Journal of Environmental Chemical Engineering
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2026
·Vol. 14
·期 5
·124383
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IF 7.5
Zhengyan Liu,Xiaoli Su,Jie Li,Nan Jiang,Muhammad Imran,Yunxia Chen
A plasma-catalytic system coupled with floating electrode discharge with metal foam-supported catalysts was developed for efficient toluene degradation. The influences of different transition metal oxides (Co, Mn, Ce) loaded onto Fe foam (FF) substrates on the crystal structure, surface morphology and catalytic performance were systematically investigated. Catalysts were symmetrically placed on both sides of the floating electrode. Among the investigated metal oxides, Co was found to form a uniformly distributed CoFe 2 O 4 surface layer on the FF substrate, while Mn and Ce were heterogeneously dispersed as MnO 2 and CeO 2 , respectively. All metal-loaded catalysts enhanced the discharge power of the reactor, attributed to surface charge accumulation on metal oxides. The Co/FF catalyst exhibited the highest toluene degradation efficiency, CO 2 selectivity and O 3 decomposition capability. This plasma-Co/FF system significantly reduced the O 3 concentration from 112 ppm (plasma alone) to 26.2 ppm at a specific input energy (SIE) of 232 J/L. Density functional theory (DFT) calculations suggest that Co sites in CoFe 2 O 4 possess a lower O 3 adsorption energy and higher charge density potential to a higher oxygen vacancy formation tendency, promoting O 3 activation. This study provides an understanding of the mechanistic basis for the rational design of efficient plasma-catalytic systems for toluene removal.
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JOURNAL OF MATERIALS SCIENCE
·
2026
·
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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CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Xianyu Kang,Wenxiu Hu,Qingchun Ge,Shaohua He
The intrinsic hydrophobicity and electronegative surface charge of polyamide (PA) membranes render them highly susceptible to organic and biological fouling, constraining their efficiency in water treatment. Here, we present a molecularly rational, coordination-driven strategy to construct electropositive PA membranes by grafting a family of betaine-derived quaternary ammonium materials (QAMs) (Bet-1N ⊕ , Bet-2N ⊕ , Bet-4N ⊕ ) via Fe 3+ -mediated interfacial coordination. The single-step-synthesized modifiers provide dense −OH, −COOH and −NMe 3 + functionalities that synergistically increase hydrophilicity, smooth surface morphology, and positive surface charge. Forward-osmosis evaluation shows significant flux enhancements of 142%, 150% and 167% for Bet-1N ⊕ , Bet-2N ⊕ , Bet-4N ⊕ membranes, respectively, relative to pristine PA membranes. Beyond permeability, the membranes, particularly the Bet-4N ⊕ variant, achieves >99% bactericidal efficacy against both E. coli and S. aureus , limits lysozyme-induced flux decline to 25% over 12 h, and recovers 88% of initial flux after hydraulic cleaning (vs. 54% decline and 61% recovery for pristine PA). Mechanistic analysis reveals that a sterically and electrostatically selective Fe-QAM interphase underpins these antifouling advantages. This work establishes a facile and eco-friendly approach for constructing high-performance antifouling membranes, offering broad potential for sustainable water treatment applications.
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ANALYTICA CHIMICA ACTA
·
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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JOURNAL OF POWER SOURCES
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2025
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IF 7.9
Ting Zhang,Juan Huang,Yongbin Yang,Chunmei Li,Jianfeng Tang,Qing Li,Hua Lin
The development of bifunctional non-noble metal electrocatalysts with high activity and stability remains a significant challenge. In this work, Fe@Ni aerogels with core-shell structure were synthesized by sol-gel method. The unique network-like architecture and amorphous core-shell structures of Fe@Ni aerogels provide abundant defects and unsaturated sites. Moreover, the tunable surface electronic structure enhances the availability of active catalytic sites, resulting in outstanding catalytic performance for both the oxygen evolution reaction (OER) and methanol oxidation reaction (MOR). For OER, the FeNi 2 aerogel requires only an overpotential of 215 mV to achieve a current density of 10 mA cm −2 , along with a low Tafel slope of 31.7 mV dec −1 and excellent stability. For MOR, its specific and mass activities were as high as 213.6 mA cm −2 and 106.8 A g −1 , respectively. In addition, this study also elucidated the mechanism of the excellent bifunctional catalytic activity of Fe@Ni core-shell aerogels, which provides a new idea for the development of other high-activity non-precious metal electrocatalysts.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Wenxia Zhang,Juan Zhang,Chao Wang,Man Liu,Jie Liu,Lifeng Xiao,Jiangang Chen
Organic acid modification can significantly enhance the performance of iron-based catalysts in Fischer–Tropsch synthesis (FTS) by regulating the quantity and type of functional groups on the catalyst surface. In this study, efficient Fe/ZrO2 catalysts were prepared using impregnation and environmentally friendly solid-state synthesis methods, and the effects of different organic acids on catalytic performance were systematically investigated. The catalysts were rigorously evaluated under industrially relevant FTS conditions, with reaction temperatures set at 270 °C for the impregnation method and 250 °C for the solid-state grinding method under 20 bar and WHSV = 5400 mL/(gcat·h). Comprehensive characterization techniques were employed to reveal the complex relationship between catalytic activity and structural characteristics. We systematically studied the effects of organic acids with different quantities of carboxyl and hydroxyl groups on improving FTS catalytic performance. The results show that citric acid (CA) significantly enhanced the catalytic activity in the CA-Fe/ZrO2 system. At a 6% Fe loading, a CO conversion of 39.89% was achieved at 270 °C, while maintaining a relatively low CH4 selectivity. The hydroxyl and carboxyl groups of CA can form stable complexes with metal ions, which improves the dispersion of iron, enhances the reducibility of iron oxides, promotes the formation of active Hägg iron carbide (χ-Fe5C2), facilitates chain growth, and ultimately boosts the production of valuable C5+ hydrocarbons. These findings highlight the potential of CA in optimizing iron-based FTS catalysts, offering important theoretical insights and practical guidance for future industrial applications.
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ACS Applied Energy Materials
·
2025
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IF 5.5
Wenxiang Sheng,Xiaoxing Zhou,Yuanhang Ma,Irsa Tariq,Dong Xu,Ping Chen,Peng Li
The urea oxidation reaction (UOR) presents a sustainable pathway for energy-saving hydrogen production by replacing the sluggish oxygen evolution reaction (OER) in water electrolysis. However, developing efficient and stable UOR catalysts remains challenging. NiMoO4 has emerged as a highly efficient UOR catalyst due to its synergistic intermetallic interactions and tunable electronic structure. Leveraging heteroatom doping, we engineered an Fe,P-codoped NiMoO4 nanosheet array anchored on nickel foam (Fe,P-NiMnO4/NF) with dandelion-like hierarchical architecture via a facile hydrothermal-phosphorization approach. Systematic characterization demonstrates that Fe doping creates a porous hierarchical structure, facilitating mass transport and exposing abundant active sites, while P doping simultaneously optimizes the electronic configuration and enhancing hydrophilicity, leading to an expanding electrochemical active surface area. The resulting catalyst exhibits exceptional performance, achieving a current density of 100 mA cm–2 at just 1.345 V (vs RHE) for UOR, alongside a low HER overpotential of 270 mV at the same current density. When employed in a two-electrode overall urea splitting (OUS) system, it delivers 100 mA cm–2 at a cell voltage of 1.6 V with outstanding long-term stability of 50 h. This work introduces a design strategy for high-efficiency electrocatalysts in energy-efficient hydrogen production through urea-assisted electrolysis.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
·
IF 8.5
Xingying Xue,Zhiwen Qi,Zhihong Wang,Ran Tao,Hao Zhou,Hongxia Chen,Jiandu Lei,Chengzhang Wang
In this study, magnetic nanocarriers (DU@Fe, D avg = 281.6 nm, zeta potential −28.0 mV) were fabricated using dextran, urushiol as the shell and superparamagnetic iron oxide nanoparticles (SPIONs) as the core. Subsequently, the specific ligand Lys-D-Ala-D-Ala of vancomycin (Van) was grafted onto the surface of DU@Fe, which generated nanoparticles (Lys-D-Ala-D-Ala@DU@Fe) with an average particle size of 385.5 nm and a zeta potential of −16.8 mV via specific and robust interaction. Ultimately, the immobilization capacity of Van reached up to 294.1 mg·g −1 for efficient antibacterial properties. Moreover, the assembly process adhered to the pseudo-second-order kinetics model ( R 2 = 0.998–0.999) and the Langmuir adsorption isotherm model ( R 2 = 0.999, 30 °C). Notably, V@DU@Fe effectively adhered to the cell envelopes of both Gram-negative and Gram-positive bacteria, achieving rapid bactericidal effects within 1 h. Furthermore, it maintained over 85.0 % of its initial antibacterial efficiency against S. aureus and S. epidermidis even after six recycles. Therefore, this study provides strategies and methods for the development of urushiol-dextran intelligent SPIONs nanomedicines.
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NEW JOURNAL OF CHEMISTRY
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2025
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IF 2.5
Hanyu Yao,Ruixuan Ji,Xiaoyi Song,Bin Yang,Yin Lv,Zhong Wei
Ferroptosis, a recently recognized form of non-classical programmed cell death (PCD), leads to impaired cellular structure and integrity due to the accumulation of lipid peroxidation products (LPO). However, single treatment ferroptosis often fails to achieve optimal tumor treatment outcome. Therefore, we constructed a multi-synergistic treatment strategy based on ferroptosis, that is more conducive to tumor therapy. In this study, we constructed a metal organic framework (MOF) loaded with glucose oxidase (GOx) and doxorubicin (DOX), denoted as Fe(Ⅲ)-RSSR@DOX@PEG-GOx. Fe(Ⅲ)-RSSR@DOX@PEG-GOx was synthesized through coordination between Fe3+ and disulfide-containing ligands scavenged GSH and downregulate glutathione peroxidase 4 (GPX4), thereby triggering ferroptosis. The GOx catalyzes glucose into abundant H2O2, promoting the Fenton reaction which results in excessive ROS formation within tumors. The accumulation of ROS can further enhance the process of ferroptosis, while the massive consumption of glucose constitutes a synergistic situation of “starvation treatment”. The smart biomimetic nanoplatform integrates ferroptosis, chemotherapy, and starvation therapy, providing a potential anti-tumor strategy to achieving multi-effect synergistic tumor treatment.
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FOOD CHEMISTRY
·
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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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Tao Xia,Jianxia Wang,Junfeng Chen,Xuede Li,Hong Liu,Jie Li
The efficient removal of emerging organic pollutants from water poses a significant challenge in the field of water treatment. In this study, we proposed that introducing dual metallic sites into an iron-based metal-organic framework (MOF) could synergistically enhance both adsorption capacity and photocatalytic activity. To test this hypothesis, we successfully incorporated cerium into MIL-101(Fe) via a simple one-pot hydrothermal method, synthesizing a series of Ce/Fe bimetallic MOFs. Systematic characterization results revealed that Ce doping effectively modulated the material's electronic structure, markedly enhancing visible light absorption by narrowing the bandgap from 2.81 to 2.75 eV and promoting photogenerated charge separation. The 0.1Ce/Fe-1 composite demonstrated superior chloramphenicol (CTC) adsorption, with a saturated capacity of 1551 μmol/g and rapid equilibrium attainment within 60 min. This material attained a 98.2% removal efficiency for 10 mg/L CTC within 1 h under visible light, the corresponding apparent rate constant (0.0107 min −1 ) was 26.75 times that of pristine material. Trapping experiments confirmed that •OH and •O₂⁻ radicals were the predominant active species responsible for the photocatalytic degradation. This material maintained high efficiency and stability across wide pH range, exhibited good resistance to humic acids and common ions, and demonstrated excellent removal capacity (>89.3%) and cycling stability (94.0% efficiency retained after five cycles) in actual water samples. This work demonstrates the efficacy of dual-metal-site regulation as a viable strategy to concurrently enhance both the adsorptive and photocatalytic functionalities of MOF-based materials, offering a novel pathway for developing highly efficient and stable functional materials for water treatment.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Wenting Si,Chengyu Huangfu,Xinmiao Xia,Bofei Li,Xianghai Guo
Efficient lithium extraction from aqueous media remains challenging due to the intrinsically low concentration of Li + and severe competition from coexisting ions, which places stringent requirements on the coordination environment and topology of adsorption sites in adsorbents. In this context, fluoride-mediated crystal phase engineering offers an effective route to regulate metal cluster assembly in metal–organic frameworks (MOFs). Here, this research demonstrates that fluoride incorporation regulates the phase evolution of Fe-based MOFs, promoting the formation of chain-structured TJU-21 from MIL-100(Fe)-type frameworks under appropriate synthesis conditions. This phase evolution led to significant reconstruction of the iron coordination environment, thereby increasing surface electronegativity and the density of accessible Fe F active sites. The TJU-21 exhibits a lithium adsorption capacity of 44.6 mg·g −1 , representing a 45.7% improvement compared with MIL-100(Fe). Mechanistic analysis indicates that inorganic chain-based nodes intrinsically favor Li + binding, while fluorine coordination contributes to the stabilization of open metal sites and enhanced host guest interactions. This work demonstrates that fluoride-mediated phase engineering is a promising strategy for regulating metal cluster topology and functionality in Fe-based MOFs, with potential implications for lithium extraction.
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