ACS Applied Energy Materials
·
2026
·
IF 5.5
Xueyan Ma,Tianmei Xu,Xinmeng Li,Qingcui Liu,Siyi Jing,Yudai Huang,Juan Ding,Weiwei Meng
Abstract Vanadium redox flow batteries (VRFBs) have garnered distinguished attention for their feasibility to enable cost-effective large-scale energy storage. Nonetheless, the electrochemical activity of electrodes is constrained during vanadium redox reactions, posing a problem for accomplishing high-performance VRFBs. Herein, we prepare a defect-rich Fe-coal-based carbon nanofiber electrode (Fe-ECNFs-600) via electrospinning followed by high-temperature carbonization. The Fe-ECNFs-600 contains moderate oxygen defects, Fe3O4 nanoparticles, and oxygen-containing functional groups, which can regulate the electronic structure, improve electrical conductivity, electrolyte wettability, and catalytic activity for the VO2+/VO2+ and V3+/V2+ redox couples. The VRFB with the Fe-ECNFs-600 electrode exhibits improved discharge capacity and energy efficiency compared with ECNFs-600 at 100 mA cm–2. This work may provide a defect regulation strategy for developing self-supporting electrode materials for VRFBs.
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Qiulin Ma,Yali Wang,Gang Wang,Chun Chang,Liyang Ma
Abstract Solvent modulation synergized with Fe catalysis offers a promising strategy for regulating fractionated bio-oil formation during co-hydrothermal liquefaction. Herein, corn stover (CS) and spirulina (SP) were used as feedstocks in this study. An ethanol-water co-solvent system (EWCS) containing 62.5 vol% ethanol was identified as optimal, where the bio-oil yield and energy recovery (ER) peaked at 52.49 and 95.61%, respectively, far above those of pure water (23.00, 45.07%) and pure ethanol (47.95, 81.57%). To avoid overlapping components obscuring the intrinsic catalytic behaviors of Fe, the recovered bio-oil was separated into water-soluble (WSB) and water-insoluble (WISB) fractions. The bio-oil yields, elemental distributions, and chemical compositions were compared under Fe catalysis in pure water, EWCS, and pure ethanol. The solvent-only effect raised the WSB yield to nearly 40% and drove feedstock nitrogen toward the WSB, elevating the nitrogen recovery (NR) of the WSB in EWCS to 55.73% while suppressing that of the WISB to 9.68%. The heating values of the two fractions remained comparable under Fe-catalyzed conditions, ranging from 30.20 to 34.30 MJ/kg. Fe barely changed the bulk bio-oil yield yet markedly reshaped the composition. The catalytic performance of Fe exhibited a clear dependence on the proportion of water within the co-solvent. It promoted hydrodenitrogenation (HDN) and phenol enrichment in pure water, directed ethanol dehydrogenation into aldol condensation that anomalously raised the WISB oxygen content in EWCS, and integrated esterification with hydrodeoxygenation (HDO) in pure ethanol. The regulatory effect of solvent polarity on nitrogen distribution and Fe active species provides innovative insights for the sustainable production of upgraded Co-HTL bio-oils.
✓ 已验证
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2026
·
IF 3.2
Yongwei Li,Shuting Fan,Zhihao Fang,Xiangru Zeng,Jinting Jiang,Fangfang Liu,Xuening Lun,Chengjie Li
A simple mineralizer regulation strategy is developed to tune the structure of hydrothermal MIL-100(Fe). • NaHCO 3 enhances the surface area of MIL-100 (Fe), affording superior XO adsorption performance. • Synergistic pore adsorption, hydrogen bonding, Fe 3+ coordination and π-π stacking enable efficient XO removal. Metal-organic frameworks (MOFs) are promising crystalline porous solids, whose functional properties are highly dependent on their crystallinity, defect states and pore characteristics. In this work, hydrothermal synthesis was employed to prepare MIL-100(Fe) materials modulated by three different mineralizers: sodium carbonate, acetic acid, and sodium bicarbonate; mineralizer-free pristine MIL-100(Fe) was used as the reference sample. The addition of mineralizers effectively modulates the crystal structure and porosity of MIL-100(Fe). All mineralizer-modified samples exhibit larger specific surface area compared with the pristine material. Among them, NaHCO 3 -regulated MIL-100(Fe) achieves the best adsorption performance toward xylenol orange (XO), which originates from its optimized porous structure. Adsorption experimental data fit well with the pseudo-second-order kinetic model and Langmuir isotherm model. The maximum monolayer adsorption capacity calculated by the Langmuir model reaches 155.28 mg/g, which is competitive with many reported adsorbents. Synergistic adsorption mechanisms, including pore-filling effect, hydrogen bonding, Fe 3+ complexation and π-π stacking interactions, have been elucidated. This work presents a facile mineralizer-mediated strategy for tuning the solid-state structural features of MIL-100(Fe), offering experimental insights for the structure-performance optimization of Fe-based MOF solids. Download: Download high-res image (357KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Zixuan Xu,Yiming Wang,Rufeng Zhang,Anmin Liu,Yumin Zhang,Gaohong He,Yixiang Huang,Qiulin Li,Yuheng Wang,Min Li,Wenjun Zhang
In situ coordination assembly of Cu 2 O/Cu-TCPP(Fe) bimetallic nanozyme. • Intermetallic Cu + /Fe 3+ electron transfer accelerates the peroxidase-like activity. • ML-integrated dual-channel array distinguishes six antioxidants with 100% accuracy. • Precise quantification of antioxidant mixtures in biofluids via RF. Accurate identification and quantitative analysis of antioxidants in complex biological fluids are the keys to the early detection of severe diseases. The single-channel sensors suffer from weak specificity and critical multi-component signal crosstalk, which hardly meet the accurate analytical requirements. Herein, an intelligent colorimetric sensing platform of bimetallic mixed-valence nanozyme was integrated with machine learning (ML) to improve the analytical precision. Fe/Cu nanosheets of mixed valence were successfully acquired through Cu 2 O-coordinated anchoring in situ into iron porphyrin (TCPP(Fe)). This mixed-valence strategy effectively promoted the synergistic catalysis and valence cycling among the metal active sites, thereby significantly enhancing the peroxidase (POD)-like activity of the Cu 2 O/Cu-TCPP(Fe) ( V max as high as 8.107 × 10 −7 M·s −1 and K m as low as 0.913 mM). DFT calculations indicated that the introduction of Cu 2 O promoted strong Cu 3d and Fe 3d orbital hybridization and an upshift of the Cu d-band center, accelerating interfacial electron transfer and Fe/Cu valence cycling, thereby revealing the intrinsic mechanism underlying the enhanced catalytic activity. Taking the differential catalytic responses of the nanozyme with two different substrates, a highly sensitive dual-channel sensor array was designed with machine learning. Combined with algorithms of artificial neural network (ANN), random forest (RF), and support vector machine (SVM), etc., 100% accurate qualitative discrimination of six antioxidants was remarkably completed. Relying on the outstanding capability of the Random Forest (RF) algorithm to remarkable robustness in handling high-dimensional sample datasets, the sensor array successfully established a precise quantitative model for multiple antioxidants in complex samples, remarkably and intelligently sensing the diverse components in urine and serum. This work paved a new way for highly active bimetallic nanozymes to construct a trustworthy sensing platform as a diagnostic tool for the intelligent profiling of multi-component biomarkers in complex matrices. Download: Download high-res image (150KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
Research
·
2025
·
IF 10.7
Chengjunyu Zhang,Sen Liu,Jianhui Zhang,Junlin Lu,Zehua Chen,Bolin Pan,Chu Liu,Ming Huang,Hengji Zhan,Hongjin Wang,Siting Chen,Kaiwen Jie,Baoqing He,Jingdie Wu,Ye Li,Haifeng Wang,Jing Zhao,Qiang Zhang,Xu Chen
Ferroptosis has promising potential for augmenting antitumor effects, but monotherapy with ferroptosis inducers in vivo has been reported to have limited efficacy in tumor management. The development of synergistic strategies with targeted capabilities is crucial for enhancing the antitumor efficacy of ferroptosis inducers. In this study, we designed and characterized a novel self-assembled nanomedicine by mixing ferrous ions (Fe 2+ ) and epigallocatechin gallate (EGCG) in a controllable manner and encapsulating the ferroptosis inducer RSL3, named Fe-EGCG@RSL3. This multifunctional nanomedicine effectively induces ferroptosis and growth inhibition in bladder cancer cells and patient-derived organoids. In vivo, Fe-EGCG@RSL3 was enriched in the subcutaneous tumors of allogenic and xenograft mouse models, thereby substantially overcoming RSL3 resistance. Intravesical instillation of Fe-EGCG@RSL3 controls orthotopic bladder tumor progression. Furthermore, nanomedicine potentiates the therapeutic effect of anti-programmed cell death protein 1 (PD1) immunotherapy by increasing the cytotoxicity of CD8 + T cells to cancer cells and modulating the proportions of both T-cell and myeloid cell subpopulations within the tumor immune microenvironment. Overall, Fe-EGCG@RSL3 has dual functions as a multifaceted nanomedicine that integrates ferroptosis induction with immunomodulation, offering a novel and clinically translatable strategy for bladder cancer therapy.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zehao Wang,Huayu Chen,Yesheng Fu,Hang Yin,Dandan Yu,Junhui Liang,Yuexiang Huang,Liuqi Wang,Wei Gao,Da Chen,Yang Hou
Hydrogen production technology by water electrolysis highly relies on active and durable electrocatalysts for oxygen evolution reaction (OER). For Fe-containing electrocatalysts, the surface evolution during OER generally induces the dissolution of Fe into electrolyte. The excessive changed and dynamic surface quite puzzles the initial catalyst design, and moreover the excessive Fe loss could result in instability of the reconstructed surface, which might affect the formation of active species and the durability on the reaction interface. Here, we introduced a functional component of ethylenediamine-intercalated black phosphorus (eda-BP) to the Ni 1.5 Fe 0.5 B. Through electronic interaction between eda-BP and Ni 1.5 Fe 0.5 B, the excessive Fe loss during surface reconstruction process is effectively suppressed and the formation of Ni oxyhydroxide active species is facilitated, thereby enhancing the stability of the catalytic reaction interface. At the meantime, the ⁎ OH adsorption capacity on the reaction surface is regulated and the heterostructure catalyst exhibits significantly improved OER reaction kinetics. The Ni 1.5 Fe 0.5 B/eda-BP demonstrates a low OER overpotential ( η = 221 mV) at the current density of 10 mA cm −2 and sustainable activity. This work offers a facile strategy for improving the reactive interface for efficient and durable OER process.
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Fuhua Wei,Min Li,Qinhui Ren,Qin Zhang,Wei Shang,Diaodiao Zhang,Lanyan Tian,Zhao Liang
In this study, Fe/Zn-metal–organic frameworks (Fe/Zn-MOFs) were synthesized via microwave-assisted ball milling and characterized via Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray diffraction, and nitrogen adsorption–desorption analysis. Fe/Zn-MOFs were highly effective in removing common organic pollutants. Experimental results revealed that Fe/Zn-MOFs exhibited excellent removal efficiencies, with maximum rates of 95.2 and 99.3% for levofloxacin hydrochloride (LH) and Congo red (CR), respectively. Additionally, Fe/Zn-MOFs exhibited remarkable adsorption capacities for CR and LH, with maximum values of 2806.5 and 77.8 mg/g, respectively. These results highlight the potential of Fe/Zn-MOFs as an effective material for the removal of organic pollutants.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Iwei Wang,Hailiang Nie,Yongliang Yan,Manyi Cai,Hui Zhou,Yongqing Xu,Yi Xing,Hongzhi Ma
Reconstructing dual functional materials (DFMs) from industrial waste such as steel slag offers a sustainable approach to mitigate environmental pollution while valorizing hazardous byproducts. Although the steel slag is rich in calcium and iron, its direct use is hindered by the formation of inactive solid solutions (e.g., Ca 2 Fe 2 O 5 , Ca 2 SiO 4 ), limiting CO 2 capture and conversion performance. In this study, we reconstruct steel slag into a high-performance DFM composed of CaO (adsorptive phase) and FeOx (catalytic phase) for integrated CO 2 capture and utilization (ICCU). The optimized DFM achieves a CO 2 uptake of 9.15 mmol g −1 , a CO yield of 7.80 mmol g −1 , 87 % CO 2 conversion, and 100 % CO selectivity at 650 °C, substantially outperforming the raw slag. Moreover, the DFM maintains outstanding cyclic stability over 10 cycles, with CO 2 uptake ranging from 8.25 to 10.38 mmol g −1 and CO yield from 6.90 to 8.25 mmol g −1 . In-situ XRD and DRIFTS analyses reveal a dual Fe-phase looping mechanism (Fe/FeO and Fe/Ca 2 Fe 2 O 5 ), and a formate-mediated hydrogenation pathway during in-situ CO 2 conversion. This work highlights the untapped potential of industrial waste for developing efficient, sustainable materials for integrated CO 2 capture and utilization.
✓ 已验证
产品关联
DOI
高影响因子
IONICS
·
2025
·
IF 2.6
Liu Dongni,Guo Lichi,Duan Ruochen,Zhang Shengwei,Li Mingying
Microbial fuel cells (MFCs) represent an emerging energy technology that generates electricity through microbial-organic interactions, with the anode serving as a critical component for wastewater-to-electron conversion. This study focuses on developing porous iron-nickel (Fe–Ni) alloys as potential anodes for MFCs, employing electrodeposition to fabricate these anodes with systematically varied Fe/Ni ratios. Through intrinsic electrochemical performance screening, the work aims to achieve composition optimization for high-performance microbial fuel cell anodes. Multi-dimensional analysis integrating linear sweep voltammetry (LSV), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and Tafel polarization was conducted to establish structure–activity relationships and synergistic catalytic mechanisms of the alloys. Key findings reveal that compositional optimization profoundly impacts the performance of these potential anodes: the Fe 7 Ni 3 alloy exhibited significantly superior electrochemical activity compared to pure Ni, characterized by dramatically enhanced peak current density, and improved charge storage capacity. Furthermore, Fe 7 Ni 3 demonstrated minimal charge transfer resistance and excellent reaction kinetics. These results validate that bulk composition engineering of porous Fe 7 Ni 3 offers a highly promising strategy for developing potential anode materials for high-performance MFCs, effectively addressing the stability-activity trade-off inherent in conventional surface-modified anodes. This work provides a composition-driven design paradigm for bioelectrochemical systems, paving the way for future scale-up studies focusing on long-term stability and integration into wastewater treatment modules. Graphical abstract
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
·
2025
·
IF 3
Yusheng Jiang,Xingyu Liu,Teng Li,Hankun Zhang,Lingtao Zeng,Yundi Geng,Hongwei Wu,Changjiang Liu,Hongchao Li,Ding Wang,Yan Li,Chuncheng Yang
Fe-based amorphous alloys have garnered significant attention as high-efficiency Fenton-like catalysts for wastewater treatment due to their unique disordered atomic structure and abundant active sites. However, challenges remain in achieving both ultra-fast degradation kinetics and facile catalyst recovery. In this study, magnetically recoverable Fe-Si-B amorphous nanoparticle catalysts were successfully prepared by the chemical reduction method, and Rhodamine B degradation experiments were carried out under a Fenton-like system. The structural, morphological, compositional, thermal, and magnetic properties of the Fe-Si-B nanoparticles were characterized before and after the catalytic reaction. The results demonstrated that the nanoparticles retained their amorphous structure after the catalytic reaction and exhibited excellent soft magnetic properties with a saturation magnetization of 94.41 emu/g. Under conditions of 5 mM H 2 O 2 , 70 °C temperature, and pH = 3, the catalyst achieved over 99 % degradation efficiency for 20 mg/L Rhodamine B within 2 min at a dosage of only 10 mg/L. The degradation process followed a pseudo-first-order kinetic model with an activation energy as low as 37.62 kJ/mol. Radical quenching experiments indicated that ·OH played a dominant role in the degradation reaction, and the synergistic effect between the amorphous structure and high-density active sites significantly enhanced the generation efficiency of ·OH, thereby improving catalytic performance.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2025
·
IF 4.9
Bai Yizhuo,Zhang Shiyu,Zhang Kaifan,Li Jiali,Zhang Jiehe,Hao Mingxu,Tao Haisheng
Nitro-functionalized NO 2 -MIL-53(Fe) was synthesized by modifying MIL-53(Fe) to enhance persulfate activation for the degradation of tetracycline (TCN). Comparative studies with NH 2 -MIL-53(Fe) and pristine MIL-53(Fe), it was found that NO 2 -MIL-53(Fe) is categorized as an ideal type I isotherm, without observable hysteresis loop. The introduction of nitro-group incorporation significantly increased specific surface area clocking in at 298.3 m 2 /g and an average pore diameter of 3.3 nm, created uniform micropores, and improved adsorption capacity. Structural characterization confirmed Fe(II) generation and electron transfer in NO 2 -MIL-53(Fe), enabling 82.1% TCN removal within 30 min. Radical (SO 4 ·− , ·OH, O 2 ·⁻ ) and non-radical ( 1 O 2 , charge transfer) pathways synergistically drove degradation, as evidenced by quenching experiments and EPR analysis. ESI-Q-TOF MS identified key intermediates, proposing plausible TCN degradation pathways. This study highlights the potential of nitro-functionalized metal-organic frameworks (MOFs) in advanced oxidation processes, emphasizing their enhanced catalytic activity and performance mechanisms, and provides new ideas for the remediation of pollutants in water bodies. Graphical abstract
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Kaijin Guo,Mingliang Li,Yahao Liu,Zhihui Zhu,Mengfei Wang,Xuewen Tang,Guangming Zhu
In the oxygen evolution reaction (OER), the lattice oxygen mechanism (LOM) has the potential to exceed the theoretical overpotential limit of approximately 370 mV associated with the traditional adsorbate evolution mechanism (AEM). Therefore, it is crucial to promote lattice oxygen involvement in the OER through careful design. We prepared a self-supported NiFeV hydroxide pre-catalyst electrode using a one-step electrochemical deposition method. Most of the V in the pre-catalyst dissolved during electrochemical activation, as confirmed by various ex situ and in situ characterization studies. The actual catalyst comprised V-doped FeOOH and NiOOH. Notably, significant oxygen vacancies were generated due to V element dissolution and leaching. The reconstructed catalyst can facilitate oxygen production via both the AEM and LOM, supported by theoretical calculations and experimental validation. It operates steadily for 750 hours at a current density of 50 mA cm−2, requiring only 200 mV and 253 mV overpotentials to achieve current densities of 10 mA cm−2 and 100 mA cm−2, respectively. This work elucidates the electrochemical reconstruction of V-containing hydroxides in alkaline media under anodic conditions while providing valuable insights into developing high-performance catalysts that involve the LOM.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）