APPLIED CATALYSIS A-GENERAL
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2026
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IF 4.8
Jing Li,Fan Zhang,Peng Zhang,Guowei Niu,Shanshan Liu,Huichuang Guo,Fei Wang,Qiang Chang,Hong Wang,Chenghua Zhang,Yong Yang,Yongwang Li
Si 3 N 4 is proposed as a precursor to construct Fe-Si interactions in FTS catalysts. • Fe/Si 3 N 4 catalyst exhibits stronger Fe-Si interaction and higher Fe 2 SiO 4 content than Fe/SiO 2 . • The formation of Fe 2 SiO 4 stabilizes Fe species and suppresses the formation of Fe 3 O 4 . • Preventing the formation of Fe 3 O 4 makes for decreasing CO 2 selectivity and WGS activity. Precise control over the metal-support interfacial structure plays a critical role in enhancing the activity and selectivity of iron-based catalysts for syngas conversion. Using silicon nitride as the starting precursor of silicon support, a series of SiN x O y supports with different oxidation degree were constructed via controlled oxidation under air, enabling modulation of the Fe-Si interfacial environment. A systematic comparison between silicon nitride-derived supports and conventional silica support revealed significant differences in structural evolution and catalytic behavior of iron catalysts. Spectroscopic characterizations including FTIR, solid-state NMR, XPS, XRD, and Mössbauer spectroscopy demonstrated that the unique interfacial structure formed during the oxidation of Si 3 N 4 stabilizes the active iron species (carbides) and suppresses the formation of undesired phases (Fe 3 O 4 ), thereby reducing CO 2 selectivity. These findings underscore the critical influence of support precursors on interfacial chemistry and reaction pathways, providing new insights and strategies for the rational design of Fe-based catalysts. Download: Download high-res image (76KB) Download: Download full-size image
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FIBERS AND POLYMERS
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2026
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IF 3.1
Liu Xing,Li Wanying,Li Guoxing,Li Ting-Ting,Lou Ching-Wen,Lin Yan-Yu
Dopamine (DA) abnormality is closely linked to Parkinson’s and other neurodegenerative diseases. Establishing a sensitive and highly selective DA detection platform holds significant importance for clinical diagnosis and disease prevention. This study successfully prepared Fe–BiVO 4 /BiOCl-CF/FeOOH flexible composite electrode based on carbon fiber fabric (CF) substrates via electrospinning, hydrothermal synthesis and impregnation-in situ growth methods. Corresponding photoelectrochemical (PEC) sensors were constructed for quantitative DA detection. The Fe–BiVO 4 /BiOCl heterojunction significantly suppressed photogenerated carrier recombination. FeOOH, functioning as the hole transport layer, further optimized charge separation efficiency, while the three-dimensional porous structure of CF shortened the electron transport path and reduced electrical resistance. The constructed PEC sensor exhibits favorable sensing performance for DA in 0.1 M phosphate buffer (pH = 7.0). Within the concentration range of 1–40 μM, the photocurrent response shows an excellent linear correlation with DA concentration (R 2 = 0.99446), and the detection limit is determined to be 0.038 μM (3σ/S). Moreover, the sensor exhibits negligible interference from common coexisting substances and retains over 80% of its initial photocurrent efficiency after 11 days of continuous operation, demonstrating satisfactory selectivity and stability. This work provides a feasible strategy for constructing highly sensitive, portable PEC sensors for DA detection. Graphical
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ANALYTICA CHIMICA ACTA
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2026
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IF 6.1
Peng Zhao,Kai Liu,Yueyan Li,Xiaofang Ban,Yuheng Wu,Jiaqi Liu,Xiaohong Wu,Ziyi Cheng,Fan Wang,Shuo Li,Feng Lin,Huifang Tang,Qingnan Zhao
The excessive activation of sympathetic nerve is closely related to cardiovascular diseases (CVDs). In this study, we developed a novel MIL-100(Fe)@Ag surface-enhanced Raman scattering (SERS) substrate for the simultaneous and effective detection of plasma norepinephrine (NE) and adenosine—two pivotal sympathetic hormones. The microscopic morphology and crystal structure of the substrate were characterized using techniques such as transmission electron microscope (TEM) and X-ray diffraction (XRD). Mechanistically, the HOMO-LUMO energy levels of the detection molecules were calculated using Gaussian. The substrate realized a dual SERS enhancement mechanism through the synergistic effect of localized surface plasmon resonance and interfacial charge transfer. Consequently, the MIL-100(Fe)@Ag platform exhibited high-sensitivity quantitative detection capabilities for NE and adenosine: the detection limit for NE is 0.596 nmol/L; the detection limit for adenosine is 0.24 nmol/L. Crucially, when applied to patients with pheochromocytoma—a neuroendocrine tumor characterized by plasma catecholamine surges, this method achieved robust and stable detection of plasma NE. It offered comparable diagnostic accuracy to conventional mass spectrometry while significantly reducing analysis complexity. Therefore, this innovative strategy may hold great promise for the long-term, decentralized monitoring of sympathetic nerve activity in populations at risk for CVDs or related clinical disorders.
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Nature Communications
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2026
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IF 18.1
Lv Guoliang,Zhang Linjuan,Luo Yuanyuan,Zhu Jianqiu,Wu Jilong,Qin Li,Zhang Yanlin,Zhang Zheng,Tan Pengwei,Duan Guotao
Simultaneously achieving chemiresistive gas sensors with high selectivity, sensitivity, and stability remains a significant challenge. In this study, inspired by the H 2 S-specific catalytic enzymes in biological systems, we construct an amorphous unsaturated-ligand MIL-68(Fe) 3D MOF via in situ thermal induction. Without the introduction of extrinsic catalytic or conductive components, this MOF modification strategy creates unsaturated Fe atoms within the framework itself. These atoms function dually as catalytic and conductive sites, thereby overcoming the inherent low conductivity of conventional 3D MOFs and enabling the direct construction of chemiresistive sensor for room-temperature molecular olfactory sensing. The targeted water-adsorption-coordinated catalytic mechanism bypasses the limitations of traditional oxygen adsorption processes to achieve unprecedented comprehensive performance, including fingerprint-level selectivity (against 29 interfering gases), superior sensitivity coefficient (~83/ppm), ultra-low measured lower limit (1 ppb), rapid gas sensing response/recovery characteristics (~30 s/73 s), and excellent long-term stability at room temperature.
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PHYSICAL CHEMISTRY CHEMICAL PHYSICS
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2026
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IF 3
Wenya Huo,Yike Kuang,Zhendong Sha,Jun Ding
p-Nitrophenol (p-NP) is a toxic and persistent pollutant commonly found in industrial wastewater, necessitating efficient and economically viable treatment strategies. In this work, we develop a low-cost and high-performance catalyst consisting of Fe-Cu-Cr mixed metal oxides supported on activated carbon (AC), synthesized through a simple impregnation-calcination method and applied for peroxymonosulfate (PMS) activation.Systematic optimization of preparation parameters revealed that HCl pretreatment of activated carbon, a ternary Fe-Cu-Cr composition, a 20 wt% metal loading, and calcination at 600 °C yield the highest catalytic activity, achieving p-NP degradation with Ct/C₀ ≈ 0.25 after 4 h. Notably, the total treatment cost can be maintained below 30 CNY per ton of wastewater, demonstrating a substantial economic advantage over reported catalytic systems. Mechanistic studies show that p-NP degradation follows a synergistic adsorption-catalysis pathway, wherein activated carbon enriches p-NP at the catalyst surface and multivalent metal oxides efficiently activate PMS to generate reactive oxygen species, primarily •OH. This work introduces a practical, scalable, and cost-effective catalyst design using earth-abundant metals, offering a promising avenue
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Tao Liu,Yan Zeng,Tao Ma,Feng Liang
Antibiotic contamination in aquatic environments poses increasing environmental and health risks, calling for efficient and sustainable remediation strategies. In this work, a metal organic framework (MOF)-mediated approach is developed to construct iron-doped carbon nitride (CN) nanotubes (Fe-CN-X, X = 0, 65, 135, 200, 270) using MIL-88A(Fe) as both an iron source and a structure-directing precursor. By regulating the amount of MIL-88A(Fe), the Fe content and structural properties of the Fe-CN-X can be precisely tuned, leading to the formation of surface-porous nanotubular structures with well-dispersed active sites. Among the prepared samples, Fe-CN-135 exhibits an optimal combination of visible-light absorption, charge separation efficiency, and surface characteristics. Under visible-light irradiation in a H 2 O 2 -assisted photocatalytic system, Fe-CN-135 achieves 99.3% degradation of tetracycline (TC) within 40 min, with a pseudo-first-order rate constant of 0.1106 min −1 . Mechanistic investigations reveal that Fe incorporation narrows the bandgap, suppresses electron-hole recombination, and promotes Fe 3+ /Fe 2+ redox cycling, leading to a • OH-dominated oxidation pathway. The catalyst also demonstrates excellent stability and effectiveness toward multiple organic pollutants. This work provides a practical and scalable strategy for designing Fe-doped CN photocatalysts through MOF-mediation and offers a unique insight for the efficient degradation of organic pollutants.
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Inorganics
·
2026
·Vol. 14
·期 3
·88
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IF 3.4
Naifeng Chen,Yi Li,Chenxia Gao,Chao Xue,Shuang Liu,Jinghang Li,Xi Cao,Kuilin Lv,Yuguang Lv
This study systematically investigated the characterization of 2Fe-CDs/12Mn-CeO2composites and the colorimetric sensing properties of H2O2, glucose (Glu), and glutathione (GSH). The morphology, structure, and optical properties of the 2Fe-CDs/12Mn-CeO2composite were analyzed in detail by XRD, FT-IR, SEM, TEM, XPS, and Raman spectroscopy, and its formation was supported by multiple complementary characterization techniques. The catalytic efficiency (kcat/Km) of the nanozyme is 152-fold higher than natural HRP under optimal conditions and remains 59-fold higher even after temperature normalization to 25 °C. In the colorimetric sensing experiments, the detection limits of Fe-CDs/Mn-CeO2were 0.21 μM, 2.7 μM, and 0.63 μM for H2O2, Glu, and GSH, respectively. Rapid and accurate determination of the concentrations of these biomolecules can be achieved by observing the color changes after Fe-CDs/Mn-CeO2reaction with the objects to be measured. The experimental results show that Fe-CDs/Mn-CeO2have high sensitivity and selectivity for H2O2, Glu, and GSH, which provides a solid theoretical and experimental basis for the application of Fe-CDs/Mn-CeO2in the field of biosensing and medical diagnosis.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Yuan-Yuan Feng,Hua-Shuai Hu,Jin Liu,Zi-Heng Liu,Dan Zhang,Dong-Xing Tan
● S,Fe-NiFeO x H y /NF shows an ultra-low OER overpotential of 305 mV at 1000 mA cm −2 . ● The catalyst exhibits a promising stability for over 40 h without activity decay. ● The total preparation process of S,Fe-NiFeO x H y /NF electrocatalyst only takes 6 min. ● The high performance stems from electronic interactions among S, Fe and NiFeO x H y . Water electrolysis is considered an ideal route for producing high-purity hydrogen, yet its widespread application remains severely constrained by the anodic sluggish oxygen evolution reaction (OER). Herein, we present a high-performance S,Fe-NiFeO x H y /NF electrocatalyst for OER that markedly reduces the overpotential of OER to 196 mV at the benchmark current density of 10 mA cm −2 . Even at high current densities of 500 and 1000 mA cm −2 , the overpotentials are only 291 and 305 mV, respectively, outperforming most previously reported Ni/Fe-based catalysts. The catalyst also exhibits promising long-term stability, maintaining a high current density of 500 mA cm −2 for over 40 h without activity decay. Notably, the entire catalyst preparation takes just 6 min, and this cost-effective and facile synthetic strategy is key to enabling practical water electrolysis. Our findings open up a new avenue for developing non-noble metal catalysts with both high activity and durability for water electrolysis. Download: Download high-res image (267KB) Download: Download full-size image
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Xinyu Wang,Xiaoyue Wang,Xiaowei Song,Wen Chen,Guojun Yuan,Xu Yu,Junwei Wang,Lili Ren
Atomic Ce-Fe dyad in Ni 3 S 2 enables kinetic-stability synergy for urea electrolysis. • Low cell voltage of 1.37 V at 100 mA·cm −2 with over 510 h durability. • Operando Raman, XAFS and DFT reveal optimized Ni-S bond and d -band center. Replacing the energy-intensive oxygen evolution reaction (OER) with the urea oxidation reaction (UOR) presents a promising route for energy-saving hydrogen production coupled with wastewater remediation. However, developing electrocatalysts that simultaneously achieve high activity and long-term stability remains a formidable challenge. Herein, we propose and validate a novel “kinetic-structural synergy” design principle by constructing atomic-scale Ce-Fe binary catalytic unit within Ni 3 S 2 nanoarrays. Unlike random doping, this defined architecture enables a functional division of labor. The Fe site acts as a kinetic promoter to dramatically lower the potential for active NiOOH phase formation, while the adjacent Ce site functions as a structural and electronic stabilizer, securing the high-valent Ni intermediates. The resulting catalyst achieves an ultra-low UOR potential. When configured in a two-electrode urea electrolyzer, it requires only 1.37 V to deliver 100 mA·cm −2 current density and maintains remarkable stability for over 510 h. In situ Raman spectroscopy directly evidences the earliest formation and exceptional persistence of the NiOOH phase on this catalyst. Combined X-ray absorption fine structure (XAFS) analysis and density functional theory (DFT) calculations elucidate from the atomic-level principle that the Fe-Ce unit cooperatively tunes the local coordination and electronic structure of Ni, leading to an optimal Ni-S bond length and a favorable d -band center of Ni site, collectively facilitating the reaction pathway. This work demonstrates that targeted lanthanide-transition metal pairing can create integrated catalytic units where activity and stability are inherently coupled, providing a new design strategy for advanced energy conversion systems. Download: Download high-res image (166KB) Download: Download full-size image The successful doping of Ce and Fe asymmetric metals to form the Fe-S-Ni-S-Ce catalytic chain alters the bond length/strength of the original Ni-S bond, promoting the formation of high-valent nickel species while enhancing their stability at high oxidation potentials, ultimately achieving a balance between high activity and long-term operation in the urea oxidation process.
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Journal of Environmental Chemical Engineering
·
2025
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IF 7.2
Zhenhua Xin,Renjie Chen,Chuanjin Lin,Bin Dong,Zuxin Xu
The aggregation and separation of magnetic biochar (MBC) are the bottlenecks in its application for the removal of hexavalent chromium (Cr(VI)) from aquatic media. To solve this problem, MBC and Fe(II)–sodium alginate (SA) hydrogel were combined to form SA–Fe(II)–MBC beads (SA–Fe–C), which were used for Cr(VI) removal and immobilization from aqueous solutions. SEM and XPS revealed that the 3D network structure of SA–Fe(II) hydrogel effectively prevented the aggregation of MBC. The experimental maximum Cr(VI) removal capacity of SA–Fe–C beads was 30.03 mg/g at pH 4. The spontaneous process of Cr(VI) removal by SA–Fe–C beads was best described by a pseudo-second-order model and dominated by chemical adsorption. Toxicity characteristic leaching procedure extraction showed that SA–Fe–C beads exhibited excellent immobilization capacity for Cr. The mechanism whereby SA–Fe–C beads removed and immobilized Cr(VI) from solution was found to involve: (1) adsorption, (2) reduction of Cr(VI) to trivalent chromium (Cr(III)) by Fe(II) and hydroxyl groups, and (3) co-precipitation of Cr(III) with Fe(II) to form chromite. In addition, the beads demonstrated excellent regeneration capability and reusability, showing promising potential for heavy metal removal from contaminated water.
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Journal of Thermal Science
·
2025
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IF 2.6
Yu Hao,Wang Weiran,Bian Zhiguo,Ma Xiaotong,Lu Xiao,Chang Long,Zhang Wan
The modification with dark metallic oxide is identified as the crucial strategy to enhance optical absorptions of calcium-based materials for the direct solar-driven thermochemical energy storage. The effect of modification on the heat release behavior in carbonation of calcium-based material has been widely investigated, but its effect on the heat storage behavior in calcination is lacking of sufficient research, typically for low-cost calcium resource such as carbide slag. The Fe-modified and Mn-modified carbide slags for CaCO 3 /CaO heat storage were synthesized and their optimum decomposition temperatures, effective heat storage conversions, heat flows and heat storage rates in endothermic stage were investigated. Although the Fe modification exacerbates the CaO sintering due to the formation of Ca 2 Fe 2 O 5 , that is still effective in reducing the regeneration temperature of CaO in CaCO 3 /CaO cycles. The Mn modification enhances significantly sintering resistance by forming the CaMnO 3 and its transformation into Ca 2 MnO 4 . The effective heat storage conversion of Mn-modified carbide slag after 30 cycles is 3.2 times as high as that of untreated carbide slag. Mn-modified carbide slag exhibits the lowest regeneration temperature and the highest heat storage rate after cycles. The loose and stable porous structure of Mn-modified carbide slag contributes to its superior endothermic performance. Therefore, Mn-modified carbide slag seems to be the potential candidate for calcium looping thermochemical heat storage.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
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IF 8.3
Ruxing Gao,Xixi Chen,Chao Deng,Lujing Xu,Leiyu Zhang,Chundong Zhang,Ki-Won Jun,Tiansheng Zhao,Yingju Yang
Catalytic hydrogenation of CO 2 into light olefins has gained increasing attention, nevertheless the design of an efficient catalyst with high selectivity towards light olefins is still challenging. Herein, aiming at improving the selectivity of targeted light olefins, we successfully synthesized a series of Na/MFe 2 O 4 (M = Co, Zn and Cu) spinel catalysts via hydrothermal synthesis, and tried to establish their activity-structure relationship. Among the Na/MFe 2 O 4 spinel catalysts, the Na/CoFe 2 O 4 catalyst shows superior catalytic performance, thanks to the well-crystallized CoFe 2 O 4 nanoparticle which has the good dispersibility, reducibility and carburizing ability. Moreover, compared with the traditional Na/Fe–Co catalyst obtained via co-precipitation, the formation of CoFe 2 O 4 with uniform crystal phase and smaller crystal size for Na/CoFe 2 O 4 spinel catalyst is more conducive to the formation of active and stable χ-(Co x Fe 1 − x ) 5 C 2 alloy carbide, thereby resulting in excellent catalytic activity and stability. On this basis, to further improve the C 2-4 = selectivity, we coupled the Na/CoFe 2 O 4 component with acidic zeolites (e.g., SAPO-34, MOR and Hβ), and the Na/CoFe 2 O 4 @SAPO-34 catalyst is found to possess a superior C 2-4 = selectivity of 42 % with a CO 2 conversion of 39 %. This work can provide a useful understanding of designing efficient spinel-structured bimetal catalysts for selective conversion of CO 2 into value-added light olefins.
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