Nature Communications
·
2026
·Vol. 17
·期 1
·1699
·
IF 15.7
Sui Huiting,Lou Wenhua,Xiao Shibing,He Jia,Wu Fuling,Liu Ying,Wei Jianbiao,Lu Haijie,Sun Huajun,Ma Xiaoguang,Zhang Shujun
Defect microstructures, particularly dislocations, are pivotal in determining the functional properties of ferroelectric thin films. While their density is routinely considered, the critical role of their spatial configuration has remained largely unexplored and difficult to control. Here, we develop a controlled self-assembly strategy for dislocations in Bi(Fe,Mn)O 3 thin films on Ni-Cr that directly addresses this challenge. By employing a LaNiO 3 buffer layer, we template a discontinuous-columnar grain structure and guide the self-assembly of edge dislocations along grain boundaries in a topologically-protected configuration. The resulting ordered microstructure promotes a more uniform strain field and more coherent FeO 6 octahedral tilting, significantly enhances polarization homogeneity, leading to a lower domain-switching barrier and a more uniform domain pinning effect. Consequently, the BFMO thin film exhibits dramatically superior aging stability after 60 days at 60 °C, exhibiting far smaller reductions in remanent polarization (~20%) and coercive field (~35%) compared to the BFMO thin film grown directly on Ni-Cr. These findings establish a defect engineering paradigm wherein the deliberate dislocation rearrangement is leveraged to unlock superior ferroelectric performance.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
·
IF 9.2
Ting Bian,Jingwen Zhang,Zheng Yang,Feitao Fan,Liuting Zhang,Shitan Yan,Petr Senin,Jie Yu
Designing affordable electrocatalysts that accelerate the oxygen evolution reaction and resist chloride corrosion is key for practical seawater electrolysis. A fan-like Mn–Co 3 O 4 @Mo–Co 3 O 4 core–shell heterostructure was synthesized, where vertically aligned Mn-doped Co 3 O 4 nanowires serve as structural ribs and conformal Mo-doped Co 3 O 4 nanosheets form the fan surface. Dual Mn/Mo doping creates oxygen vacancies and modulates the metal–oxygen electronic structure, boosting intermediate adsorption and OER kinetics, while the nanosheet–nanowire framework maximizes active sites and facilitates charge and mass transport. As a result, the catalyst delivers an overpotential of 220 mV at 50 mA cm −2 in 1 M KOH, outperforming other reference samples. In alkaline seawater, it maintains overpotentials of 252 and 289 mV at 50 and 100 mA cm −2 and exhibits negligible degradation over 120 h with nearly 100% Faradaic efficiency. These results demonstrate that synergistic electronic tuning and nano-architectural design enable robust electrocatalysts for efficient seawater electrolysis.
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RESOURCES CONSERVATION AND RECYCLING
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2026
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IF 10.4
Tianshu Bao,Congcong Li,Chenye Wang,Huiquan Li,Liangbin Li,Zhenhua Sun,Lili Yu,Xinjuan Hou,Aiping Peng,Ming Ye
Global lithium demand has heightened interest in direct extraction from salt-lake brine. Mn-based ion sieves (HMOs) offer high capacity, fast kinetics, and low cost but suffer from Mn dissolution. This study reports a low-dissolution HMO@Hy sieve prepared via hydrothermal carbon coating. The oxygen-rich carbon layer curbs metal leaching without performance loss seen in amorphous carbon coatings, reducing Mn dissolution from 2.01% to 1.06%. The material exists as loose powder with a uniform 2–3 nm coating and adsorbs 21.1 mg/g from real brine within one hour. First-principles calculations show the carbon-doped coating raises surface Mn valence, reducing charge density and limiting dissolution during desorption. Granulation and cycling tests confirm practical potential: one ton of adsorbent processes 114 tons brine weekly, yielding 0.49 tons Li₂CO₃ and ¥42,800 economic benefit. This non-metallic coating strategy enhances HMO stability for sustainable lithium recovery.
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Coatings
·
2026
·Vol. 16
·期 10
·1160
·
IF 3.4
Jiujie Xu,Fugang Lu,Mengchun Fu,Tiesong Lin,Fei Long,Yongkang Dong,Ce Wang,Panpan Lin,Peng He
Mn-based disordered rock-salt (DRX) cathode materials offer high theoretical capacities and operating voltages, rendering them promising candidates for high-energy-density lithium-ion batteries. However, severe interfacial reactions between Mn-based DRX cathodes and the electrolyte can induce surface degradation and a pronounced increase in interfacial impedance. In this study, a LAGP glass ceramic coating layer was introduced onto the surface of Li1.2Cr0.3Ti0.3Mn0.3O1.9F0.1(LCTMOF) particles to minimize direct contact between the active material and the electrolyte, thereby enhancing the capacity retention over 50 cycles. It delivered an initial discharge capacity of 278.7 mAh g−1and retained 227.3 mAh g−1after 50 cycles. Relative to the pristine uncoated cathode, the LAGP glass ceramic coating material achieved a capacity retention of 81.5% together with improved rate performance, retaining a high specific capacity of 184.5 mAh g−1at a current density of 500 mA g−1. Surface XPS analysis, together with the electrochemical results, suggests that the LAGP glass ceramic coating mitigates cathode interfacial degradation under the investigated cycling conditions.
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International Journal of Self-Propagating High-Temperature Synthesis
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2026
·Vol. 35
·期 3
·165-172
·
IF 0.6
Kim S.-J.,Kim R.-J.,Sin C.-N.,Rim T.-S.
ZnO-based pigments doped with Co and Mn ions were synthesized via a self-propagating combustion method using Gingko biloba leaves as a bio-derived fuel. Thermogravimetric analysis confirmed an effective combustion interaction between the metal nitrates and the leaf-derived fuel, validating the combustion synthesis process. X-ray diffraction results revealed the formation of single-phase hexagonal wurtzite ZnO for all samples, with successful incorporation of dopant ions without secondary phase formation. The synthesized powders exhibited porous agglomerated morphologies resulting from gas evolution during the combustion process, while FTIR analysis confirmed the formation of Zn–O bonds and the effective removal of organic species after calcination. Optical characterization demonstrated that transition-metal doping significantly modifies the visible and near-infrared reflectance properties of ZnO pigments, producing green Co-doped and black-brown Mn-doped pigments with relatively high NIR solar reflectance. These results indicate that bio-fuel-assisted combustion synthesis provides a simple and effective route for producing functional ZnO-based pigments with tunable optical properties for potential application in thermally functional coating materials.
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WATER RESEARCH
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2026
·
IF 12.8
Ping Zhang,Chenchen Zhao,Fei Jiang,Chuyang Wu,Tianqi Wang,Xing Xu,Mengjie Wu,Zhanli Chen,Youqin Zou
Green Fenton-like reactions based on monometallic single-atom dual-reaction-center systems have emerged as promising strategies for sustainable water purification owing to their oxidant-free operation and low energy demand. However, their practical deployment is often hindered by limited degradation kinetics and unresolved mechanisms. Here, we report a carbon nitride-supported Fe/Mn bimetallic catalyst composed of Fe nanoclusters and adjacent Mn single atoms (FeMn-CN) that enables ultrafast and self-sustaining pollutant degradation under oxidant-free conditions. The catalyst achieves 99.5% removal of bisphenol A (BPA) within 3 min, setting an ultrahigh rate to date among self-sustaining water purification systems. Combined experimental investigations and density functional theory calculations reveal that the reaction proceeds predominantly via a direct electron-transfer pathway. Fe nanoclusters serve as primary electron acceptors, extracting electrons from BPA without external oxidants, while adjacent Mn single atoms coordinated in Mn-N 4 sites synergistically enhance the electron-accepting capacity of Fe and substantially lower the charge-transfer energy barrier. This atomic-level cooperation endows FeMn-CN with exceptional activity across a broad pH range (pH 2-10), strong tolerance to complex water matrices, high selectivity toward electron-rich contaminants and facile regeneration. Furthermore, continuous-flow reactor tests and life-cycle assessment collectively verify the scalability and superior environmental sustainability of the FeMn-CN process. This work establishes an atomic-level design principle for electron-transfer-dominated self-sustaining remediation materials, advancing the development of next-generation oxidant-free water purification technologies.
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PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
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2026
·
IF 7.9
Fan Pan,Yang Xu,Huan Liu,Yuming Cheng,Jianjun Zhou,Kerun Yang,Yang Zhao,Hongkun Ma,Furong Zhang,Shengkai Cao
Building upon a diagnostic assessment of nitrogen and phosphorus pollution in the Jingzhou Moat, this work developed a novel Fe-Mn oxide composite for the targeted removal of nitrate. An assessment of the water quality revealed a typical pattern of low phosphorus and high nitrogen pollution, with nitrate being the predominant contaminant. A novel Fe-Mn oxide modified activated carbon (FeMnAC) composite with a well-anchored MnFe 2 O 4 spinel structure was synthesized using a controlled activation, impregnation, and calcination procedure. The composite has an increased point of zero charge (pH 9.6), allowing for excellent nitrate adsorption throughout a wide pH range (2∼10). The adsorption process follows the Langmuir monolayer chemisorption model, with a maximum adsorption capacity of 23.19 mg·g −1 . FeMnAC demonstrated exceptional selectivity in the presence of competing anions like PO 4 3– while achieving highly efficient nitrate removal in real moat water samples in 120 min. After four regeneration cycles using NaCl, the adsorbent showed good reusability, retaining more than 50% of its initial capacity. This work offers a transferable methodological framework for nitrogen pollution control in similar heritage urban water systems by combining pollution diagnosis, targeted material design, and practical validation.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2026
·
IF 4.6
Ying Yan,Qianwen Zhang,Yuxin Shu,Zeyu Zuo,Shuoyue Li,Mama Embalo Samba,Wenxuan Xu,Lankun Cai
Photocathodic protection (PCP) provides a sustainable strategy for corrosion control, but conventional TiO 2 /CdS photoanodes remain limited by inefficient interfacial charge transfer and CdS photocorrosion. Herein, TiO 2 /Mn-CdS composite photoanodes were fabricated via anodic oxidation combined with the successive ionic layer adsorption and reaction (SILAR) method for the photocathodic protection of Q235 carbon steel (Q235 CS). The optimized photoanode, prepared using a 0.04 M Mn precursor solution (denoted as TiO 2 /Mn-CdS-0.04), exhibited a photocurrent density of 1590 μA·cm −2 . When coupled with Q235 CS, it induced a cathodic shift of the open-circuit potential to −1.30 V (vs. SCE) under visible-light irradiation. During a 24-day stability test, the photocurrent density remained above 1000 μA·cm −2 and the coupled potential remained approximately −0.95 V (vs. SCE). First-principles calculations indicated that Mn-induced electronic states facilitated carrier separation and interfacial charge transfer, suggesting that Mn incorporation promotes cascade charge transfer within the composite photoanode. This study demonstrates the potential of TiO 2 /Mn-CdS as a non-noble-metal photoanode for durable photocathodic protection of Q235 CS.
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Surfaces and Interfaces
·
2026
·
IF 6
Lihua Fan,Yuhan Niu,Yanru Zhang,Di Wu,Yongning Wu,Guoliang Li
The escalating challenge of bacterial resistance necessitates the development of novel antibacterial agents, positioning the synthesis of nanomaterials as a pivotal strategy for controlling pathogenic bacteria in the food sector. In this study, a novel H₂O₂ self-supplying nanocomposite was developed, comprising Fe/Mn nanoparticles functionalized with cuprous oxide (CuO₂), denoted as Fe/Mn@CuO₂. This composite exhibit tandem peroxidase (POD)-mimetic and glutathione (GSH)-depleting activities, enabling the on-demand generation of hydroxyl radicals via self-produced H₂O₂ and O₂ under acidic conditions (pH 5.5). The synergistic integration of H₂O₂ self-generation, POD-like catalysis, and GSH consumption significantly enhanced reactive oxygen species (ROS) production, leading to efficient eradication of E. coli (99.4%) and Staphylococcus aureus (99.1%) and remarkably antibiofilm efficacy. This multi-mechanistic action induced pronounced morphological alterations and severe membrane disruption in both bacterial strains. Furthermore, Fe/Mn@CuO₂ demonstrated the ability to denature DNA/RNA, disrupt energy metabolism, and achieve potent bacterial inactivation without detectable cytotoxic side effects. This work marked a substantial advancement in overcoming the drawbacks of conventional bactericidal strategy by combining self-sustaining H₂O₂ supply, POD-like activity, and GSH depletion, thereby presenting a highly promising antibacterial platform. Download: Download high-res image (304KB) Download: Download full-size image
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Coatings
·
2026
·Vol. 16
·期 9
·1010
·
IF 3.4
Jibo Miao,Ruizhi Peng,Shu Feng,Xue Liu
With rapid development of 5G/6G communication and high-power electronic devices, electromagnetic interference (EMI) shielding textiles are urgently required to mitigate electromagnetic pollution. Traditional metallic shielding suffered from heavy weight, poor corrosion resistance, and secondary electromagnetic reflection, while continuous basalt fibers (CBFs) exhibit excellent mechanical strength, lightweightness, thermal/chemical resistance, and electrical insulation, which makes CBFs ideal substrates for EMI devices. Herein, a multifunctional waterborne polyurethane (WPU) sizing agent (coating emulsion) integrated with Mn-Zn spinel ferrite was developed for in situ lubrication on the as-spun CBFs. The composite sizing agents consisted of a WPU matrix, water-soluble epoxy, mineral oil lubricant, CTAB surfactant, KH-570 coupling agent, and micro-sized Mn-Zn ferrites. Characterizations including particle size distribution, thermogravimetric analysis, water contact angle (WCA), water absorption, FTIR, XRD, and SEM were conducted to verify uniform anchoring of ferrites on the CBF surfaces. Increasing ferrite dosages induced slight particle aggregation, elevated surface hydrophobicity (WCA = 42.4° → 99.43°), and reduced water absorption (65% → 35%), which greatly improved the moisture resistance of the CBFs. The X-band EMI shielding tests revealed that the total shielding effectiveness (SET) of modified CBF fabrics increased from 0.11 dB (pristine fiber without ferrite) to 58.57 dB at a loading of 8.0 g/L ferrite. The absorption loss (SEA) dominated the shielding performance over reflection loss (SER). The low-to-moderate contents (1.5–3.0 g/L) of ferrite achieved ultra-high absorption, while higher ferrite loading (5.0–8.0 g/L) intensified the impedance mismatch and enhanced surface reflection. This work establishes a scalable fabrication of absorption-prioritized lightweight CBF shielding, which provides a feasible pathway for flexible EMI shielding textiles.
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SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Meiling Lian,Haoquan Wang,Liuxing Chen,Da Chen,Qi Yang,Xuezhi Qiao
Electrochemical sensing devices often suffer from biofouling due to nonspecific adsorption of biomolecules and microorganisms in complex biological matrices. To address this challenge, we developed an efficient antifouling and self-sterilizing sensing interface by grafting polyethylene glycol (PEG) onto two-dimensional Ti 3 C 2 T x MXene nanosheets for the accurate detection of cardiac troponin I (cTnI), a gold-standard biomarker for acute myocardial infarction (AMI). The Mn 2+ -intercalated Ti 3 C 2 T x (Mn-Ti 3 C 2 T x ) exhibited enhanced electrochemical activity in a three-electron oxygen reduction reaction (3e - ORR), enabling in situ self-sterilization by activating molecular oxygen to generate hydroxyl radicals (•OH), which demonstrated potent antibacterial effects against both Gram-negative and Gram-positive bacteria. Density functional theory calculations revealed that Mn doping in MXene significantly reduced the free energy barrier of *OOH intermediate, promoting H 2 O 2 formation and subsequent reduction to •OH. The PEGylated Mn-Ti 3 C 2 (PEG@Mn-Ti 3 C 2 T x ) composite combined the superior hydrophilicity of PEG for effective protein repulsion with the enhanced conductivity of Mn-Ti 3 C 2 T x , enabling sensitive biosensing. Critically, the fabricated biosensor demonstrated high specificity for cTnI against common interferents and achieved reliable detection in spiked serum samples. It exhibited a broad detection range from 0.1 pg mL -1 to 500 ng mL -1 with an ultralow limit of 0.03 pg mL -1 . This work presents a novel strategy for combating biofouling and paves the way for designing robust biosensors capable of accurate and long-term operation in clinically relevant environments, holding great promise for point-of-care diagnostics.
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NEW JOURNAL OF CHEMISTRY
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2025
·
IF 2.5
Yanhua Ma,Jialu Wang,Xiangli Li,Yongfeng Qiao
Epoxidation reactions with hydrogen peroxide serving as the oxidant have a crucial position in the realm of organic chemistry. Here in, the five inorganic-organic hybrid compounds ([Mn(Salen-X)]4[SiW12O40], namely 1 X=H, 2 X=Me, 3 X=tBu, 4 X=Cl, 5 X=Br) were employed as catalysts in the epoxidation of cyclohexene, with hydrogen peroxide serving as the oxidant. Cyclohexene exhibited a conversion of 72.0% and a selectivity of 99.3% toward cyclohexene oxide under mild conditions (20 °C) and in a short reaction time (60 min). The results of UV-vis spectroscopy and electrochemical analyses indicated that the Mn(Salen) moiety acts as the catalytic centre, and the [SiW12O40]4−(SiW12) polyanion promotes electron transfer, thereby guaranteeing the stable catalytic activity of the Mn(Salen) moiety. Thorough characterization studies elucidated the mechanism responsible for the catalytic activity of Mn(Salen) and polyoxometalate-based inorganic-organic hybrid materials. This study provides important theoretical foundations and practical experience for the development of more efficient Mn(Salen)-POM-based catalysts for the green epoxidation of cyclohexene, and offers theoretical basis for the development of efficient and environmentally-friendly olefin epoxidation processes..
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