Xie Quan

Electropolarization-Promoted Membrane Fouling Mitigation in Treating Actual Chemical Secondary Effluent: Underlying Mechanism and Engineering Demonstration

Linhua Rao, Jiajian Xing, Gaoliang Wei, Lilantian Cheng et autres

Abstract Electrically conductive membranes (ECMs) offer a promising approach for advanced wastewater treatment as they can mitigate membrane fouling by an in situ electroregulation strategy. However, current studies have mainly focused on synthetic wastewater at a laboratory scale, which cannot fully reflect …

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Electrically Conductive Membrane-Assisted Anammox MBR via Extracellular Electron Transfer for Enhanced Nitrogen Removal under Nitrite-Deficient Conditions

Siyu Wang, Tao Liu, Shuo Chen, Gaoliang Wei et autres

Abstract Conventional anaerobic ammonium oxidation (anammox) relies on nitrite (NO2–) as the electron acceptor for ammonium (NH4+) oxidation. However, NO2– is often insufficient in ammonium-rich wastewater, necessitating complex pretreatment to meet the stoichiometric NH4+: NO2– ratio of 1:1.32. Recent studies suggest that …

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Dynamic chloride coordination enables selective pulsed electrocatalytic upcycling of 4-chlorophenol on FeN2O2 single-atom catalyst

Jiachen Wang, Jinxin Li, Mengjiao Xie, Xie Quan et autres

The electrocatalytic upcycling of halogenated pollutants into value-added chemicals presents a sustainable frontier, yet precise transformation pathways remain challenging. Here, we report a pulsed electrocatalytic strategy that exploits a temporal modulation to realize a dynamic coordination mechanism, enabling the sequential conversion of …

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Remodeling Interfacial Hydrogen-Bond Network Via Crystal Facet Control for Efficient Urea Electrosynthesis

Qingming Zeng, Yan Zhang, Shuyan Yu, Yian Wang et autres

The electrochemical coreduction of CO2 and nitrate for urea synthesis is hindered by competing side reactions due to conflicting proton demands. Here, using facet-engineered Cu2O nanocrystals, we find that the (100) facet achieves a urea yield of 84.4 mmol h-1 gcat-1, 3.2- …

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Electro-controlled angstrom-scale membrane channels and ion dehydration for tunable ion and molecule separations

Haiguang Zhang, Qian Li, Xiaoqing Dong, Gaoliang Wei et autres

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Electrocatalytic Nitrate Reduction in Environmental Contexts: From Record-Oriented Catalysis to Scenario-Oriented Deployability

Linghui Meng, Jingguo Li, Xie Quan, Yanbiao Liu

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Coordination-Engineered Fe Single Atoms Enable Synergistic PVC Upcycling into Fuel-Range Hydrocarbons via Fenton-Like Pathway

Qingyun Bai, Jiuyi Wang, Xing Xu, Xuning Li et autres

Poly(vinyl chloride) (PVC) poses a persistent environmental challenge due to its high chlorine content and additive-mediated recalcitrance. Herein, we report an N,O-dual-coordinated iron single-atom catalyst (Fe-N2O2-hCN) integrated with palladium nanoparticles (Pd NPs) for efficient hydrothermal Fenton-like upcycling of PVC into fuel-range hydrocarbons. …

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In Situ Quorum Quenching Effect Induced by Negative Potential on Electro-Conductive Membranes for Membrane Fouling Control in Membrane Bioreactors

Guangze He, Tao Liu, Jiajian Xing, Linhua Rao et autres

Membrane fouling is a major impediment to the widespread application of membrane bioreactors (MBRs) for water treatment. In recent years, the electro-conductive membrane bioreactor (E-MBR) has demonstrated efficacy in mitigating membrane fouling. The application of a negative potential to the electro-conductive membrane …

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Cation-tuned acidic electrified interface for hydrogen peroxide electrosynthesis with industrial-level current densities in natural seawater

Peike Cao, Xuanchen Liu, Yanming Liu, Zihao Zhao et autres

Abstract Electrocatalytic oxygen reduction reaction in seawater represents a sustainable approach for hydrogen peroxide (H 2 O 2 ) production, yet industrial-level current densities trigger severe cathodic alkalization and scaling issues, while aggressive acidification of the reaction system compromises catalytic efficiency. Here …

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Efficient Urea Electrosynthesis by Encapsulating Cu and ZnO Nanoparticles in Carbon Nanotubes

Jiahao Zhang, Qinyue Wu, Xinfei Fan, Xie Quan et autres

Electrocatalytic reduction of CO 2 and N O 3 − offers a clean and sustainable alternative to urea production. However, urea electrosynthesis still suffers from low efficiency due to insufficient active sites and low coverage of intermediates for C–N coupling. Herein, Cu …

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Integrating Research and Education: A Laboratory Module on Fabricating Electroactive Carbon Nanotube Membrane for Environmental Functional Materials Education

Yanbiao Liu, Qingyun Bai, Mengjiao Xie, Wei Liu et autres

Bridging the gap between cutting-edge research and classroom practice, this work presents a laboratory module that introduces students to environmental functional materials through the fabrication and application of electroactive carbon nanotube (CNT) membranes. Designed for master’s and advanced undergraduate students, the module …

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Steering the nitrate electroreduction pathway via nanoconfinement-induced hydrogen-bond network regulation

Linghui Meng, Chensi Shen, Min Zhou, Xin Wang et autres

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