

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