JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Yaping Zhang,Yanan Zhao,Yixin Qi,Yanyan Lin,Yuhang Cheng,Mengmeng Sun,Lei Wang
Photogenerated holes have emerged as critical mediators for activating peroxymonosulfate (PMS) in the coupled photocatalytic PMS activation system, enabling novel dual-channel activation pathway. A tandem system based on Fe-MOF@BiVO 4 (Vis/PMS/Fe-MOF@BVO) with spatially separated active sites was constructed to form a dual-channel activation mechanism. The BiVO 4 (010) face provides the active sites for photogenerated electrons to drive the Fe 3+ /Fe 2+ cycle and activate PMS, while the BiVO 4 (110) face serves as the active sites for photogenerated holes to activate PMS. Consequently, the Vis/PMS/Fe-MOF@BVO system achieved complete degradation of 10 mg/L BPA within 6 min, with a degradation rate constant (K obs ) of 0.74 min −1 . It also demonstrated high removal efficiency for various organic pollutants with excellent immunity to interference and reusability. This work provides a new insight into the coordinative mechanism for coupled photocatalysis and PMS activation system.
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高影响因子
Catalysts
·
2025
·Vol. 15
·期 11
·1032
·
IF 4
Jingmo Zhou,Chaoyue Liu,Wenke Zhao,Faizan Ahmad,Yaning Zhang
This study pioneers the application of metal-doped Fe-Al as multifunctional redox catalysts for tunable syngas production from plastics via a microwave-assisted process (CLG). We rationally designed a series of redox catalysts (Ni, Ca, Ce, Sr, Co) to unlock efficient H2-rich syngas production from (high-density polyethylene) HDPE. A class of metal-doping (Ni, Ca, Ce, Sr, and Co) Fe-Al redox catalysts was engineered, with Ni-doped Fe-Al (Ni-Fe-Al) exhibiting the excellent H2-rich syngas production (75.32 mmol/gHDPE syngas, 47.09 mmol/gHDPE H2). This is attributed to the improved redox activity, which facilitates efficient lattice oxygen transfer and catalytic reforming reactions, alongside improved microwave absorption and a porous structure that promotes reactant access. This strategic material design, coupled with process parameter optimization (800 W, redox catalyst/plastic = 2.0), developed a highly efficient HDPE-to-syngas conversion system. The process produced a high-quality syngas (90.03% H2+ CO, H2/CO ratio = 2.27) with a rapid heating rate (233.0 °C/min) and minimal energy input (3.52 kWh/molgas). This work provides not just an effective upcycling route for plastics, but a fundamental blueprint for designing advanced redox catalysts to unlock the full potential of microwave-CLG.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·
IF 6.2
Xiang Wang,Haoran Wang,Min Li,Qingtao Guo,Ben Ge,Xingyu Xiong,Zhibin Yang
This work focuses on the development of high-performance La 0.1 Sr 1.9 TiFeO 6-δ (LSTF)-based fuel electrode materials through targeted Co substitution at the Ti site and Fe site. By selectively substituting Ti or Fe with Co element, lattice contraction and change of the Fe 3 ⁺/Fe 4 ⁺ ratio in LSTF double perovskite are achieved. La 0.1 Sr 1.9 Ti 0.8 Co 0.2 FeO 6-δ (LSTCF) material obtains higher oxygen vacancy concentration and better CO 2 adsorption capacity. Electrochemical impedance spectroscopy (EIS) test demonstrates that the La 0.1 Sr 1.9 TiFe 0.8 Co 0.2 O 6-δ (LSTFC) electrode exhibits superior performance in gas transport process, while the LSTCF electrode demonstrates significant advantages in oxygen ion conductivity and dissociative adsorption of CO 2 species. The single cell with the LSTCF electrode exhibits superior electrolysis performance, achieving a current density of 1.07 A·cm −2 at 800 °C and 1.8 V for CO 2 electrolysis. This work provides a novel pathway for the development of catalysts for solid oxide electrolysis cell (SOEC) fuel electrodes.
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CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yaqian Dong,Zhi Fang,Deliu Ou,Qing Shi,Yu Ma,Weiyou Yang,Bin Tang,Qiao Liu
Constructing inexpensive, efficient, and stable pH-universal oxygen reduction electrocatalysts with controlled distribution of active species is of great importance for the exploration of green energy conversion devices. Herein, we demonstrated the rational preparation of S-modified Fe–N–C nanosheet catalysts with hierarchical porous architecture, large specific surface area (up to 1471 m 2 g −1 ) and controlled S doping (up to 12.3 at.%) by the co-pyrolysis of cysteine, FeCl 3 with Zn-mediated MgO template. Merited from rich and accessible active sites, the catalysts display outstanding oxygen reduction reaction (ORR) activity in terms of very small E j3 (potential@3 mA cm −2 , 0.87 V in 0.1 M KOH, 0.66 V in 0.1 M PBS (pH7.4) and 0.64 V in 0.5 M H 2 SO 4 ) and overwhelming diffusion-limited current density (9.8, 6.1, 10.3 mA cm −2 in alkaline, neutral, acidic media, respectively), along with extremely respectable stability (∼90% activity retention for 53200, 26728, 43200 s in alkaline, neutral, acidic media, respectively), which underscore comparable or even better overall performance than commercial Pt/C and advanced pH-universal ORR catalysts ever reported. The as-assembled primary alkaline zinc–air battery delivers considerately large peak power density of 205 mW cm −2 and energy density up to 990.6 Wh kg Zn −1 at 10 mA cm −2 (115 mW cm −2 and 676.7 Wh kg Zn −1 for Pt/C-based battery), implying its highly promising application in practical energy conversion devices.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
·
IF 9
Xianyun Ma,Bowen Zhu,Zuopeng Li,Min Wang,Chang-qing Miao,Yajia Liu,Sanbing Zhang
Defect engineering is a promising approach for constructing highly efficient catalytic activity based on metal–organic frameworks (MOFs). In this study, a defective MOFs, referred to as quasi-MIL-100(Fe), was synthesized by moderate synthesis method and then careful thermal treatment at an atmosphere ranging from 150 to 450 °C, linking crystalline materials and the associated metal oxides. MIL-100(Fe) heat-treated at 250 °C (referred to as M-250) partially breaks coordination bonds, resulting in a crystalline-to-amorphous transformation, increased porosity, and elimination of ligands. Compared to pristine MIL-100(Fe), M-250 possessed more reactive sites and exhibited the highest photo-Fenton degradation of ciprofloxacin with 95.6 % removal efficiency in 90 min, despite the unfavorable photo properties for photo-Fenton performance due to the destruction of the crystal structure. Additionally, density functional theory (DFT) calculations, combined with free radical quenching and mass spectrometry analysis, elucidated the catalytic mechanism. These findings highlight the significant potential of quasi-MOFs for applications in the photo-Fenton reaction.
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ACS Nano
·
2025
·
IF 16
Penghao Dai,Jian Lang,Weiyuan Huang,Lu Ma,Xueru Zhao,Xiaojing Lin,Qiang Li,Hongpeng Li,Tongchao Liu,Khalil Amine,Hongsen Li
Aqueous zinc–sulfur battery has garnered significant attention as a high-energy, low-cost, and safe energy storage system. However, the multielectron transfer kinetics of sulfur cathodes are relatively slow, presenting challenges such as limited sulfur utilization and lower discharge voltage, which significantly hinder their practical applications. In this study, we explored a comprehensive design approach for high-performance, long-cycle aqueous zinc–sulfur batteries. The simultaneous introduction of ZnI2 and Fe single atoms (Fe-SAs) as catalytically active agents decouples the redox reactions, effectively facilitating ZnS oxidation and S reduction separately. The application of an external magnetic field regulates the spin state of Fe-SAs, further enhancing their catalytic activity and electron transfer capability. Electrochemical tests demonstrate that the S@Fe-NC HS/ZnI2 cathode assembled under a magnetic field exhibits excellent rate performance, achieving an impressive specific capacity of 1399 mAh g–1 at a high current density of 5 A g–1 and good cycling stability over 300 cycles, representing the highest reported high-current discharge capacity to date. This study provides a comprehensive design framework for optimizing zinc–sulfur (Zn–S) battery performance and elucidates the influence of magnetic field-induced spin state modulation on catalytic behavior.
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Materials
·
2024
·
IF 3.1
Xiaofei Hao,Ran Wang,Xiumin Tan,Xiufeng Zhang,Xupo Liu,Zhaoyang Wu,Dongli Yuan
Fabricating efficient oxygen evolution reaction (OER) electrocatalysts is crucial for water electrocatalysis. Herein, the spinel-type high-entropy oxides of (Co, Fe, Mn, Ni, Cr) 3 O 4 were synthesized through the high-temperature calcination approach. The influences of calcination temperatures on structures and electrochemical properties were investigated. The optimized catalyst of HEO-900 contains the hybrid structure of regular polyhedrons and irregular nanoparticles, which is beneficial for the exposure of electrochemically active sites. It was identified that the abundant high-valence metal species of Ni 3+ , Co 3+ , Fe 3+ , Mn 4+ , and Cr 3+ are formed during the OER process, which is generally regarded as the electrochemically active sites for OER. Because of the synergistic effect of multi-metal active sites, the optimized HEO-900 catalyst indicates excellent OER activity, which needs the overpotential of 366 mV to reach the current density of 10 mA cm −2 . Moreover, HEO-900 reveals the prominent durability of running for 24 h at the current density of 10 mA cm −2 without clear delay. Therefore, this work supplies a promising route for preparing high-performance multi-metal OER electrocatalysts for water electrocatalysis application.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Li Yin,Baixue Xing,Ziyuan Liu,Lihua Lu
Herein, a novel ternary-atomic Fe/Zn/Ir nanozyme (Fe/Zn/Ir TAzyme) with peroxidase (POD)-like and luminescence properties is fabricated through coordinating Ir(III) complex into the as-prepared Fe/ZIF-8. The preparation procedures avoid high-temperature and pyrolysis which endue Fe/Zn/Ir nanocomposite with high stability and can be scaled up. Once Fe/Zn/Ir TAzyme catalyzes the substrate TMB to produce blue oxidized TMB (oxTMB), its luminescence is quenched by the generated oxTMB. Ascribed to its high POD-like activity and interesting luminescence property, a dual-mode sensing platform for the detection of melatonin (MT) is fabricated. In the presence of increasing concentrations of MT, the absorbance of the detection system declines, while the emission of the detection system grows. The detection platform exhibits the limits of detection (LODs) in colorimetric and luminescence detections are 8.9 nM and 8.8 nM, respectively, which can mutually validate the assay results. More importantly, Fe/Zn/Ir TAzyme has been fabricated into test swabs to monitor MT in the way of portable and naked-eye detection. This double-role TAzyme provides new conceptions for researchers to explore novel and highly efficient nanozymes in future.
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Heliyon
·
2022
·
IF 3.776
Xuezhong Li,Yue Wang,Qi Guo
The porous iron-based metal organic frameworks (NH 2 -MIL-101(Fe)), which consists of 2-amino benzene dicarboxylic acid (H 2 BDC-NH 2 ) and ferrous ions were synthesized through one-step hydrothermal method. The surface area and pore volume of as-synthesized NH 2 -MIL-101(Fe) were 66.48 m 2 /g and 0.09 cm 3 /g, respectively. The excellent photocatalytic performance endows NH 2 -MIL-101(Fe) to generate hydroxyl radical ( OH), which then acting as efficiently active sites for azo dye degradation in wastewater. Meanwhile, the outstanding stability ability of NH 2 -MIL-101(Fe) indicates the potential candidate for wastewater treatment.
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IONICS
·
2026
·
IF 3.4
Wu Keying,Xie Wenda,Liu Xingjian,Chen Jing,Pu Haitao,Luo Bing
Separator design can improve electrolyte wetting, ion transport and dimensional stability in lithium metal cells with LiFePO 4 cathodes. Here, an Fe–Ti metal–organic framework (MOF) was prepared by a solvothermal route and incorporated into poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) nanofiber membranes by electrospinning. The effects of filler loading were evaluated against pristine PVDF-HFP and a commercial Celgard separator. Among the investigated compositions, PVDF-HFP/MOF-10 exhibited an electrolyte contact angle of 18°, an ionic conductivity of 1.7 × 10⁻ 3 S cm⁻ 1 at 30 °C, and an apparent Li⁺ transference number of 0.56 under the Bruce–Vincent measurement protocol. The composite also showed improved thermal dimensional stability. Li‖Li cells operated for over 500 h at 1 mA cm⁻ 2 and 1 mAh cm⁻ 2 , while LiFePO 4 ‖Li cells retained 92.3% of their initial discharge capacity after 500 cycles at 1 C. These observations support the use of the composite separator for improving performance under the tested conditions. Adsorption calculations provide a possible molecular explanation for electrolyte affinity, but do not establish ion desolvation, selective anion immobilization or a unique bimetallic synergy in the operating electrolyte. The contribution is the integration and loading optimization of an Fe–Ti MOF within a porous PVDF-HFP separator, with the microscopic transport mechanism remaining to be resolved.
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MICROCHIMICA ACTA
·
2021
·Vol. 188
·期 8
·1-11
·
IF 5.833
Zhang Youxiong,Li Bing,Wei Xianhu,Gu Qihui,Chen Moutong,Zhang Jumei,Mo Shuping,Wang Juan,Xue Liang,Ding Yu,Wu Qingping
A facile and versatile competitive electrochemical aptasensor for tobramycin (TOB) detection is described using electrochemical-deposited AuNPs coordinated with PEI-functionalized Fe-based metal-organic framework (AuNPs/P-MOF) as signal-amplification platform and a DNA probe labeled with methylene blue (MB) at the 3′-end (MB-Probe) as a signal producer. First, F-Probe (short complementary DNA strands of both the aptamer and the MB-Probe label with a sulfhydryl group at the 5′-end) was immobilized on the AuNPs/P-MOF modified electrode as detection probes, which competed with TOB in binding to the aptamer. TOB-aptamer binding resulted in F-Probe remaining unhybridized on the electrode surface, so that a significant current response was generated by hybridizing with MB-Probe instead. The developed strategy showed favorable repeatability, with a relative standard deviation (RSD) of 4.3% computed over five independent assays, and high stability, with only 6.8% degradation after 15 days of storage. Under optimal conditions, the proposed aptamer strategy exhibited a linear detection range from 100 pM to 500 nM with a limit of detection (LOD) of 56 pM (S/ N = 3). The electrochemical aptasensor demonstrated remarkable selectivity, and its feasibility for accurate and quantitative detection of TOB in milk samples was confirmed (RSD < 4.5%). Due to its simple design, easy operation, and high sensitivity and selectivity, the proposed method could expect to detect other antibiotics by replacing the aptamers. In summary, this study provides a simple and effective new strategy for electrochemical aptasening based on MOF-based sensing interface. Graphical abstract
Scheme illustration of label-free competitive electrochemical aptamer-based detection of tobramycin based on electrochemically deposited AuNPs coordinated with PEI-functionalized Fe-based metal-organic framework as signal-amplification platform.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Mingkai Liu,Zihan Wan,Yunlian Liu,Qian Jia,Ruqi Zhang,Yang Li,Ying Pan,Hongguang Jin
Hydrogen production is crucial for supporting the energy transition and achieving carbon neutrality goals. However, conventional natural gas steam reforming suffers from high temperatures, which lead to substantial exergy losses, promote carbon deposition, and compromise operational stability. Here, a mid-temperature (500–600 °C) chemical looping steam reforming (CLSR) process is proposed for efficient natural gas conversion. Fe Ni oxygen carrier particles were developed by varying Fe/Al precursors, calcination temperatures, and powder sizes to achieve modulated physico-chemical properties. Systematic evaluation of chemical reactivity and physical indicators identified nm-Fe 2 O 3 -γ-Al 2 O 3 calcined at 1200 °C as the optimal formulation, combining high reactivity with a mechanical strength of 55.3 N. Reaction behavior was further investigated in a bench-scale packed-bed reactor with 100 g oxygen carrier loading. At 600 °C and a steam-to‑carbon ratio of 1.5, the optimized process achieved over 85 % natural gas conversion and nearly 100 % ethane conversion, yielding a hydrogen production of 25 mL g OC −1 and an H 2 /CO ratio of 1.8. In addition, long-term stability tests confirmed that the oxygen carriers retained their oxygen transfer capacity and microstructure after 1000 isothermal redox cycles, while cold attrition tests showed a mass loss of only 0.73 % over 2 h. Furthermore, in-situ DRIFTs and XRD provided clear mechanistic insights into the CLSR process over Fe Ni oxygen carriers, confirming the reaction pathway of natural gas activation and hydrogen production. Collectively, these findings highlight the promising performance of CLSR as an efficient route for low-carbon hydrogen production from natural gas.`.
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