JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.3
Guilian Li,Jintong Guo,Daming Yang,Hongji Xu,Linglong Hu,Shuo Geng,Ming Feng
Sluggish oxygen evolution reaction (OER) kinetics impede alkaline electrolysis. Here, vertically aligned Ru-decorated, Fe-doped Ni 3 S 2 nanowire arrays on Ni foam (Ru-NFS) are synthesized via a one-step hydrothermal route. Distinct from conventional Ni 3 S 2 →NiOOH systems, we operate in a low-Ru, Fe-co-modulated regime where Ru remains S-ligated and highly dispersed, evidenced by the absence of Ru-Ru scattering in EXAFS. This coordination accelerates NiOOH formation, enhances charge transfer, and mitigates Ru loss, yielding Ru-normalized activity beyond single-modulated controls. In 1.0 M KOH (iR-corrected), Ru-NFS requires only 206 and 245 mV to reach 10 and 100 mA cm -2 , respectively, and sustains stable operation. Mechanistically, COHP analysis shows that Fe substitution and, more strongly, Ru incorporation progressively weaken Ni-S bonds in the precursor, enabling rapid anodic reconstruction to NiOOH. On the reconstructed surface, DOS/PDOS reveal a d-manifold shifted toward EF with increased states, implying higher hole availability and optimized M-O covalency for coupled proton-electron transfer. DFT-CHE at 1.23 V (RHE) identifies *O→*OOH as the thermodynamic RDS, with ΔG reduced from 0.70 eV (NiOOH) to 0.48 eV (Fe-NiOOH) and 0.38 eV (Ru,Fe-NiOOH). Overall, Ru-Fe co-modulation couples reconstruction control with adsorbate-binding optimization, providing a blueprint for robust high-rate OER anodes.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2026
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IF 3.9
Mengyu Wang,Shuhan Zhang,Chaoyue Meng,Fenglei Han
To enhance the conversion efficiency and product selectivity in CO2 hydrogenation to methanol, we prepared a series of Cu–Fe bimetallic catalysts with varied Cu/Fe ratios supported on HZSM-5 by an initial impregnation method and evaluated them in a dielectric barrier discharge (DBD) nonthermal plasma reactor. Among these, the Cu7Fe3/HZSM-5 catalyst achieved a CO2 conversion of 12.1% and a methanol selectivity of 9.6% in plasma-assisted CO2 hydrogenation, with activity decay below 3% over 400 min of continuous operation. The catalyst structure and surface properties were systematically investigated by SEM, XRD, BET, XPS, H2-TPR, CO2-TPD and CO-TPD. Catalytic performance was assessed under optimized plasma reaction conditions (CO2/H2 = 1:3, total flow 70 mL·min–1, discharge power 20 W, circulating water temperature 30 °C). Furthermore, in situ DRIFTS indicated an oxygen vacancy-dominated formate pathway: oxygen vacancies in FeOx strengthened CO2 chemisorption and induced polarization of the C═O bond; Cu+ sites facilitated sequential hydrogenation of formate intermediates (HCOO*); and the Cu0-HZSM-5 interface optimized H* spillover, collectively suppressing CH4 formation. These results underscore that vacancy engineering and metal–zeolite interfacial effects are pivotal in steering plasma-catalytic CO2-to-methanol selectivity.
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MICROCHEMICAL JOURNAL
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2026
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IF 5.1
Zhiguang Yang,Zexiang Liu,Ke He,Qianqian Chen,Chenxue Yao,Qiaohuan Cheng,Huiqiang Li,Renjie Wang,Zhiwei Zhao,Xiaochen Li
Given that dopamine (DA) is an essential neurotransmitter for regulating physiological functions, the accurate detection of its concentration is critical for diagnosing neurological disorders. With their tunable pore structures and ultrahigh specific surface area, MOFs are an ideal candidate for electrochemical DA sensing. However, their inherent poor electrical conductivity and insufficient structural stability remain the major bottlenecks hindering practical application. In this study, a two-dimensional hollow leaf-structured ZIF-PDA-Fe composite was successfully constructed through a synergistic strategy of polydopamine (PDA) modification and iron (Fe) doping. Subsequently, a short (10 min) dielectric barrier discharge (DBD) plasma treatment was applied to enhance its electrochemical DA sensing performance. Characterizations revealed that the DBD-treated ZIF-PDA-Fe-10 not only retained the original crystalline and morphological structure but also exhibited a significant increase in the content of surface Fe O and Zn O functional groups. Notably, a 55.7% reduction in charge transfer resistance (Rct) was achieved, indicating a marked acceleration of electron transfer kinetics. The preserved hollow porous framework, combined with the functionally modified surface, further facilitated DA mass transport-collectively contributing to a synergistic enhancement of the electrochemical response. The resulting sensor demonstrated a wide linear detection range for DA (1–400 μM) with a low detection limit of 0.93 μM. It also showed excellent selectivity against interfering substances (ascorbic acid and uric acid) and maintained 80% signal stability over 100 continuous cycles, outperforming conventional pyrolysis-derived counterparts. This work thus provides a novel strategy for the surface engineering of MOF-based electrochemical sensors.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 8.3
Wenyao Xue,Ziyue Wang,Hongliang Fu,Guanjie Xue,Jing Zhao,Yue Lian,Zhifeng Wang,Yongfeng Hu,Huaihao Zhang
Four-electron transfer process of oxygen evolution reaction (OER) has become a bottleneck restricting water electrolysis, due to its inherently high kinetic energy barrier. Therefore, the exploration for high-efficiency and long-term stable non-noble metal OER catalysts is crucial for sustainable energy conversion. This work designs a molten salt-mediated ball milling-pyrolysis stepwise treatment to synthesize spongy V 2 O 5 composite Fe-intercalated graphitic nitrogen (N–V 2 O 5 @FeC). Specifically, Fe-intercalated graphite is achieved using the FeCl 3 /KCl molten salt system, a highly conductive FeC substrate being constructed accordingly. Then, NH 3 generated from melamine pyrolysis enables spongy porous structure construction and N-doping. N–V 2 O 5 @FeC catalyst possesss the following advantages: First, spongy porous structure greatly increases exposure of active sites, while Fe intercalation-induced graphite edge defects and Fe–O–V bonds jointly enhance active site density of V 2 O 5 composite, thereby boosting catalyst activity. Second, N-doped carbon network improves electron transport performance, enabling catalyst's charge transfer resistance decline to 19.9 Ω. Moreover, dual stabilization mechanisms of Fe–O–V stable structure and chemical anchoring of V–O–C bonds endow the material with good structural stability under alkaline conditions. In detail, N–V 2 O 5 @FeC reaches 10 mA cm −2 current density at only 299 mV overpotential in alkaline solution, with low Tafel slope (53.0 mV dec −1 ) and 50-h stability.
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Chemical Engineering Journal Advances
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2026
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IF 6.9
Long Liu,Jie Zou,Zihao Zhou,Yuxuan Yang,Xueqiang Shao,Yangyang Bian,Mingwen Zhang,Jinbei Yang
In this study, functionalized ionic liquids were precisely anchored onto the pores and surfaces of the high-specific-surface-area MIL-101(Fe) metal-organic framework (MOF) carrier through covalent bonding, achieving the ordered arrangement of active sites and the modulation of the local microenvironment. Specifically, carboxyl-functionalized imidazolium ionic liquids bridge Fe³⁺ ions and terephthalic acid ligands to construct the supported acidic ionic liquid MIL-101(Fe)-[(CH₂COOH)₂IM][HSO₄] via solvothermal co-assembly. The obtained catalyst efficiently facilitates the esterification of various free fatty acids with methanol for biodiesel production. The catalyst was characterized by XRD, FT-IR, XPS, SEM, BET-BJH, and TGA. The catalyst demonstrated high acidity (6.31 mmol/g), excellent thermal stability, and efficient catalytic performance. Under the operating conditions optimized by response surface methodology (catalyst dosage of 8.64%, methanol-to-oleic acid molar ratio of 16.9:1, reaction temperature of 67.0 °C, and reaction time of 4.0 h), the oleic acid conversion over MIL-101(Fe)-[(CH₂COOH)₂IM][HSO₄] reached 97.66%, and it still maintained favorable catalytic performance after 7 cycles. In addition, MIL-101(Fe)-[(CH₂COOH)₂IM][HSO₄] also exhibited broad substrate applicability, and could serve as a promising catalyst for biodiesel preparation.
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Advanced Composites and Hybrid Materials
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2026
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IF 15.5
Yang Cao,Luo Jialiang,Wang Yue,Xue Yiqing,Liu Guigao,Lu Zhehong,Wang Suwei,Jiang Wei
Rational microstructure design and compositional regulation have emerged as effective pathways to enhance electromagnetic wave (EMW) absorption, However, simultaneously achieving strong absorption, broad bandwidth, thin thickness and low filler loading remains challenging. Herein, three-dimensional hierarchical heterostructures comprising amorphous carbon-wrapped magnetite supported on flower-like reduced graphene oxide (Fe₃O₄@C/FRGO) was constructed through spray-drying assembly, spatially confined solvothermal crystallization, and defect-modulated carbonization. By tailoring the reduction degree of FRGO and tuning ferrite composition through thermal treatment, the dielectric-magnetic properties and interfacial interactions are precisely regulated. With merely ≈ 3.26 wt% incorporation of FRGO, the optimized composite exhibits a minimum reflection loss (RL min ) of -66.29 dB at 1.94 mm (20 wt% filler) and a broad effective absorption bandwidth (EAB) of 6.60 GHz (11.30–17.90 GHz) at 2.73 mm (30 wt% filler). This exceptional performance is attributed to the engineered heterointerfaces that facilitate multi-path energy dissipation via magneto–dielectric coupling optimized impedance matching, intensive interfacial polarization from abundant hierarchical architectures and the flower-like structure induced multiple scatterings. This study highlights the pivotal role of interfacial engineering in heterostructured absorbers and offers a design paradigm for high-performance EMW-absorbing materials through coordinated component–structure modulation. Graphical abstract The alternative text for this image may have been generated using AI.
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GEOPHYSICAL RESEARCH LETTERS
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2026
·Vol. 53
·期 14
·e2026GL122763
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IF 5
Yuanjing Li,Liangliang Zhang,Fabin Pan,Xiaojing Lai,Xiang Wu,Feng Zhu
Mercury is one of the few terrestrial planets in the solar system with a magnetic field, yet the energy source to power its core dynamo remains unclear to date. Si, C, and possibly H are the top candidate light elements for its liquid core. Here, we showed experimentally that Si, C, and H in Fe-Si-C and Fe-Si-C-H liquids share a simultaneous solubility at 9–21 GPa, 1,400°C–2,200°C, and this solubility decreases with decreasing temperature. When exceeding the simultaneous solubility, light elements will exsolve from the Fe melt as elemental phases such as diamond, graphite, silicon, and H 2 . We infer that if Mercury had an early liquid core primarily composed of saturated Fe-Si-C-(H) liquid, subsequent cooling would lead to continuous light element exsolution in its liquid core. The gravitational potential released by the exsolved light elements can drive the compositional convection and power its long-term core dynamo.
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DIAMOND AND RELATED MATERIALS
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2026
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IF 5.2
Yongzhi Zhao,Gengchen Bai,Wenhe Yu,Jianfang Liu,Baorui Jia,Xuanhui Qu,Mingli Qin
The development of efficient non-precious metal catalysts for the oxygen reduction reaction (ORR) is crucial for advancing sustainable energy technologies. Although single-atom Fe–N–C materials hold great promise, they are often limited by metal aggregation issues associated with conventional carbon supports. In this study, we propose a novel catalyst design that stabilizes Fe–N–C single-atom sites on a robust diamond-based matrix to fabricate a highly efficient electrocatalyst. With mild graphitization of the diamond surface to enhance its electrical conductivity during electrocatalytic processes, the Fe species are atomically dispersed and form coordinate covalent bonds with pyridinic N. In alkaline electrolyte, the Fe–N–D catalyst exhibits enhanced ORR activity, outperforming both pristine diamond and carbon black reference samples. Density functional theory (DFT) calculations reveal that the active Fe–N 4 –C configuration promotes kinetically efficient ORR by optimizing charge transfer and weakening the O O bond. This work integrates conductive sp 2 ‑carbon with a stable sp 3 -diamond core to establish a novel support for anchoring single-atom catalysts, providing a new substrate materials-design paradigm for electrocatalysis. Download: Download high-res image (124KB) Download: Download full-size image
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124301
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IF 7.5
Nan Sun,Hongxia Deng,Niya Ye,Yang Zhang,Yue Zhang
Efficient monitoring and controlling the fluoride content is of paramount significance for human health owing to the double-edged sword characteristic. Herein, a novel dual-functional Ce/Fe bimetallic MOF-derived mesoporous carbon (Ce/Fe@C) is engineered through competitive coordination polymerization and calcination for the selective detection and adsorption of fluoride. Attributed to unique oxygen vacancies, Ce/Fe@C could productively capture fluoride by forming specific Ce/Fe–F and C–F bonds, affording a high adsorption capacity of 146.57 mg g −1 . Harnessing the fluoride complex-mediated blocking of active sites promotes the deterioration of peroxidase-mimicking activity of Ce/Fe@C, facilitating the sensitive colorimetric detection of fluoride with a limit detection of 0.245 μmol L −1 . Most importantly, facile magnetic separation of Ce/Fe@C not only simplifies the operation for fluoride treatment but also improves the detection accuracy via background interference elimination, as well as excellent reusability. As functional nanozyme and adsorbent, Ce/Fe@C is successfully utilized for the specific detection and scavenging of fluoride in various complicated samples. This work furnishes a reliable “two in one” platform for alleviating fluoride contaminant stress and highlights the tremendous prospects of versatile bimetallic MOF-derived carbons for food analysis and environmental remediation.
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Processes
·
2026
·Vol. 14
·期 13
·2150
·
IF 3.4
Pei Liu,Ao-Tian Gu,Jian Chen,Jun Chen,Zi-Rui Tian,Lei-Lei Gu,Yi Yang
With the rapid development of the pharmaceutical industry and animal husbandry, conventional wastewater treatment plants have difficulty effectively degrading the widely occurring ceftiofur sodium (CEF) in aquatic environments. To address this issue, this study successfully loaded Fe/Co-ZIF onto carbon nanofibers (CNF), thereby preparing Fe/Co-ZIF@CNF composites with well-dispersed supported materials and a stable structure. The as-prepared Fe/Co-ZIF@CNF was further applied in a persulfate-based advanced oxidation system (SR-AOPs) for CEF degradation and exhibited good catalytic performance. When the Fe/Co molar ratio was 1.25:1, the Fe/Co-ZIF1.25material achieved a CEF degradation efficiency, kobsvalue, and TOC removal rate of 94.0%, 0.135 min−1, and 43.8%, respectively. Radical quenching experiments preliminarily indicated that SO4•−played a dominant role in the reaction system, while •OH and1O2also made non-negligible contributions to CEF degradation. This work provides a new strategy for constructing composite catalysts based on carbon nanofiber-supported polymetallic MOFs.
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INORGANIC CHEMISTRY COMMUNICATIONS
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2026
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IF 5.9
Ying-hong La,Wen-jia Ha,Yong-hu Ma,Zhi-qiang Wu,Hong-jian Zhao
In this work, an S-scheme heterojunction photocatalyst composed of Fe-MOF-NH 2 -modified BiOCl (denoted as BFN) was successfully prepared via a one-step hydrothermal technique for the efficient photocatalytic (PC) decomposition of tetracycline hydrochloride (TC-HCl). The morphology, crystal structure, composition, specific surface area, and photoelectric characteristics of BFN were systematically characterized using multiple techniques. XRD patterns confirm the successful fabrication of Fe-MOF-NH 2 /BiOCl (BFN) heterostructures. Introducing Fe-MOF-NH 2 shrinks BiOCl lattices via partial replacement of Bi 3+ with smaller Fe 3+ , which further exposes more active BiOCl (110) facets. SEM images display BiOCl nanosheets evenly grown on spindle hexagonal Fe-MOF-NH 2 to create compact heterointerfaces. This structure optimizes pore configuration and light capture. Owing to its elaborate heterojunction and regulated crystal texture, BET data confirm the optimal BFN possesses a high specific surface area of 116.2 m 2 ‧g −1 . UV–vis DRS further verifies a 420 nm red shift in its light absorption edge. XPS and EPR analyses reveal that the oxygen vacancy concentration in the heterojunction is significantly increased, 3 and 8 times higher compared to those of Fe-MOF-NH 2 and BiOCl, respectively. The compact S-scheme heterojunction constructs a directional charge-carrier transfer pathway. This structure strongly suppresses photocarrier recombination while preserving robust redox potentials. Higher photocurrent density and lower EIS impedance jointly confirm accelerated charge separation. PC experiments demonstrate that the 70% BFN sample achieves markedly higher degradation efficiency for TC-HCl under Light-emitting diode (LED) lamp irradiation compared with the individual components, and the degradation process involves multiple reactive species, including h + , ·O 2 − , and ·OH. LC-MS analysis revealed three possible degradation pathways, and hydroponic toxicity tests using mung bean as the model plant confirmed that the TC-HCl degradation products exhibit substantially reduced biotoxicity and even exert a certain growth-promoting effect. This study unveils the quadruple synergism of extended light absorption, S-scheme carrier migration, abundant oxygen vacancies and enhanced surface adsorption, offering experimental and theoretical support for bismuth/MOF photocatalysts in antibiotic wastewater remediation and agricultural ecological protection.
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JOURNAL OF POWER SOURCES
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2026
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IF 8.4
Guichao Zhang,Beibei Li,Hua Ning,Jiaxin Li,Wenkang Liu,Lanlan Li,Xinghua Zhang,Xiaojing Yang,Xiaofei Yu,Zunming Lu
The sluggish oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) kinetics at the air cathode impede the performance of zinc-air batteries (ZABs). Although single-atom catalysts obtained from metal-organic frameworks (MOFs) exhibit impressive catalytic activities, metal species tend to aggregate during the pyrolysis, making it difficult to achieve highly dispersed atomic active sites. To address this issue, a dual-MOF strategy was employed to successfully synthesize Fe single-atom catalyst (Fe/NC-920) from ZIF-8@MIL-101(Fe)#20. During the pyrolysis, Zn volatilization from ZIF-8 generated anchoring sites, while Fe atoms from MIL-101(Fe) were stabilized at these sites, forming stable Fe-N 4 coordination. Due to the rich porous structure and the highly dispersed active sites, Fe/NC-920 exhibited superior OER (an overpotential of 310 mV at 10 mA cm −2 ) and ORR (a half-wave potential of 0.90 V) activities. Besides, the ZAB based on Fe/NC-920 demonstrated superior stability than the ZAB based on Pt/C + RuO 2 . This strategy provides a feasible approach for the development of effective ZAB catalysts.
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