Carbon Energy
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2026
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IF 24.2
Kaiming Li,Ben Huang,Aihao Xu,Kai Nie,Xianhai Bai,Qian Ning,Guodong Wang,Shiming Qiu,Huibing He,Yang Ren,Jing Xu,Xucai Yin
The inherent hydroxide-rich (OH⁻) environment in alkaline media facilitates the two-electron oxygen reduction reaction (2e − ORR). However, the strong interaction between alkali metal cations and solvated water molecules significantly reduces the connectivity of the hydrogen bond network within the alkaline electric double layer, thereby severely impeding rapid proton transport at the electrode surface. Herein, we rationally designed ZnO with oxygen vacancies-driven [Fe(CN) 6 ] 3− coordination (denoted as Fe(CN) 6 -ZnO-V O ) as an efficient 2e − ORR catalyst for H 2 O 2 electrosynthesis. We demonstrate that the locally coordinated [Fe(CN) 6 ] 3− establishes pathways for rapid proton transfer at the electrode surface by forming a hydrogen bond network with interfacial water molecules. Concurrently, this configuration significantly reduces the energy barrier of the *OOH intermediate. These synergistic effects collectively optimize the electrocatalytic performance for H 2 O 2 production under alkaline conditions. As expected, the Fe(CN) 6 -ZnO-V O delivers a significantly increased current density of 130 mA cm −2 that is much higher than ZnO (32 mA cm −2 ), as well as a superior H 2 O 2 production rate of 9.41 mol g cat −1 h −1 and a high faradaic efficiency of exceeds 90%. Our study highlights the crucial role of interfacial hydrogen-bonding connectivity and provides theoretical and technical guidance for developing reliable strategies to enhance the electrocatalytic properties of 2e − ORR.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
·
IF 21.1
Yuqing Feng,Hongxia Liu,Yongxing Shang,Yingsen Fang,Shumei Gao,Ping Sun,Bitao Xiong,Hui Wang,Hui Liu,Mingbao Feng
Single-atom catalysts (SACs) are an effective strategy for maximizing the efficiency and reducing the costs of advanced oxidation processes (AOPs). Herein, a novel SAC with Fe−N 3 C sites was synthesized for emerging periodate (PI)-based AOPs. The optimized catalyst demonstrates superior performance, achieving 100 % removal of diclofenac (DCF) within 20 min via predominant singlet oxygen ( 1 O 2 ). Compared to the Fe−N 4 configuration, the Fe−N 3 C site enables an unprecedented 152.9-fold increase in the pollutant degradation rate, surpassing most reported catalysts. Density functional theory (DFT) calculations reveal that the Fe−N 3 C sites reduce the oxophilicity of the Fe centers, thereby lowering the energy barrier for 1 O 2 desorption and promoting its preferential generation. The DCF degradation pathway was further elucidated by Fukui constants. Furthermore, the Fe−N 3 C/PI system exhibits excellent stability with negligible leaching of Fe ions and strong resistance to common wastewater components. This work provides new insights into the design of efficient SACs and the construction of PI-based AOPs for water decontamination.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2014
·Vol. 39
·期 28
·16179-16186
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IF 2.93
Hao Wang,Fengxiang Yin,Guoru Li,Biaohua Chen,Zhiqing Wang
A mixed metal–ion metal–organic framework (MOF(Fe/Co)) was synthesized by a hydrothermal process using ferric and cobalt salts as the metal–ion precursors and trimesic acid as the organic ligand. The structure of the as-prepared MOF(Fe/Co) was characterized by X-ray diffraction (XRD), N 2 adsorption–desorption, transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and thermogravimetry/differential thermogravimetry (TG/DTG). The bifunctional catalytic activities of MOF(Fe/Co) toward the oxygen evolution reaction (OER) and the oxygen reduction reaction (ORR) in alkaline electrolyte were investigated by cyclic voltammetry (CV) and linear sweep voltammetry (LSV). The results demonstrate that the as-prepared MOF(Fe/Co) has a good crystalline structure with abundant micropores , a high specific surface area and a high thermal stability. The MOF(Fe/Co) exhibits excellent bifunctional catalytic activities for OER and ORR. The high specific surface area and abundant micropores are beneficial for oxygen diffusion and catalytic sites utilization in the catalyst, which is favorable for the OER and ORR. The RDE results for MOF(Fe/Co)-catalyzed ORR indicate that the two-electron pathway was preferred at relatively positive potentials, whereas the four-electron pathway gradually dominated at more negative potentials.
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高影响因子
Journal of Energy Chemistry
·
2020
·
IF 7.216
Xiaojing Jiang,Jianian Chen,Fenglei Lyu,Chen Cheng,Qixuan Zhong,Xuchun Wang,Ayaz Mahsud,Liang Zhang,Qiao Zhang
Controllable fabrication of Fe-N-C based single-atom catalysts (SACs) for enhanced electrocatalytic performance is highly desirable but still challenging. Here, an in situ surface-confined strategy was demonstrated for the synthesis of single atomic Fe-N 4 on N-doped carbon nanoleaves (L-FeNC). The in situ generated Zn 3 [Fe(CN) 6 ] 2 could not only serve as a protection layer against collapse of nanoleaves but also provide abundant Fe source for the formation of Fe-N moieties during pyrolysis, leading to high surface area and high graphitization degree of L-FeNC simultaneously. Benefiting from abundant Fe-N 4 active sites, enhanced mass and charge transfer, the as-prepared L-FeNC manifested a half-wave potential of 0.89 V for oxygen reduction reaction (ORR) in 0.1 M KOH. A maximum power density of 140 mW cm −2 and stable discharge voltage even after operation for 50,000 s have been demonstrated when the L-FeNC was used as air cathode for Zn-air battery. This work not only provided a unique surface-confined strategy for the synthesis of two-dimensional nanocarbons, but also demonstrated the significant benefit from rational design and engineering of Fe-N-C SACs, thus offering great opportunities for fabrication of efficient energy conversion and storage devices.
研究领域:
材料科学
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电化学
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能源存储与转换
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纳米科技
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催化化学
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高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
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2012
·Vol. 16
·期 12
·3783-3790
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IF 2.131
Dong Jing,Liu Tao,Meng Xiaomeng,Zhu Jianying,Shang Kun,Ai Shiyun,Cui Shenglong
A new method based on specific binding between glycoprotein acetylcholinesterase and boronic acid-functionalized Fe@Au magnetic nanoparticles was presented for the development of acetylcholinesterase biosensor. Alginate–graphene composite-modified electrode was firstly prepared as the substrate. Then, biocompatible boronic acid-functionalized Fe@Au magnetic nanoparticles were anchored by the covalence between the cis -diol of alginate and the boronic acid group on Fe@Au nanoparticles. Acetylcholinesterase was subsequently immobilized via the bonding between the glycosyl of acetylcholinesterase and the boronic acid group. The immobilized enzyme retained relatively high bioactivity and the fabricated biosensor exhibited high sensitivity and fast response to acetylthiocholine chloride. Based on enzyme inhibition, carbamate pesticide was detected using Furadan as a model compound. Two linear ranges of 0.05–15 and 15–400 ppb were obtained with a detection limit of 0.01 ppb. The biosensor also showed acceptable reproducibility and relatively good storage stability. Moreover, satisfactory results were obtained in the real sample analysis.
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高影响因子
Environmental Science-Nano
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2026
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IF 5.1
Shiyi Tu,Wenpeng Li,Yangyang Xu,Li Gan,Xiulan Weng,Zuliang Chen
The increasing release of antimony (Sb) into water environments due to anthropogenic activities poses significant ecological risks. This study developed a novel hybrid material, zeolitic imidazolate framework-8-iron nanoparticles (ZIF-8-Fe NPs), which demonstrates a synergistic adsorption-oxidation mechanism for efficient removal of Sb(III) from aqueous solutions. Major findings reveal that at an initial Sb(III) concentration of 1 mg L-1, ZIF-8-Fe NPs achieved a 73.3% removal efficiency within three hours through the dual processes of direct adsorption and oxidation of Sb(III) to Sb(V). Scanning electron microscopy-energy dispersive spectrometry (SEM-EDS), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS) revealed that the removal mechanism involved both direct adsorption of Sb(III) by ZIF-8-Fe NPs and oxidation of Sb(III) to Sb(V), with two distinct morphologies of Sb adsorbed on the surface. The formation of covalent bonds (Zn-OH-Sb and Fe-O-Sb) was identified as the key factor in removing both Sb(III) and Sb(V) from aqueous solutions. The adsorption process conformed to the Langmuir adsorption isotherm and pseudo-second-order kinetics, with correlation coefficients (R²) of 0.959 and 0.999, respectively. The proposed mechanism suggests that the formation of Zn-OH-Sb and Fe-O-Sb covalent bonds plays a crucial role in Sb(III) removal. Significantly, ZIF-8-Fe NPs achieved removal efficiencies of 91.5% and 94.8% for Sb(III) at environmentally relevant concentrations of 100 µg L-1 and 20 µg L-1, in actual mining wastewater, demonstrating its practical applicability. This study establishes that ZIF-8-Fe NPs constitute an effective nanomaterial with significant potential for Sb(III) remediation in wastewater.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Liwei Ma,Heting Li,Shaonan Shan,Yanqing Qin,Xu Yang,Guoqiang Li,Guojie Zhang
Wet Fe(II)EDTA complexation is a promising technology for NO removal, but its practical application is severely hindered by O 2 -induced oxidation of Fe(II)EDTA and inefficient regeneration of Fe(II)EDTA–NO. Herein, an oxygen-vacancy-rich BiOCl/g-C 3 N 4 S-scheme heterojunction with interfacial Bi–O–C covalent bonds was constructed for oxygen-resistant photocatalytic–complexation denitrification. Structural characterizations and density functional theory calculations confirmed that Bi–O–C bonds served as atomic-level charge-transfer channels, strengthening interfacial coupling and promoting directional S-scheme charge separation. This configuration preserved strongly reductive electrons on g-C 3 N 4 for the reduction of Fe( III )EDTA and Fe(II)EDTA–NO, while retaining oxidative holes on BiOCl. Meanwhile, oxygen vacancies on BiOCl acted as preferential O 2 adsorption and activation sites, converting O 2 into ·O 2 − and thereby transforming O 2 from a competitive oxidant into an electron-buffering species that suppresses BiOCl photocorrosion and regulates interfacial redox cycling. The optimized 20BCN–Fe( II )EDTA system achieved an average NO removal efficiency of 88.92% under 14% O 2 and maintained above 80.02% efficiency after 30 cycles. Product analysis revealed a reduction-dominated NO conversion pathway, with NH 4 + and N 2 as the major reduced nitrogen products, a total reduced-product selectivity of 91.9%, and a nitrogen recovery of 94.4%. Kinetic analysis confirmed that NO absorption proceeded in a fast reaction regime enhanced by interfacial redox reactions. This work provides an atomic-level strategy for designing oxygen-resistant photocatalytic systems for wet denitrification under realistic flue-gas conditions.
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JOURNAL OF NANOPARTICLE RESEARCH
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2026
·Vol. 28
·期 8
·216
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IF 3.5
Liu Sinan,Wang Li,Lü Fulin,Yang Shuzhen
Fusarium graminearum is a pathogenic fungus responsible for significant plant diseases. To combat infections caused by this pathogen, we designed a pH-responsive nano-pesticide thiabendazole@MIL-101(Fe). Through systematic optimization of the loading parameters, the optimal preparation conditions were determined as follows: the thiabendazole solution concentration was 3 mg/mL, the amount of carrier used was 0.0400 g, and the loading time was 6 h. Structural characterization revealed that MIL-101(Fe) possesses a uniform octahedral structure with a smooth surface. Thiabendazole was successfully loaded into its pores without damaging the crystal structure of MIL-101(Fe). Regarding release behavior, thiabendazole@MIL-101(Fe) exhibited significant pH-responsive characteristics. After 238 h, the cumulative release rate of thiabendazole reached 74.08% at pH = 5.0, while the cumulative release rates at pH = 7.0 and 9.0 were 62.17% and 57.22%, respectively. The release kinetics study showed that the release process of thiabendazole@MIL-101(Fe) followed a first-order model. Furthermore, Ritger-Peppas model fitting suggested that the release mechanism is consistent with Fickian diffusion across pH = 5.0, 7.0, and 9.0. The prepared thiabendazole@MIL-101(Fe) displayed antibacterial activity comparable to that of conventional SC Thi and exhibited no adverse effects on wheat seed germination or seedling growth. This study provides new ideas and methods for the development of efficient and environmentally friendly nano-pesticides.
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高影响因子
ACS Sustainable Chemistry & Engineering
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2026
·Vol. 14
·期 28
·12821-12832
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IF 7.6
Chen Yuhan,Xie Haiyang,Wu Yubo,Luo Jiangxue,Zhan Tianren,Zhang Yanjuan,Huang Zuqiang,Hu Huayu,Gan Tao
Developing highly efficient Fe-based single-atom catalysts (SACs) for the selective oxidation of C–H bonds to produce value-added aromatic ketones under mild conditions is still challenging. Herein, the construction of amphiphilic Fe SACs with electron-deficient Fe–S 2 O 2 structure supported on porous S-doped lignin-derived carbon (Fe 1 /SLC) was achieved using a ball milling combined with an impregnation method. Due to the synergistic interaction between electron-deficient Fe–S 2 O 2 sites and ethylbenzene (EB)–water microinterfacial effects, Fe 1 /SLC markedly enhanced the catalytic activity and acetophenone (AP) selectivity for the selective oxidation of EB to AP under 60 ° C for 12 h, obtaining an AP selectivity of 99.1% at 99.0% EB conversion and a high turnover frequency (TOF) of 2422.3 mmol EB g Fe –1 h –1 , which were much higher than those of the control catalyts (Fe 1 /LC and Fe NPs /SLC), surpassing most reported catalysts in similar reaction system. The electron-deficient Fe–S 2 O 2 sites were conducive to the cleavage of TBHP to generate 1 O 2 , • O 2 – , and • OH radicals, wherein • O 2 – was dominant, while 1 O 2 and • OH performed a secondary role. Meanwhile, the density functional theory calculations revealed that the amphiphilic property of Fe 1 /SLC induced by the C–SO x –C structure heightened the catalytic activity and AP selectivity, which originated from the unique interfacial hydrogen-bonding interactions and adsorption energy gradients. Furthermore, Fe 1 /SLC showed excellent recyclability, long-term storage stability, and satisfactory universality. This work provides a promising strategy to simultaneously improve the catalytic activity and aromatic ketones selectivity of the selective oxidation of C–H bonds.
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高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
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2026
·
IF 5.9
Qiwei Zhong,Yueyang Liu,Jiayu Song,Yuchao Cui,Haozhe Li,Li Zhao
Fe/Ti co-doping converts the P2 phase to the OP4 phase and suppresses the undesirable P2-O2 phase transition. • Fe/Ti co-doping breaks the Na + /vacancy ordering and improves sodium ion transport capability. • Ti doping can shorten the TM-O bonds and lengthen the Na-O bonds. P2-type Na 2/3 Ni 1/3 Mn 2/3 O 2 is regarded as a promising cathode material for sodium-ion batteries owing to its high specific capacity and low cost. Nevertheless, its practical application is hindered by irreversible structural degradation and rapid capacity decay associated with the detrimental P2–O2 phase transition during deep Na + extraction. In this work, Fe and Ti are co-incorporated into Na 2/3 Ni 1/3 Mn 2/3 O 2 via a sol-gel method to enhance structural stability. Rietveld refinement of X-ray diffraction (XRD) patterns indicates that Ti doping shortens TM–O bonds and enlarges Na + diffusion channels by increasing Na-O distances, thereby enhancing structural stability and Na + transport kinetics. In situ XRD analyses reveal that Fe/Ti co-doping regulates the phase transition pathway from the irreversible P2–O2 phase transition to a reversible P2–OP4 phase transition, effectively mitigating structural degradation during cycling. Electrochemical measurements demonstrate that optimized Fe/Ti co-doping enhances the overall electrochemical performance. The optimized composition, Na 2/3 Ni 1/4 Fe 1/12 Mn 7/12 Ti 1/12 O 2 , exhibits excellent cycling stability with a capacity retention of 82.33% after 50 cycles at 0.2 C, and delivers a specific capacity of 61.43 mA h g −1 at a high rate of 5 C. This study demonstrates that the combination of sol-gel synthesis and co-doping engineering provides an effective strategy for designing high-performance cathode materials for sodium-ion batteries.
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MINERALS ENGINEERING
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2026
·
IF 6
Zhelin Liu,Dan Liu,Zhipeng Liu,Mingyan An,Luyi Xu,Bingduo Xing,Shuming Wen
Using Fe 3+ enhanced the inhibitory effect of MA on calcite. • Fe 3+ adsorbs on calcite CO 3 2– sites, providing new sites for MA adsorption. • A novel, efficient, and eco-friendly inhibitor based on the Fe–MA complex was proposed. Due to the similar surface properties of fluorite and calcite, selective adsorption of collectors remains a challenge in their separation. In this study, a novel composite inhibition system using Fe 3+ -enhanced Malic acid (MA) was developed to selectively suppress calcite by regulating interface coordination interactions. A systematic investigation was conducted through flotation tests, contact angle measurements, molecular dynamics simulations, and surface analysis (FTIR, ToF-SIMS, XPS). Micro-flotation results showed that the recovery of calcite decreased from 64.67% to 8.75% with the addition of Fe 3+ , while the fluorite recovery remained above 92%, indicating significant enhancement in selectivity. Contact angle and molecular dynamics simulations revealed that the Fe–MA complexes markedly increased the hydrophilicity of calcite surfaces. FTIR and ToF-SIMS confirmed the presence of carboxyl groups (–COOH) and iron species (FeO – , FeOH – ) on calcite surfaces, indicating Fe–MA complex adsorption. XPS and DFT results demonstrated that MA adsorbs onto calcite via weak Ca–O bonds, and Fe promotes multi-site adsorption through Fe–O bonds, strengthening the adsorption and enhancing separation efficiency. This study highlights a cooperative coordination mechanism between metal ions and small organic acids, offering a novel strategy for designing low-dose, highly selective green inhibitors for calcium minerals.
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FOOD CHEMISTRY
·
2026
·
IF 10.4
Bo Zhao,Xiuxian Mo,Jiayao Wang,Akang Dan,Tong Chen,Dan Ouyang,Xiaopeng Hu
Dual-mode sensor integrates fluorescence/colorimetric detection for cross-validated acetamiprid monitoring. • Synergistic recognition by MIP and aptamer enhances specificity in complex food matrices. • The MIL-88B (Fe) was used as a dual-signal probe triggered by PPi. • The integration of smartphone-based colorimetric readout and machine learning enhances field applicability. • Achieves ultra-sensitive detection with high recovery in real samples. This work presents a smartphone-integrated, fluorescence/colorimetric dual-mode sensing platform that combines fluorescence and colorimetric detection with support vector regression (SVR) for monitoring of acetamiprid in food. The system employs a sandwich-structured mechanism using MIPs/Fe 3 O 4 as capture probes and aptamer-functionalized MIL-88B(Fe) as bifunctional signal probes. Uniquely, pyrophosphate (PPi) triggers the disassembly of MIL-88B(Fe), synchronously releasing fluorescent 2-aminoterephthalic acid ligands and Fe 3+ ions, which subsequently catalyze Prussian blue formation for colorimetric readout. Furthermore, the integration of smartphone imaging and a SVR mode allows for intelligent translation of RGB color features into precise acetamiprid concentrations, facilitating rapid analysis. The biosensor demonstrates exceptional performance with detection limits of 41.0 pg mL −1 (fluorescence) and 45.0 pg mL −1 (colorimetric), maintaining high specificity in complex matrices. Successful application in fruit and vegetable extracts confirmed its practical utility, offering a sensitive, cross-validation, and field-deployable strategy for food safety monitoring. Download: Download high-res image (176KB) Download: Download full-size image
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高影响因子
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