JOURNAL OF MATERIALS SCIENCE
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2026
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IF 4.4
Xu Yihua,Huang Linghai,Hu Dinggen,Ke Yu,Li Hongyan,Yang Jun,Fu Bingqing,Zhao Huifang,Sha Lizheng,Sun Minnan,Yuan Tianzhong
To develop biomass‑derived magnetic conductive carbon aerogels toward energy storage and electromagnetic shielding applications, magnetic conductive carbon aerogels were rationally fabricated using chitosan (CS) and sodium carboxymethyl cellulose (CMC) as raw biomass precursors via Fe 3+ coordination cross-linking, directional freeze-drying and high-temperature carbonization strategies. The effects of precursor ratio on the microscopic morphology and electrical conductivity of as-prepared aerogels were systematically explored. The results indicated that the optimized CS/CMC-50%-C aerogel possessed a large specific surface area of 458.9 m 2 ·g −1 , well-developed hierarchical porous architecture and superior graphitization degree. During high-temperature pyrolysis, in situ generated Fe 3 O 4 nanocrystals together with formed Fe–C bonds successfully endowed the aerogel with favorable magnetic behavior and simultaneously reinforced the interconnection of internal conductive networks. Benefiting from the above structural and compositional merits, the resultant aerogel achieved low resistivity of 0.454 Ω·cm and maintained stable electrical conductivity and integral structural integrity after ten consecutive charge–discharge cycles. This work provided a promising route to prepare lightweight magnetic conductive biomass aerogels. Graphical abstract High-porosity precursor aerogels were prepared from Fe 3+ cross-linked biomass via directional freezing, and the subsequent carbonization yielded magnetic carbon aerogels with 3D porous structure and excellent electrical conductivity stability.
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ELECTROCHIMICA ACTA
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2026
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IF 5.8
Junke Cai,Xujing Zhang,Xinmei Li,Jiahao Ma,Lirong Wei,Yutong Chen
Electrodeposition enabled a Fe-coordinated gradient hydrogel electrolyte. • Fe migration regulated the spatial distribution of coordination crosslinks. • Amide-related covalent linkages and Fe–O coordination formed a dual network. • The gradient dual network balanced mechanical stability and ion transport. • The AC//AC device retained 90.67% capacitance after 10,000 cycles. Hydrogel electrolytes for quasi-solid-state carbon-based supercapacitors need to balance structural stability, ion transport, and electrode/electrolyte interfacial compatibility, which often constrain each other. Here, we developed a carboxymethyl chitosan (CMCS)–sodium l -aspartate (AspNa)–Fe gradient dual-network hydrogel electrolyte through an electric-field-induced electrodeposition strategy. In this system, CMCS/AspNa formed a hydrophilic polymer framework; 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (EDC·HCl, hereafter abbreviated as EDC) promoted the formation of amide-related covalent linkages, providing stable skeletal support; and Fe–O coordination was introduced through the in situ release of Fe species from a sacrificial Fe anode. During electrodeposition, electric-field-driven migration coupled with concentration diffusion produced a non-uniform Fe distribution, leading to a spatially heterogeneous coordination/covalent dual network within the hydrogel. FTIR, XPS, and SEM/EDS analyses revealed amide-related covalent linkages, Fe–O coordination, and a gradient Fe distribution, supporting the formation of the gradient dual-network structure. Among the samples with different EDC contents, the hydrogel prepared with 2.0% (w/v) EDC showed a suitable balance between compressive stability and ion transport. The AC//AC symmetric supercapacitor assembled with this hydrogel electrolyte delivered a device-level specific capacitance of 22.81 F g⁻¹ at 0.5 A g⁻¹ and retained over 90% of its initial capacitance after 10,000 cycles at 1 A g⁻¹, with a Coulombic efficiency close to 100%. These results highlight the role of the electrodeposition-induced gradient coordination/covalent network in coupling mechanical support, ion transport, and interfacial stability in quasi-solid-state carbon-based supercapacitors. Download: Download high-res image (150KB) Download: Download full-size image
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JOURNAL OF MEDICINAL CHEMISTRY
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2026
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IF 7.3
Yang Liuxin,Cheng Yiyu,Qin Si,Jiang Jun,Zhong Shiyi,Bi Xinyue,Xu Jiali,Wang Kai,Qiu Shuang,Li Xiang
Cellular resilience to therapy often arises from adaptive
mechanisms
that safeguard iron–sulfur (Fe–S) proteins. Here, we
present a rational strategy to overcome such resilience by integrating
two synergistic vulnerabilities, copper toxicity and Fe–S cluster
homeostasis, into a single molecular scaffold. Inspired by a bacterial
sulfur mobilization (SUF) inhibitor, we hybridized its core structure
with a copper-transporting 8-hydroxyquinoline moiety to generate HDQ , HDQ-S , HDQ-Ph , and HDQ-Me . They coordinate copper via hydroxyquinoline and efficiently transport
copper into cancer cells, with HDQ-Me achieving an efficacy
comparable to that of the clinical copper ionophore elesclomol ( ES ). Strikingly, HDQ alone suppresses Fe–S
proteins across multiple functions, including respiration, iron homeostasis,
and DNA replication. HDQ -mediated copper loading triggers
cuproptosis hallmarks, DNA damage, and ATP collapse, generating a
synergistic lethality. This work establishes HDQs as
bifunctional tools that cotarget copper and Fe–S protein homeostasis,
validating a convergent therapeutic strategy against resilient cells.
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ACS Sustainable Chemistry & Engineering
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2026
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IF 7.6
Pengxiang Zhang,Yumeng Wu,Shuling Liu,Xiaofeng Zhang,Xianji Guo,Xianli Wu,Yanyan Liu,Baojun Li
Rational design of heteronuclear dual‑atom catalysts with strong electronic coupling and spatial complementarity for highly selective 4e– oxygen reduction reaction (ORR) remains a significant challenge in electrocatalysis. Herein, a catalyst, Fe–Bi diatomic structures anchored in a cellulose-derived activated carbon matrix (FeBiDA@CC), was obtained for ORR, in which the Fe and Bi atoms exerted a synergistic effect through strong electronic coupling. Bi modulates Fe's spin and electronic structure, while Fe promotes Bi electron polarization and activation of outer shell electrons. The Fe–Bi spatial distance in the dual metal sites geometrically matches O2 bond length, optimizing modes of adsorption and activation to facilitate the preferred 4e– ORR pathway and improve catalytic stability. FeBiDA@CC exhibits a half-wave potential of 0.93 V, an electron transfer number of 3.92–4.00, and a current loss of only 7.2% after 100 h for ORR. Liquid and flexible zinc-air batteries based on FeBiDA@CC as a cathode catalyst demonstrate outstanding peak power densities of 200.5 and 96.6 mW cm–2, respectively, alongside excellent long-term cycling stabilities of 10,800 and 438 cycles, respectively. This work offers a novel perspective for electronic structural regulation and design of p-block element-based catalysts, opening new possibilities for the design of catalysts in the energy storage field.
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Materials Today Chemistry
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2026
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IF 7.4
Rui Huang,Shaohua Luo,Qi Sun,Lixiong Qian,Shengxue Yan
Although lithium-ion batteries (LIBs) offer high energy density and long cycle life, their large-scale application is hindered by the scarcity and high cost of lithium resources. sodium-ion batteries (SIBs) have emerged as a promising alternative for large-scale energy storage due to the abundance and low cost of sodium. However, the development of high-performance SIBs is impeded by structural instability in cathode materials, primarily caused by the relatively large ionic radius of Na + , which induces lattice strain and phase transitions during cycling. In this work, a Fe/Ti co-doped tunnel-type sodium manganese oxide cathode material, Na 0.55 Mn 0.9 Fe 0.05 Ti 0.05 O 2 (NaMO55-FT5), was successfully synthesized via a high-temperature solid-state method. The structural evolution and electrochemical behavior of the material were systematically investigated. It was found that synergistic Fe/Ti doping effectively expanded Na + interlayer spacing, mitigated Jahn-Teller distortion through Mn 3+ stabilization, and disrupted Na + /vacancy ordering, thereby enhancing both Na content and structural integrity. As a result, the NaMO55-FT5 material delivered an initial discharge capacity of 98.5 mAh g −1 at 0.5C, retains 72.0% of its capacity after 300 cycles, and maintained a reversible capacity of 55.2 mAh g −1 at a high rate of 5C, demonstrating outstanding cycling stability and superior rate capability. This study presented a rational design strategy based on dual-metal co-doping for developing high-sodium-content, structurally robust tunnel-type cathode materials, offering valuable insights for advancing the practical deployment of SIBs in grid-scale energy storage applications.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Huan Yan,Zhichao Liu,Qinlan Luo,Yangqiang Huang,Xiao Luo,Hao Chen
Because redox reactions involve electron transfer, modulating the electronic properties of catalysts can facilitate electron exchange between reactants and the catalyst surface, improving catalytic performance, especially for oxygen activation-based Fenton-like reaction. In this study, a series of boron nitride (BN) materials with varying nitrogen defect ratios were synthesized to modulate the electron distribution and transfer between the BN support and the Fe 2 O 3 anchored at defect sites. Combined characterizations of X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR), electrochemical impedance spectroscopy (EIS), and X-ray absorption fine structure spectroscopy (XAFS), we confirm that the interfacial electronic properties between Fe 2 O 3 and the support defects in Fe/BN-1 endow the Fe 2 O 3 with a relatively high local electron density. Specifically, the defect-rich BN-1 support donates electrons to the loaded Fe 2 O 3 , significantly enhancing the electron cloud density of the Fe active centers. Density functional theory (DFT) calculation further indicates that the Fe sites induced by N defects in h-BN are in an electron-rich state. This unique electronic structure facilitates electron transfer from the Fe sites to H 2 O 2 , thereby effectively promoting the subsequent activation of H 2 O 2 . As a result, Fe/BN-1 achieves an optimal Fenton-like catalytic activity for 96% tetracycline (TC) removal within 30 min, owing to its superior defect ratio and stronger interfacial interaction with Fe 2 O 3 . This work provides a foundation for the use of tunable defects in 2D materials to modulate the electronic properties of the metal supported on them for improved industrial redox reactions.
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FOOD CHEMISTRY
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2026
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IF 10.4
Jiajie Xu,Yuhang Huang,Jiayu Xu,Siyu Hu,Xiangyang Tan,Liangchong Yu,Taolei Sun,Guanbin Gao
Glucose oxidase (GOx) is unstable under temperature/pH variations, limiting its biosensing applications. Existing nanozyme-based glucose sensors suffer from narrow detection ranges (0.2–12.0 mM) and poor stability. Herin a Janus-structured GOx-Fe/Cu nanozyme was synthesized via one-pot self-assembly with Fe₁₋ₓS and GOx partially-covered on Cu₃(PO₄)₂ nanoflowers. This nanozyme achieved an ultra-broad glucose detection range (0.5–20 mM, LOD = 34.18 μM), 40 times wider than existing nanozyme, with enhanced stability (>80% activity after 7 h at pH 3 and 5 h at 60 °C) and high specificity. When integrated into a chitosan/agarose hydrogel, it enabled visual glucose quantification through smartphone-based portable detection. In milk samples, it showed reliable glucose and H₂O₂ detection with recovery rates of 95–121% and relative standard deviations (RSD) of 0.31%–8.26%, demonstrating practical applicability. This Janus-structured GOx-Fe/Cu nanozyme improves GOx stability and sensing performance, and the hydrogel platform enables portable detection of glucose and hydrogen peroxide in food chemistry.
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PubMed
高影响因子
ANALYTICA CHIMICA ACTA
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2026
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IF 6.1
Yizeng Mu,Xixian Zhu,Xuebo Liu,Linxiu Dai
Phenolic pollutants, originating from petrochemical production, dyeing and domestic wastewater, are among the most persistent and toxic organic contaminants in aquatic systems. Their structural diversity and similar physicochemical properties often lead to overlapping signals in traditional detection methods, hindering accurate identification and quantification in real-world samples. Conventional spectroscopic, electrochemical, and colorimetric techniques offer fast response and high sensitivity but often struggle to distinguish structurally similar phenolics in complex mixtures. Therefore, developing sensing strategies that generate rich feature information and enable multidimensional recognition have become increasingly essential. Herein, we developed a fingerprinting sensing strategy based on an ultralow-loading Fe–Mo double-atomic site catalyst (DAC) coupled with H 2 O 2 and TMB. Compared with isolated Fe or Mo single-atomic sites, the Fe–Mo DAC exhibited markedly enhanced peroxidase-like activity, which is attributed to Mo-induced modulation of the electronic structure and oxidation state of Fe centers. This catalytic synergy enables broad detection ranges, high sensitivity, and ultralow limits of detection (LOD, 0.76 μM) for five representative phenolic compounds and their binary mixtures. Experimental and theoretical investigations reveal that the variation in LOD is governed by the phenols’ intrinsic oxidation energy barriers and reducing abilities. By integrating multiple linear and nonlinear spectral descriptors into a four-dimensional feature matrix, followed by PCA and LDA, the system achieved accurate high-dimensional discrimination of phenolic species. This work offers a rapid, sensitive, and robust method for identifying phenolic pollutants, enabling mixture discrimination, source tracing, and environmental monitoring. The approach also provides a generalizable framework for expanding nanozyme-based sensing toward complex chemical mixtures.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Yawen Cai,Xishi Tai,Baowei Hu,Xiangke Wang
The efficient extraction of uranium (U) from aqueous solutions is of great significance for ensuring global energy security and advancing environmental remediation. In this work, a novel Fe 3+ -doped Aurivillius-type ferroelectric material (Fe-BBT-0.15) was developed for enhanced piezo-catalytic U(VI) extraction. The incorporation of Fe 3+ was systematically optimized to improve its intrinsic piezoelectric responsiveness and piezo-catalytic activity. The Fe-BBT-0.15 demonstrated outstanding catalytic performance. Over 85% of 50 mg/L U(VI) was removed after 180 min of the ultrasonication stimulation across a broad pH range of 3.5–8.5. The piezo-catalytic system exhibited strong tolerance to temperature fluctuations, complex background electrolytes, and various competing ions. The reaction pathway was elucidated by integrating the identification of key reactive radicals with in-situ monitoring of H 2 O 2 accumulation. The H 2 O 2 production, co-driven by O 2 reduction and H 2 O oxidation/sonolysis, was attributed to the synergistic interplay of piezoelectric effect and cavitation effect. Combined with the XPS analysis, it was confirmed that the Fe-BBT-0.15 served as a stable “reaction center” and “charge pump”, which were capable of supporting the migration and utilization of charge carriers and reactive free radicals. Furthermore, XRD analysis revealed that U(VI) was immobilized in the form of metastudtite ((UO 2 )O 2 ·2H 2 O), a finding that directly linked the catalytically generated H 2 O 2 to effective uranium solidification. This study provides a high-performance adaptive piezo-catalyst and elucidates the underlying catalytic mechanism, thus, contributing to the advancement of sustainable uranium extraction.
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KOREAN JOURNAL OF CHEMICAL ENGINEERING
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2026
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IF 3.4
Jiang Pengfei,Hao Yifan,Jia Mingxi,Liu Cun
Hydrogen peroxide (H 2 O 2 ) is a key reactive oxygen species involved in physiological regulation and pathological processes, and its accurate quantification is essential for bioanalysis and disease-related studies. Herein, we report the synthesis of a series of Cu-Fe oxide nanozymes via a simple antisolvent crystallization strategy and systematically investigate their peroxidase-like catalytic activity toward colorimetric H 2 O 2 detection. By tuning the Cu/Fe molar ratio, the catalytic activity of the nanozymes can be effectively regulated, with Cu 2 FeO x exhibiting the highest peroxidase-like activity toward 3,3′,5,5′-tetramethylbenzidine (TMB) oxidation in the presence of H 2 O 2 under acidic conditions and enabling sensitive colorimetric detection of H 2 O 2 over a linear range of 10–200 µM with a detection limit of 0.572 µM. Furthermore, the proposed sensing platform demonstrates satisfactory selectivity and reproducibility, and is successfully applied to the determination of H 2 O 2 released into cell culture supernatants after chemical stimulation. This work highlights the potential of composition‑regulated Cu-Fe oxide nanozymes as robust artificial enzymes for colorimetric H 2 O 2 sensing and provides insights into their application in bioanalytical systems.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Hongwei Ren,Junming Zhang,Aiqing Hao,Caixia Ding,Tianjun Hu,Ergui Luo,He Xiao,Man Zhao,Jianfeng Jia,Haishun Wu
Electrochemical seawater splitting is typically hindered by the corrosive effect of chloride ions (Cl⁻) on catalytic active sites during the oxygen evolution reaction (OER). Herein, a self-protecting Fe@NiAl electrocatalyst mediated by aluminate ions (Al(OH) 4 ⁻) was synthesized via a novel in-situ etching-oxidation strategy, which acts as an efficient and durable OER catalyst in alkaline seawater electrolyte. Comprehensive characterization techniques reveal that the incorporation of FeOOH and generation of oxygen vacancies (O vac ) modulate the chemical composition and electronic structure of Fe@NiAl, thereby promoting a γ-NiOOH/γ-FeOOH synergistic effect to enhance the OER activity. Of particular importance, the in-situ-generated Al(OH) 4 ⁻ within the Fe@NiAl catalyst exert a strong repulsive effect toward Cl⁻ in seawater, thereby significantly enhancing the catalyst’s corrosion resistance. Density functional theory (DFT) calculations demonstrate that FeOOH incorporation lowers the energy barrier for the formation of OER active intermediates, while Al(OH) 4 ⁻ generation reduces the Cl⁻ adsorption energy. A flow-type anion exchange membrane (AEM) electrolyzer utilizing Fe@NiAl as the bifunctional electrode achieves a cell voltage of merely 2.31 V at 1.0 A cm⁻ 2 and sustains stable operation for 800 h in alkaline seawater. This work provides valuable insights and a feasible strategy for designing robust and corrosion-resistant electrocatalysts for industrial-scale seawater electrolysis applications.
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CHINESE JOURNAL OF CATALYSIS
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2026
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IF 17.2
Xin Liu,Yezhou Yang,Jingru Yang,Maodi Wang,Qihua Yang
The selective hydrogenation of furfural (FAL) to furfuryl alcohol (FOL) over Ni catalysts offers a sustainable route for biomass valorization. However, the conventional Ni catalysts suffer from poor selectivity in FAL hydrogenation. Herein, we report that the moderate Fe doping in Ni/TiO 2 significantly enhances selectivity without compromising catalytic activity for the selective hydrogenation of FAL to FOL. Notably, Ni/Fe-TiO 2 catalyst with Fe content ≥ 4.9 wt% maintained > 90% selectivity toward FOL at nearly 100% conversion, whereas Ni/TiO 2 achieved only 38% under the identical condition. Combined experimental and theoretical studies revealed that the enhanced catalytic performance of Ni/Fe-TiO 2 originates from the dilution of contiguous Ni sites by Fe, which suppresses the further hydrogenation of FOL. Moreover, Fe sites exhibited a stronger affinity for carbonyl groups compared to Ni(0), indicating complementary role where Ni(0) primarily facilitates H 2 dissociation, while Fe sites play a critical role in carbonyl activation. These findings underscore the superior synergistic effect of bimetallic systems in promoting selective functional group transformation.
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