JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Yuan Wang,Haihong Zhong,Qianqian Xu,Miao Dong,Jianxin Yang,Weiting Yang,Yongjun Feng,Zhong-Min Su
Electrochemically upcycling polyvinyl chloride (PVC) into high-value small molecules represents a sustainable strategy for mitigating plastic pollution. Herein, a cost-effective self-supporting electrode with abundant vacancies, i.e. , NiFe-layered double hydroxide nanoarrays in-situ grown on the surface of carbon paper (denoted as NiFe V -LDH/CP), is developed for the electro-Fenton degradation of PVC microplastics (MPs). The NiFe V -LDH catalyst shows a high selectivity of 76 % towards H 2 O 2 production via two-electron oxygen reduction reaction (2e - ORR). Density functional theory (DFT) calculations reveal that the energy barrier of rate-determining step (*H 2 O 2 desorption) decreases over the vacancy-enriched NiFe V -LDH related to the pristine NiFeZn-LDH. The influence of vacancy concentration, reaction temperature and initial concentration of PVC MPs were systematically investigated. Under optimized conditions, the NiFe V -LDH/CP electrode exhibits an outstanding degradation performance of PVC MPs via direct cathodic reduction and oxidation by hydroxyl radicals. This work demonstrates that the electro-Fenton technology using LDH-based self-supporting electrodes is a promising and environmentally-friendly approach for waste plastic treatment.
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高影响因子
SEPARATION SCIENCE AND TECHNOLOGY
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2025
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IF 2.3
Chunlai Wu,Aimaiti Gali,Chuanyun Peng,Yalei Miao,Juan Li,Xinyu Gao
The treatment of dye wastewater is of crucial significance for alleviating water pollution, ensuring ecological security and achieving the sustainable utilization of water resources. In this work, the 1-allyl-3-butylimidazolium chloride ionic liquid modified Co/Fe-LDH (Co/Fe-LDH@IL) was successfully synthesized and explored for elimination Methylene Blue (MB) from aqueous solutions. Characterizations revealed that the incorporation of ionic liquids notably increased the specific surface area from 5.37 m2.g−1 to 8.15 m2.g−1. Additionally, the number of surface active sites, was significantly enhanced. For a 25 mL MB solution with an initial concentration of 300 mg.L−1, the optimal dosage of Co/Fe-LDH@IL was determined to be 30 mg, achieving adsorption equilibrium within 20 min. Under these conditions, the maximum adsorption capacity was 517.43 mg.g−1. Kinetic studies indicated that the pseudo-second-order model accurately described the process. The Langmuir isotherm model provided a better fit than the Freundlich model, indicating a homogeneous monolayer adsorption mechanism. Column adsorption experiments further validated the superior performance of Co/Fe-LDH@IL in treating MB solutions of different concentrations. The adsorption mechanism involved electrostatic interactions, interface regulation by IL molecules, and monolayer π-π interaction adsorption on imidazole functional group. Co/Fe-LDH@IL exhibits outstanding adsorption performance and stability, showing great potential for efficiently treating MB-containing wastewater.
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Molecular Catalysis
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2026
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IF 4.3
Kai Peng,Shasha Zhao,Hanyue Xiao,Yue Zeng,Xin Ye,Yunmeng Yan,Yurong Liu,Rong Ding,Tianwu Hou,Guowei Deng,Congdi Chen,Min Yang
Propose the “Ru-O-Co/Cu bridge structure” strategy to establish electronic coupling and a cooperative network, achieving multi-site synergistic catalysis. • In the acidic solution, at a current density of 10 mA cm −2 , the HER overpotential of Ru 2 /CoCu-LDH@CF is only 19.76 mV, with stability exceeding 300 h. • In the acidic solution, the dual electrodes OWS voltage is as low as 1.35 V. Under the “backdrop of the “dual carbon” strategy steering global energy structure transformation, green hydrogen—an ideal clean energy carrier featuring zero carbon emissions and high energy density—requires large-scale production to boost renewable energy utilization and attain carbon neutrality. To address this challenge, this work, aligned with industrial demands for low-cost green hydrogen, fabricated low-ruthenium-doped Ruₓ/CoCu-LDH@CF (x = 0.3, 0.6, 0.9 mmol) in situ on conductive copper foam (CF) via synergistic effect. Ruthenium doping effectively elevates the material’s electrical conductivity while regulating the electronic configuration of CoCu-LDH. The Ruₓ/CoCu-LDH@CF catalyst demonstrates outstanding activity across the all pH range: In 1 M KOH, the Ruₓ/CoCu-LDH@CF electrode requires only 58.6 mV and 202.4 mV to achieve a current density of 10 mA cm⁻² in both hydrogen evolution reaction (HER), oxygen evolution reaction (OER), respectively, and maintains stable for over 300 h. In 0.5 M H 2 SO 4 , at a current density of 10 mA cm −2 , the HER overpotential of Ru 2 /CoCu-LDH@CF is only 19.76 mV, the overall water splitting (OWS) voltage is as low as 1.35 V. In 1 M PBS, the Tafel slope is as low as 25.01 mV dec⁻¹, signifying fast reaction kinetics. This superior catalytic behavior stems primarily from the Ru-O-Co/Cu bridging structure, which facilitates efficient electron transfer. This advancement offers material support for the efficient, stable production of green hydrogen, further advancing renewable energy-driven electrochemical water splitting toward practical application. It carries substantial theoretical and practical value for curbing carbon emissions, aiding the realization of “dual carbon” targets, and building a clean energy system. Download: Download high-res image (358KB) Download: Download full-size image
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PROGRESS IN ORGANIC COATINGS
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2026
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IF 7.9
Xin Yu,Qinghe Gao,Guoxuan Li,Zhigang Lei,Chao Wang,Li Zhang,Huijuan Qian,Mingliang Zhu,Jin Huang,Conying Lu,Zhichao Zhang
Microbiologically influenced corrosion (MIC) induced by sulfate-reducing bacteria (SRB) severely threatens the service of metal materials, and traditional purely passive barrier coatings fail to withstand the continuous attack of biofilms. Herein, a ternary composite material (LDH-ZIF@CaO₂) composed of CoAl-LDH, ZIF-67, and CaO 2 was synthesized and incorporated into epoxy resin to construct an anti-corrosion coating that integrates active antibacterial and anti-corrosion properties. The study reveals that this composite possesses typical microenvironment responsiveness: in the acidic environment generated by microorganism metabolism, the Co ions released from the system can catalyze H₂O₂ (produced by CaO₂ hydrolysis) to undergo a Fenton-like reaction, generating highly oxidizing hydroxyl radicals (•OH) and singlet oxygen ( 1 O₂). This achieves highly efficient eradication of SRB and biofilm detachment. Electrochemical impedance spectroscopy (EIS) tests indicate that when the CaO₂ loading is 200 mg, the coating exhibits the optimal anti-corrosion performance, maintaining high compactness and high impedance characteristics even after 30 d of immersion, the impedance value is 10 8 Ω cm 2 , which is 2 orders of magnitude higher than that of epoxy resin systems. Furthermore, this paper thoroughly elucidates that the excessive addition of CaO₂ (400 mg) leads to filler agglomeration, internal gas pressure, and oxidative degradation of the resin matrix caused by excessive free radicals, which conversely accelerates coating failure. This study provides a new theoretical basis and strategy for designing microenvironment-responsive, anti-MIC coatings.
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BIOELECTROCHEMISTRY
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2026
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IF 4.9
Lan Jiang,Lina Zou,Jing Dong,Ping Zhang,Jian Zhou,Hao Jiang,Huanyu Ren,Huiru Niu,Hao Liao,Xiaojing Zhang,Shanshan An,Fei Ren,Xiuhong Ge,Feiyan Yang,Lang Cheng,Hongzhi Pan,Shengzhong Rong,Hongkun Ma
Non-coding RNAs are critical tumor biomarkers, rendering innovations in their detection technologies highly significant. To overcome the limitations of conventional single-signal electrochemical biosensors (susceptibility to interference, insufficient stability), this study developed a novel ratiometric electrochemical DNA biosensor with dual-signal amplification. Its core novelty is the rational integration of two synergistic nanomaterials: Ferrocene-functionalized MgAl-layered double hydroxide (Fc@MgAl-LDH, as stable immobilization matrix and internal reference signal source) and AuNPs@Fc@MgAl-LDH coupled with MB-cDNA@AuNPs, which construct a cascaded signal amplification pathway. The sensing mechanism involves two-stage amplification: Primary by high-loading-capacity AuNPs@Fc@MgAl-LDH, secondary by MB-cDNA@AuNPs hybridizing with electrode-immobilized microRNA-21 (miRNA-21). The ratiometric signal ( I MB / I Fc ) enables built-in correction, boosting detection accuracy and reproducibility. After systematic optimization, the sensor has a wide linear range (1.0 fM–0.1 nM) and an ultra-low LOD of 0.757 fM, eliminating RNA extraction/enzymatic amplification to simplify operation. Serum validation shows high accuracy (95.3%–101.4% recovery), indicating strong clinical diagnostic application potential.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Jiahuan Wang,Zuozhu Yin,Xiangyu Han,Yongcun Ma,Zhen Hong,Chan Xie,Zhiyang Jiang,Mingshan Xue
A superhydrophobic conductive fabric is fabricated via scalable spray-coating of Zn-Co LDH/MWCNTs/POTS. • The fabric achieves > 96% oil-water separation efficiency with excellent cyclic stability. • Integrated electrocatalytic function degrades organic pollutants within 2 h under low voltage. • Robust durability under abrasion, chemical, thermal, and vibration stresses is demonstrated. • COMSOL simulations reveal the wettability–pore synergy governing enhanced separation. The ingress of moisture into aircraft engine lubrication systems poses a serious threat to flight safety and component service life; consequently, there is an urgent need to develop novel multifunctional materials capable of oil-water separation and environmental remediation. In this study, a three-dimensional superhydrophobic conductive fabric with a structure resembling peacock feathers was fabricated for oil-water separation in the aerospace sector. The material was prepared by spraying a composite of zinc-cobalt layered double hydroxide (LDH), modified with perfluorooctyl triethoxysilane (POTS) and multi-walled carbon nanotubes (MWCNTs), onto a conductive fabric substrate. It exhibits superhydrophobicity (water contact angle as high as 161.2°), electrocatalytic degradation capability and oil-water separation capability. The conductive network of multi-walled carbon nanotubes enables electrocatalytic degradation at a low voltage of 20 V, whilst the superhydrophobic surface selectively allows rapid oil penetration, achieving oil-water separation efficiencies of 96–99.4% under thermal radiation conditions. The material maintains stable superhydrophobicity even after repeated cycles and exposure to mechanical abrasion, corrosive media and high-temperature ageing (220°C). COMSOL simulations elucidated the synergistic mechanism between selective wetting and thermal viscosity modulation. This study provides an integrated solution for next-generation aviation fuel systems that combines physical separation with electrocatalytic purification. Furthermore, the coating preparation process is simple and the raw materials readily available, offering significant potential for large-scale mass production. Download: Download high-res image (178KB) Download: Download full-size image A superhydrophobic conductive fabric (HCF) modified with Zn-Co LDH/MWCNTs composite was fabricated. Through micro-nano structure regulation and surface energy modification, it synergistically achieves efficient oil-water separation, low-voltage electrocatalytic degradation, and self-cleaning properties. Exhibiting excellent mechanical stability and chemical durability under harsh operating conditions of aero-engines, this material provides a multifunctional integrated solution for water pollution control and contaminant purification in aviation fuel systems.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Zhenyu Wang,Bo Li,Peng Sun,Binhui Mao,Xinqiang Mao,Jingjie Dai,Zonghua Wang
Efficient generation, transport, and utilization of plasmon-induced hot carriers remain fundamental challenges in the development of photoresponsive electrocatalysts. Herein, a hierarchical Au nanoparticle (NP)-decorated NiFe layered double hydroxide/Ni(TCNQ) 2 heterostructure supported on copper foam (Au NPs–NiFe LDH–Ni(TCNQ) 2 /CF) with a rationally designed conductive Ni(TCNQ) 2 interlayer is engineered, and the Au NPs size is systematically optimized to maximize plasmon-enhanced electrocatalytic performance. The conductive Ni(TCNQ) 2 nanorods serve as both electron-transport pathways and structural scaffolds enabling the growth of ultrathin NiFe LDH nanosheets, while plasmonic Au NPs enable light-driven electronic modulation. The integration of these components establishes efficient pathways for charge generation, separation, and transfer, thereby improving the utilization efficiency of plasmon-generated carriers. Notably, a systematic size-dependent investigation identifies 5-nm Au NPs as the optimal plasmonic configuration, exhibiting the strongest localized surface plasmon resonance enhancement. Under light irradiation, the optimized catalyst achieves an additional overpotential reduction of 22 mV at 100 mA cm −2 and a decreased Tafel slope of 60.47 mV dec −1 , highlighting the critical role of NP dimensions in regulating hot-carrier generation and interfacial charge-transfer efficiency. Importantly, the synergistic interaction between plasmon-induced electronic excitation and conductive interlayer engineering effectively promotes charge transport across the heterointerface and enhances the overall electrocatalytic process. This study provides new insights into the rational design of plasmon-enhanced electrocatalysts and offers a versatile strategy for integrating hot-carrier modulation with conductive interface engineering in solar-driven energy conversion systems.
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Small
·
2025
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IF 12.1
Zi-Ye Liu,Jiu-Jiu Ge,Lei Yu,Sian-Hong Ong,Lian-Jian Zhang,Ji-Ming Hu
Efficient and durable alkaline water electrolysis at industrial current densities remains a key challenge due to sluggish oxygen evolution kinetics and poor stability of hydrogen evolution reaction (HER) catalysts in alkaline media. Herein, a unique Pt–Ni/Fe coordinated single-atom Pt catalyst anchored on nickel-iron layered double hydroxide (ePt/NiFe LDH), is reported synthesized via a facile electrodeposition process within 30 min. Unlike the conventional Pt-O-M (metal) coordination, the newly discovered Pt–Ni/Fe bonding structure significantly modulates the electronic structure of the NiFe active sites, thereby synergistically enhancing both HER and OER activities. Benefiting from this optimized coordination environment and the nanoflower architecture, the ePt/NiFe LDH@e-nf electrode delivers outstanding overall water splitting performance, achieving a low cell voltage of 1.42 V at 10 mA cm −2 and 1.54 V at 100 mA cm −2 without iR compensation. More importantly, it maintains ultrastable operation over 1440 h at an industrial-level current density of 500 mA cm −2 , outperforming commercial Pt/C–RuO₂ benchmarks. This work demonstrates a promising strategy for designing high-performance and durable single-atom catalysts for practical alkaline water electrolysis applications.
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FOOD CHEMISTRY
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2026
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IF 10.4
Yuanyi Wu,Yanan Sun,Xiaoxin Tan,Guiying Yang,Kai Kang,Yi Yang,Weijun Kang
ANTS/MgFe-LDH nanozymes exhibit dual functionalities: intrinsic fluorescence and peroxidase-like activity. • Independent fluorescence and colorimetric signals were achieved using the dual-functional LDH. • Integration with Random Forest algorithm enabled 96.3% accurate and selective classification of nine antioxidants and metal ions. • A 3D-printed dark box coupled with a hydrogel-based assay enhanced the platform's practicality and usability. • The developed sensor demonstrated reliable proof-of-concept performance for recognizing/classifying antioxidants and metal ions in real food samples. Antioxidants and metal ions require identification to elucidate their biological roles and associated health benefits. Recently, multi-modal sensors based on nanozymes have emerged as innovative tools. However, integrating multi-channel data with machine learning remains underexplored. Here, we present a multi-modal sensor based on a Layered Double Hydroxide (LDH) nanozyme framework. This sensor integrates a fluorescent probe within the LDH interlayer and utilizes the intrinsic peroxidase-like (POD) activity of its layers. Notably, this design generates independent dual-mode fluorescence and colorimetric signals free from crosstalk. Experimental results demonstrate distinct fingerprints for nine common antioxidants and metal ions, adaptable to complex food matrices. We further integrated the nanozyme into a sodium alginate (SA) hydrogel microplate for a practical, smartphone-assisted assay. Combined with a Random Forest (RF) algorithm, the system achieves 96.3% classification accuracy. Demonstrating reliable recognition/classification performance and practical applicability, this robust intelligent sensing strategy provides a promising proof-of-concept platform toward food quality monitoring. Download: Download high-res image (101KB) Download: Download full-size image
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ELECTROCHIMICA ACTA
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2026
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IF 5.8
Mei Wang,Lei Yang,Zesheng Wang,Liying Jiang
A novel N-MLG@Ni–Mn LDH/Cys electrode was constructed for Cu²⁺ detection in sweat. • Dual active sites significantly enhance Cu²⁺ adsorption and signal amplification. • The sensor exhibits a wide detection range and a low detection limit for Cu²⁺. • The synergistic effect of N-MLG and Ni–Mn LDH improves electrochemical performance. In this study, a highly sensitive electrochemical sensor based on a N-MLG@Ni-Mn LDH/Cys nanocomposite was fabricated for the detection of trace Cu²⁺ in sweat. Nitrogen-doped multilayer graphene (N-MLG) was electrostatically self-assembled with nickel-manganese layered double hydroxide (Ni-Mn LDH) via their charge complementarity, forming a uniform heterostructure. L -cysteine (Cys) was further introduced as a surface modifier to construct the N-MLG@Ni-Mn LDH/Cys nanocomposite-based electrochemical sensor. Based on the hard-soft acid-base (HSAB) theory, a synergistic adsorption mechanism involving dual active sites was established, which significantly enhanced the preconcentration efficiency and specific recognition ability toward copper ions. Electrochemical measurements were performed using square-wave anodic stripping voltammetry (SWASV). Electrochemical characterization demonstrated that the sensor possesses excellent conductivity and good electrochemical activity. Under optimized experimental conditions, the sensor exhibited outstanding analytical performance. A good linear relationship was obtained for Cu²⁺ in the concentration range of 0.1–500 ppb, with a low detection limit of 0.24 ppb. In addition, the sensor prepared by this method showed good anti-interference capability, repeatability, and long-term stability, and it also performed well in the detection of artificial sweat samples. Overall, these performance advantages provide a feasible technical strategy for noninvasive monitoring of Cu²⁺ in sweat, with broad application prospects. An electrochemical sensing platform was constructed for the sensitive detection of Cu²⁺ in sweat based on an N-MLG@Ni-Mn LDH/Cys composite-modified screen-printed electrode (SPE). The electrostatic self-assembly between negatively charged N-MLG nanosheets and positively charged Ni-Mn LDH laminates leads to a stable intercalated heterostructure with high conductivity and abundant active sites. Subsequent functionalization with L-cysteine introduces sulfhydryl (-SH) groups, enabling specific chelation toward Cu²⁺ and enhancing selectivity. During detection, Cu²⁺ is effectively preconcentrated via the synergistic interactions of hydroxyl (-OH) and sulfhydryl (-SH) groups, followed by electrochemical reduction to Cu⁰ under a negative potential. The deposited Cu⁰ is then oxidized during the stripping process, generating a characteristic current signal proportional to the Cu²⁺ concentration. Combined with SWASV, this dual-active-site strategy achieves high sensitivity, excellent selectivity, and reliable analytical performance, demonstrating its effectiveness for trace Cu²⁺ detection in sweat. Download: Download high-res image (221KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Weikun Sun,Jiahui Zou,Yufang Liao,Can Li,Jian Zhang,Mohammad Younas,Zumin Qiu
A Zn dosage-mediated thermal reconstruction strategy was proposed to fabricate LDH@ZIF derived catalyst. • Moderate Zn addition achieves uniformly dispersed ZnCo 2 O 4 spinel. • Optimized LZ-0.2 removes levofloxacin rapidly through multiple ROS pathways involving 1 O 2 . • The catalyst realizes stable 144 h continuous degradation in fixed-bed reactor. Peroxymonosulfate-based advanced oxidation processes (PMS-AOPs) are effective for refractory antibiotic removal, yet conventional layered double hydroxide (LDH) catalysts often suffer from lamellar collapse, active site aggregation and poor pore accessibility after calcination. Herein, a series of LDH(Co/Al)@ZIF-8 derived catalysts (LZ-x) were prepared through the growth of ZIF-8 on LDH(Co/Al), followed by pyrolysis, for PMS activation and levofloxacin (LFX) degradation. Regulating the Zn dosage controlled ZIF-8 growth and the subsequent thermal reconstruction of the hybrid precursor. Among them, LZ-0.2 exhibited an open hierarchical architecture and the highest catalytic activity, achieving 95.11% LFX removal within 5 min with a k obs of 0.576 min −1 . In addition, structural characterization indicated that an appropriate Zn dosage favored the formation and dispersion of ZnCo 2 O 4 -containing spinel domains within the porous nanosheet architecture. Meanwhile, mechanistic investigations supported a hybrid radical/non-radical oxidation pathway involving 1 O 2 , •OH, SO 4 •- and • O 2 − . Additionally, the LZ-0.2 + PMS system maintained effective performance in various real water matrices and stable fixed-bed operation for 144 h in hospital wastewater, with low Co and Zn leaching. Moreover, phytotoxicity, antibacterial activity, and zebrafish developmental toxicity were reduced after treatment. This work highlights Zn-dosage regulation as an effective strategy for directing the thermal reconstruction of LDH@MOF derived catalysts for efficient PMS activation and antibiotic abatement.
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APPLIED SURFACE SCIENCE
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2022
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IF 7.392
Junling Wang,Shui Yu,Zhirong Wang,Yan Zhang,Wei Pan
Transition metals carbides/nitrides (MXenes) have been utilized as flame retardants for epoxy resin (EP) with inherently high fire hazard. However, when the dosage of MXenes is low, the corresponding flame retardant efficiency is hard to meet the demand. Up to now, MXenes-based nanostructure with high flame retardation effectiveness has been rarely investigated. Hence, we have employed the assembly strategy to acquire a sandwiched ternary nanostructure (MX-Fe@LDH), based on strongly-coupled magnetic nanospheres@trimetallic LDH hooding with thin MXenes veil, which has never been reported before. With only 3.0 wt% MX-Fe@LDH dosage, the peak heat release rate, peak CO production rate, peak CO 2 production rate, total CO production are reduced by 51.3%, 70.2%, 49.4%, 74.1%. Comparison with reported works also indicates the high effectiveness of MX-Fe@LDH in flame retardation. The curbed emissions of toxic NO and HCN gases are uncovered via Thermogravimetric analysis-infrared spectrometry test. Postmortem analyses have indicated that using MX-Fe@LDH contributes to engender char with high graphitized degree, which acts as safeguard for basal matrix. Stemming from the rational design, there is a strong mechanical interlocking action between MX-Fe@LDH and EP chains, further prompting the mechanical capabilities. This work may motivate the design of MXenes-based nanostructure towards forging fire-safe polymer composites.
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危险品化学品经营许可证（带存储）