Journal of Materials Chemistry A
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2026
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IF 9.2
Chunlin Ke,Siyu Song,Shenghao Li,Fengliang Wang,Ruiqi Fang,Xin Zhao,Chao Wang
High-entropy alloys (HEAs) offer immense potential for catalytic transformations, yet they suffer from severe sintering and limited active site accessibility due to their typically dense architectures. Herein, we present a facile molten salt-assisted pyrolysis strategy to confine quinary CoNiCuPtPd HEA nanoparticles within a metal–organic framework (MOF)-derived support. By using UiO-66-NH2 as a precursor, the introduced amino groups are transformed into pyridinic nitrogen sites during pyrolysis, which, along with the abundant oxygen vacancies generated in the ZrO2 phase, creates a robust porous support UNH-730. Comprehensive characterization studies (XPS and H2-TPR) confirm that the pyridinic N sites strongly anchor the metal species, facilitating the formation of homogeneously dispersed HEA nanoparticles (∼15 nm) and preventing agglomeration. In situ DRIFTS and catalytic evaluation reveal a synergistic mechanism: basic N sites and oxygen vacancies significantly enhance CO2 adsorption/activation, while the HEA sites promote H2 dissociation. Crucially, we demonstrate that light irradiation functions purely as a thermal source rather than triggering photogenerated electron–hole pairs. Consequently, the optimal CoNiCuPtPd@UNH-730 catalyst delivers a remarkable CH4 yield of 228.36 mmol g−1 h−1 with 77.8% selectivity at 550 °C under photothermal conditions substantially outperforming the ligand-free counterpart. This work establishes a novel paradigm for stabilizing multi-metal HEAs on functionalized porous carbon/oxide composites for energy conversion applications.
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MICROCHEMICAL JOURNAL
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2026
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IF 5.2
Yifan Zhu,Renjie Wang,Mengyao Ma,Hanyu Ji,Jinnan Gan,Xudong Song,Huijuan Ran,Qianqian Chen,Qiaohan Cheng,Hongyu Zhu,Qingsong Zhu
Uric acid (UA) concentrations serve as pivotal health indicators. This study developed a novel carbon paper (CP) and Fe-MOF composite and utilized it as an efficient electrochemical sensor for the detection of UA. SEM, XRD and FT-IR confirms the successful in-situ growth of Fe-MOF on the carbon paper substrate. The sensor exhibits a linear response to UA concentrations ranging from 3 to 400 μM, with a high correlation coefficient (R 2 = 0.998) and a LOD of 2.798 μM. The sensor demonstrates excellent reproducibility, with an RSD of less than 5%, and notable long-term stability, retaining 96.4% of its initial current response after one month. Furthermore, it exhibits selectivity in UA detection even in the presence of interfering species such as ascorbic acid and dopamine. The feasibility of using the CP/Fe-MOF sensor to detect UA in a typical biological fluid, bovine serum, was also evaluated by the standard addition method. The enhanced sensing performance can be attributed to the preservation of the carbon paper's superior electron transport properties within the composite material, combined with the increased specific active sites by the Fe-MOF components, which significantly boost the electrochemical sensing capabilities.
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NEW JOURNAL OF CHEMISTRY
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2026
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IF 2.6
Siyu Sun,Yifan Zhang,Jun Wu,Rui Yan,Feng Zhang,Chen Wen
The selective electrocatalytic oxidation of glycerol (GOR) into high-value chemicals is crucial for sustainable biorefineries, yet achieving high selectivity, particularly for C1 products like formic acid, remains a significant challenge. Herein, we report the rational design and facile one-step hydrothermal synthesis of ZrO2@Co-MOF heterostructures, where ZrO2 nanoparticles act as core sites influencing Co-MOF growth. The optimized ZrO2@Co-MOF(0.11) catalyst exhibits unprecedented performance for GOR, achieving 98.7% selectivity and near-unity faradaic efficiency for formic acid production at industrially relevant current densities, alongside excellent long-term stability. Comprehensive electrochemical evaluations, ex situ characterization methods, and in situ/operando spectroscopic investigations reveal a pivotal innovation: the ZrO2 interface not only modulates the electronic structure of Co centers and tailors MOF morphology but, critically, directs and stabilizes the in situ electrochemical reconstruction of the Co-MOF into highly active CoOOH/Co(COO)2 species. Furthermore, theoretical calculations elucidate that this engineered interface significantly lowers the energy barrier for critical C–C bond cleavage (ΔG = 0.03 eV), thereby suppressing C3 intermediates and driving the reaction pathway selectively toward formic acid. This work unveils a powerful strategy in hetero-interfacial engineering of MOF-derived materials for precise and efficient biomass valorization.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Ke Chen,Ruishan Li,Chengming Xiao,Xin Guo,Junwen Qi,Jiansheng Li
Efficient gas separation is essential for sustainable energy generation and industrial applications; however, membrane materials often encounter an intrinsic trade-off between permeability and selectivity. In this work, we overcome this limitation by incorporating phenolate-based metal-organic frameworks (termed as SU-102) into polyimides (6FDA-Durene) via a physical blending method. Attributable to the strong CO 2 affinity, significant porosity, and distinctive pore size of SU-102, the resulting mixed matrix membranes (MMMs) demonstrate a synergistic enhancement in both CO 2 permeability and selectivity. Specifically, MMMs with 30 wt% SU-102 amounts achieved a CO 2 /CH 4 selectivity of 33.6 and a CO 2 permeability of 1572.3 Barrer, representing increases by 1.8 and 2.2 times, respectively, compared to the pristine 6FDA-Durene membranes. Furthermore, the MMMs exhibited remarkable long-term stability over 72 h of continuous operation. Importantly, hydrogen-bonding interactions between the carboxyl and hydroxyl groups on SU-102 and the imide groups on 6FDA-Durene significantly enhanced the plasticization resistance of the MMMs, which withstood CO 2 pressures up to 12 bar. This work provides a feasible strategy for the design of high-performance gas separation membranes for practical applications.
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Science Advances
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2026
·Vol. 12
·期 8
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IF 13.9
Weijian Sun,Kaicheng Yang,Yifan Zhao,Liping Sun,Qingchi Xu,Jian Weng,Jun Xu
Traditional petroleum distillation faces high energy demands, necessitating innovative alternatives like membrane separation. This study presents a breakthrough in dual-range and precise pore size modulation of metal-organic frameworks (MOFs) through a ligand functionalization strategy. By tailoring steric configurations and spatial orientations of light-responsive azobenzene groups, we achieved broad-range pore tuning (0.41 to 0.68 nanometers) via functional group length variation, coupled with subnanometer precision through reversible trans-to-cis photoisomerization. Four representative branched alkanes were selected to validate the MOF’s high selectivity. Results showed its capacity to generate a constant carbon-atom-count–dependent permeation gradient, realizing a four-step sequential separation that increased C 6 H 14 purity from 25 to 92.2%. This synergistic approach uniquely combines large-scale pore adjustment with dynamic fine-tuning, decoupling separation efficiency from energy-intensive processes. The membranes’ structural stability and reversible light responsiveness further highlight their potential for sustainable hydrocarbon processing. By integrating molecular design with stimuli-responsive control, this work advances MOF-based membranes as a transformative solution for energy-efficient petroleum fractionation and precise molecular sieving.
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Biomaterials Science
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2026
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IF 6.1
Zixin Zhang,Yuxin Wang,Bingjie Sun,Huaqiang Luo,Bingtian Tu,Huan He,Jing Tu
Chronic diabetic wounds are marked by recurrent infection, persistent ROS and prolonged inflammation. Herein, we report a MOF-reinforced NIR-responsive composite hydrogel (CEPN) that features a dual-cross-linked network assembled from carboxymethyl chitosan (CMCS), polydopamine (PDA), epigallocatechin gallate (EGCG) and L-Cys@Cu MOF nanofibers. The CEPN composite hydrogel is fabricated via a facile one-pot procedure and undergoes rapid in-situ gelation while exhibiting robust tissue adhesion at room temperature. The composite hydrogel integrates ondemand photothermal sterilization, broad-spectrum antioxidant capacity and enhanced mechanical robustness. Moreover, it efficiently scavenges reactive oxygen species (ROS) including O 2 •-, H 2 O 2 , •OH, and neutralizes the synthetic radicals DPPH• and ABTS •+ . Upon near-infrared (NIR) irradiation, the composite hydrogel rapidly generates localized hyperthermia, reaching 60 °C within 8 min, and exhibits excellent bactericidal efficacy against both Gram-negative Escherichia coli (E. coli) and Grampositive Staphylococcus aureus (S. aureus). In vitro and in vivo studies confirm that the composite hydrogel is highly biocompatible and also promotes cell migration and angiogenesis. In a diabetic mouse wound model, the composite hydrogel significantly reduces the wound area and accelerates tissue regeneration. Overall, this multifunctional composite hydrogel offers a simple, safe and effective treatment strategy for chronic diabetic wounds.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Hongfei Ma,Yanfang Huang,Yufei Xie,Wenjuan Wang,Guihong Han
Developing materials that combine ultrahigh adsorption capacity with facile solid–liquid separation remains a central challenge in interfacial science for fluoride pollution control. Current research on metal-organic frameworks (MOFs) as adsorption carriers mainly emphasizes structural design, while byproducts generated during MOF synthesis are commonly regarded as useless impurities and consequently neglected. Herein, we report a previously overlooked crystalline byproduct, La(HCOO) 3 , which was initially formed via N , N -dimethylformamide (DMF) hydrolysis during the solvothermal synthesis of La-BDC and can be subsequently controllably synthesized by the deliberate introduction of formic acid. Owing to its uniform and well-defined particle size, La(HCOO) 3 can be readily separated from La-BDC by simple physical sieving, enabling its direct recovery. Inspired by this feature, we propose a “waste-to-resource” strategy by directly employing La(HCOO) 3 as a functional material for fluoride adsorption flotation for the first time. Under optimized conditions, La(HCOO) 3 exhibits a fluoride adsorption efficiency of 96.29% and a flotation separation efficiency of 94.22%, yielding a low effluent turbidity of 4.37 NTU and excellent selectivity. The adsorption process follows a monolayer chemisorption model with a maximum theoretical adsorption capacity of 206.61 mg/g, outperforming many deliberately designed adsorption carriers. Combined characterization and density functional theory (DFT) calculation reveal that fluoride adsorption is governed by the synergistic effects of ligand exchange and electrostatic attraction, while sodium dodecyl sulfate (SDS) enables efficient flotation recovery through chemical adsorption and electrostatic interactions with La(III) sites. This study reveals a novel approach for the interfacial valorization of MOF byproducts and a sustainable route for fluoride remediation.
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BIOSENSORS & BIOELECTRONICS
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2026
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IF 11.8
Anqi Ji,Xinyi Lu,Zhoulina Du,Yiqing Zhang,Jing Xie,Zhaoyang Ding
Real-time monitoring of H 2 O 2 in plant tissues is useful for evaluating oxidative changes during postharvest storage, but direct on-site detection in vegetables remains difficult because most assays still require tissue disruption and laboratory instruments. In this study, a dual-signal microneedle biosensor was developed by integrating polydopamine-coated Fe/Zr-MOF nanozyme (PDA@Fe/Zr-MOF) into a gelatin/sodium alginate microneedle patch for H 2 O 2 detection in lettuce. The polydopamine coating improved the peroxidase-like response of Fe/Zr-MOF through •OH generation and also contributed to photothermal conversion under 808 nm near-infrared (NIR) irradiation. After contact with lettuce leaves, the microneedles extracted interstitial fluid and allowed H 2 O 2 -triggered TMB oxidation to be read by both colorimetric imaging and thermal imaging. The two outputs were not independent recognition mechanisms, but they provided mutually supportive information and helped reduce the influence of sample color and environmental fluctuations. The sensor achieved detection limits of 0.42 μM for the colorimetric mode and 0.34 μM for the photothermal mode. During 15 days of storage at 4°C, the sensor tracked H 2 O 2 accumulation in lettuce and showed a clear relationship with spoilage progression. These results indicate that PDA@Fe/Zr-MOF-based microneedle sensing is a feasible approach for monitoring oxidative freshness changes in postharvest vegetables.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
De Ao,Fujiang Geng,Mao Ye,Shuangjie Yuan,Fanpeng Meng,Jinxiao Bao,Zibo Yang,Zhihua Qiao
The development of high-performance membranes for CO 2 /N 2 separation remains challenging due to the trade-off between permeability and selectivity. A novel strategy has been developed to fabricate K,Na-A zeolite/ZIF-62 crystal-glass composite membranes through a melt-quenching process. The high viscosity of molten ZIF-62 enables the uniform distribution of zeolite particles, preventing their aggregation and sedimentation. The synergistic effect between the highly porous K,Na-A zeolite and the continuous ZIF-62 glass matrix leads to enhanced membrane porosity and efficient gas transport channels. Benefiting from the molecular sieving effect of K,Na-A zeolite and the excellent interfacial compatibility of ZIF-62 glass matrix, the composite membranes demonstrate superior gas separation capability. Systematic investigation revealed that the optimized a g (ZIF-62) 0.7 /(K,Na-A) 0.3 membrane exhibited remarkable CO 2 separation performance with a CO 2 permeability of 58,824 barrer and a CO 2 /N 2 selectivity of 43.1, surpassing the 2019 upper bound. This facile and scalable strategy opens up new opportunities for developing high-performance composite membranes for practical gas separation applications.
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MOLECULES
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2026
·Vol. 31
·期 11
·1908
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IF 5.1
Wei Cao,Lifang Chen,Tingting Wang,Ke Wang,Zhen Song,Zhiwen Qi
In order to address corrosion and pollution problems of liquid acids and limitations of traditional solid acids, sulfated MOF-808-SO4catalysts were developed by creating unsaturated sites in MOF-808 for sulfate grafting with ligand defect engineering. Characterization verified framework integrity, successful sulfate coordination, and maintenance of high surface areas and tunable porosity. Temperature-programmed desorption of ammonia (NH3-TPD) establishes a clear consistent trend between defect density and the concentration as well as the strength of acid sites, indicating that a higher degree of ligand deficiency promotes the formation of more abundant and stronger acid centers. For esterification of acetic acid with n-butanol, the catalyst prepared by replacing 40 mol% of BTC with BDC achieved ≥99% conversion of acetic acid under mild conditions of 2.0 wt% catalyst loading and 1:2 alcohol/acid molar ratio at 120 °C for 6 h, outperforming conventional solid acids. This performance stems from high-density strong Brønsted acid sites strongly coordinated at defects and an open pore structure facilitating diffusion. The catalyst was easily recovered by ethanol washing and maintained stable activity over five cycles without loss of catalytic capability. This work suggests defect engineering as an effective strategy for tuning acidity and catalytic performance in MOF-based solid acids for green esterification.
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BIORESOURCE TECHNOLOGY
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2026
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IF 8.2
Jiaze Yan,Xiaosong Zhang,Yue Huang,Chunping Li,Jiajia An,Daquan Zhang
Lignin-derived Ca-MOF carbon nanofibers enabled efficient fluoride CDI. • CMDNF achieved a fluoride electrosorption capacity of 26.81 mg·g −1 . • Fluoride concentration decreased from 10 to 1.15 mg·L −1 . • The electrode retained 91.27% capacitance after 5000 cycles. • CMDNF retained 75.38% adsorption capacity after 15 regeneration cycles. Valorization of renewable lignin into high-performance electrochemical materials offers a sustainable route for advanced water treatment, yet achieving efficient fluoride removal together with long-term electrode stability remains challenging. Herein, we report a hierarchical Ca-MOF/lignin-derived carbon nanofiber (CMDNF) electrode fabricated via in situ solvothermal growth of a Ca-based metal–organic framework on electrospun lignin nanofibers, followed by controlled carbonization. This strategy converts biomass-derived nanofibers into a conductive and hierarchically porous carbon framework integrated with Ca-containing surface environments favorable for fluoride electrosorption. Structural characterization reveals that Ca species are uniformly distributed throughout the carbon architecture, while the lignin-derived framework provides structural robustness, efficient electron transport, and improved ion-accessible pathways. The optimized CMDNF electrode exhibits a specific capacitance of 163F·g −1 at 2 mV·s −1 and retains 91.27% of its initial capacitance after 5000 charge–discharge cycles, demonstrating good electrochemical stability. In fluoride electrosorption experiments, it delivers a maximum adsorption capacity of 26.81 mg·g −1 and reduces the fluoride concentration from 10 mg·L −1 to 1.15 mg·L −1 under model-solution conditions, below the WHO guideline value of 1.5 mg·L −1 . XPS and EPR analyses suggest that the enhanced fluoride removal arises from the combined contribution of Ca-containing oxygen-coordinated surface environments, defect-rich carbon surfaces, and electric double-layer electrosorption. This work demonstrates a feasible strategy for converting lignin into high-performance CDI electrodes and provides useful insight into the rational design of biomass-derived hierarchical materials for fluoride removal at electrode–electrolyte interfaces. Download: Download high-res image (166KB) Download: Download full-size image
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Nature Communications
·
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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