JOURNAL OF POLYMER RESEARCH
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2025
·Vol. 32
·期 12
·452
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IF 2.8
Xiao Shujuan,Li Hao,Lu Xiaohui,Yu Shouwu
Emulsified oil has dynamic stability, and its harmless treatment has become a challenging problem worldwide. Membrane filtration technology has garnered significant attention in the field of oil-water separation due to its low cost, high efficiency, and environmental friendliness. In this study, NH 2 -CAU-1 was incorporated into a polyphenylsulfone (PPSU) matrix to fabricate superhydrophilic and antifouling mixed matrix membranes (MMMs) via the phase inversion method, which were subsequently used for the separation of several oil-in-water emulsions. By adjusting the NH 2 -CAU-1 loading capacity, the mechanical properties, wettability, separation performance, and antifouling properties of the MMMs were optimized. The results indicated that when the NH 2 -CAU-1 loading is 0.1 wt%, the MMMs exhibited superhydrophilicity (water contact angle is 4.2°) and underwater superoleophobicity (underwater oil contact angle is 153.4°), achieving a separation efficiency of over 99.55% for various oil-in-water emulsions, with an irreversible fouling rate of only 2.66%.
研究领域:
材料科学
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环境工程
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膜技术
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分离科学
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CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Xinyu Ren,Lu Wang,Zhipeng Xie,Congshu Huang,Jingjing Wang,Shihao Zhang,Bin Liu
Modulating the release of Cu(I) ions from copper-based antifoulants is of notable engineering and scientific importance. However, this approach remains challenging because of a lack of valence-stabilizing protection strategies for Cu(I) sites and the poorly characterized releasing behavior of Cu(I) ions. To address these issues, a novel multivalent antifoulant Cu(I, II)-metal–organic framework (Cu(I, II)-BTC; BTC: 1,3,5-benzenetricarboxylate) was synthesized via an in situ reduction of Cu(II)-BTC under mild conditions. The framework structure of Cu(I, II)-BTC was examined in detail using X-ray diffraction, N 2 sorption analysis, and transmission electron microscopy–selected-area electron diffraction. For the first time, the release behavior of Cu(I) from Cu(I, II)-BTC submerged in seawater was characterized by ultraviolet–visible spectrophotometry. The chemical state of the copper sites in the Cu(I, II)-BTC complex was determined before and after submersion in fresh seawater to investigate whether the framework structure facilitated the retention of Cu(I) ions. Further, the bactericidal activity of Cu(I, II)-BTC was evaluated by measuring the intracellular reactive oxygen species levels to reveal the biocidal effect of the released Cu(I) ions. Finally, the antifouling performance of the resulting Cu(I, II)-BTC-based antifouling coating was comprehensively evaluated via laboratory bioassays (using fouling bacteria and barnacle larvae as test organisms) and long-term marine field trials. This study offers viable avenues for designing novel antifoulants and developing an in-depth understanding of the copper-mediated antifouling process.
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Electrocatalysis
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2025
·
IF 2.8
Gao Hongmin,Deng Jiahe,Zhang Hehua,Chen Hua,Zhou Yang,Qu Pu,Zhu Huan,Chang Dong,Pan Hongzhi
Developing portable, accurate, cost-effective hydrogen peroxide (H 2 O 2 ) detection platforms is essential for industrial applications and early disease diagnosis. Metal–organic frameworks (MOFs) based composites integrated with metal nanoparticles have been intensively investigated in electrochemical sensing, attributable to their unique architecture and performance characteristics. Herein, PdNPs@NH 2 -MIL-101(Fe) nanocomposites were synthesized via a green reduction process using tannic acid and applied in the development of an enzyme-free electrochemical sensor for H 2 O 2 detection. The synergistic effect of the Pd nanoparticles and the MOFs matrix provided abundant active sites and enhanced electron transfer capability, enabling the sensor to exhibit excellent electrocatalytic performance. Under optimal conditions, the sensing platform exhibited a wide linear response from 10 μM to 15 mM, with a detection threshold of 3.6 μM (S/N = 3). Furthermore, the sensor achieved reliable detection of exogenous H 2 O 2 in commercial mouthwash samples and intracellularly generated H 2 O 2 by cancer cells (HepG2), underscoring its effectiveness in practical scenarios. This work presents a novel strategy for synthesizing high-performance composite nanomaterials and offers valuable insights into the large-scale application of electrochemical sensors for H 2 O 2 detection. Graphical
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FOOD CHEMISTRY
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2025
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IF 9.8
Ying Huang,Tiantian Liu,Ying Xiong,Qian Wen,Wang Li,Jiali Ren,Haiyan Zhong
The rapid discrimination and detection of pesticide residues represent a critical strategy for mitigating food safety risks associated with pesticide contamination. We designed and synthesized three distinct iron-based metal-organic frameworks (Fe-MOFs) nanozymes incorporating varied organic ligands. Owing to the differential modulation of their peroxidase-like activity by different pesticides, a facile yet efficient three-channel sensing array was constructed using these Fe-MOF nanozymes, allowing for the simultaneous discrimination of five pesticides (the minimum distinguishable concentration was 1 μg/mL). By converting pesticide-specific response signals into fingerprint profiles and subjecting them to analysis, including linear discriminant analysis and hierarchical cluster analysis, we achieved the classification of diverse pesticide species. Notably, the sensing platform exhibited good discriminative capability even for complex pesticide mixtures and real samples (corn and oat). This approach established a reliable and efficient strategy for pesticide screening, offering significant potential for enhancing food safety monitoring and safeguarding public health.
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PubMed
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POLYMER DEGRADATION AND STABILITY
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2025
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IF 7.4
Runze Jin,Baosheng Xu,Lijie Qu
In this study, a novel Ce metal–organic framework (Ce-MOF) material was successfully synthesised via structural defect engineering using 5-hydroxyisophthalic acid as a defect agent by precisely controlling the Ce 3+ /Ce 4+ valence ratio and hydroxyl content. Experimental results demonstrated that Ce-MOF not only effectively scavenged the free radicals generated in epoxy resin (EP) during γ-irradiation through the synergistic interaction between hydroxyl defects and Ce, thereby reducing the radical-induced chain scission and considerably enhancing the γ-radiation resistance of EP, but also improved the mechanical properties and thermal stability of EP via chemical bonding and hydrogen bonding. The oxidation inhibition rate improved from −34.2% for pure EP to −6.2% for EP/Ce-MOF-OH3. Furthermore, the material maintained high tensile strength and fracture toughness even after irradiation, exhibiting excellent radiation stability. After exposure to 800 kGy of γ-radiation, the changes in tensile strength and fracture toughness of pure EP were −23.05% and −24.07%, respectively, while the changes in those of EP/Ce-MOF-OH3 were only −9.75% and −5.39%, respectively. This study provides a new strategy for developing advanced radiation-resistant materials with considerable application potential.
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Nanomaterials
·
2025
·Vol. 15
·期 11
·806
·
IF 4.3
Xiaojiao Yang,Shuai Han,Hongna Xing,Yi Dong,Xia Deng,Yan Zong,Juan Feng,Xiuhong Zhu,Xinghua Li,Xinliang Zheng
MOFs-derived magnetic carbon-based composites are considered to be valuable materials for the design of high-performance microwave absorbents. Regulating phase structures and introducing mixed-valence states within the composites is a promising strategy to enhance their charge transfer properties, resulting in improved microwave absorption performance. In this study, iron oxide components show a temperature-dependent phase evolution process (α-Fe 2 O 3 →Fe 3 O 4 →Fe 3 O 4 /FeO), during which the valence states of iron ions are regulated. The tunable phases modulate the magnetic Fe 3 O 4 component, resulting in enhanced magnetic loss. The changed valence states affect the polarization relaxation by adjusting the electronic structure and tune the electron scattering by introducing defects, leading to enhanced dielectric loss. The microwave absorption properties of iron oxide@carbon composites display phase- and valence state-dependent characteristics. Especially, Fe 3 O 4 @C composites exhibit superior microwave absorption properties, ascribed to the improved magnetic/dielectric losses induced by good impedance matching and strong microwave attenuation capacity. The minimum reflection loss of Fe 3 O 4 @C composites reaches −73.14 dB at 10.35 GHz with an effective absorption bandwidth of 4.9 GHz (7.69–12.59 GHz) when the absorber thickness is 2.31 mm. This work provides new insights into the adjustment of electromagnetic parameters and microwave absorption properties by regulating the phase and valence state.
研究领域:
材料科学
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电磁学
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Wenxiang Qiu,Jie Yin,Xinyu Liu,Xinmiao Zhang,Xinyu Shi,Chunyan Dai,Naixia Lv,Chao Wang,Hongping Li,Huaming Li
Metal-organic frameworks (MOFs) have attracted significant attention in catalysis due to their permanent porosity and abundance of active sites. However, mass transfer limitations and low active site utilization in heterogeneous reactions have hindered the efficient production of active oxygen species in catalytic processes. Fortunately, MOF-based porous ionic liquids integrate the catalytic activity of solid catalysis and fluidity of ionic liquids. Herein, we synthesized UiO-66-based porous ionic liquids (PIL-UiO-66) for catalytic oxidative desulfurization. The cavity of the UiO-66 moiety has been confirmed to be empty through gas uptake studies and molecular dynamics simulations. Due to the imidazolium-based ionic liquid with superb mass transfer accelerating production of active oxygen species, PIL-UiO-66 demonstrated an enhanced desulfurization efficiency (98.3%) than UiO-66 (33.1%). Ultimately, the oxidation mechanism was revealed by the experimental results along with the theoretical calculations the oxidation mechanism. These findings provide an effective approach to developing MOFs-based PILs as catalysis.
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ELECTROCHIMICA ACTA
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2025
·
IF 5.6
Zhikun Zhang,Ying Shi,Zhengjie Li,Jilong Han,Zhiyan Chen,Fangfang Ma,Yanchao Qi,Yumin Liu
MicroRNA-21 (miR-21) has shown great promise as a biomarker for early cancer diagnosis. However, its trace-level abundance in clinical samples complicates point-of-care detection. Herein, we developed a new DNA-modified bimetallic dual-ligand MOF-based electrochemical sensor for highly sensitive and rapid detection of miR-21. The MOF was synthesized using 2,2′-bipyridine-5,5′-dicarboxylic acid (DPDC) and meso‑2,3-dimercaptosuccinic acid (DMSA) as organic linkers, with Ni²⁺/Co²⁺ serving as metal centers. Subsequently, the capture DNA (cDNA) was designed and modified MOF with high porosity and large surface area, significantly enhancing molecular interactions between the cDNA and target miR-21 to boost sensitivity. The developed biosensor exhibits a linear detection range of 10 fM to 100 nM, with a low detection limit of 10 fM and excellent specificity. This method effectively detects miR-21 in blood samples, showcasing strong clinical potential and providing a reliable platform for precision biosensing.
研究领域:
生物传感器
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纳米技术
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生物化学
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分子诊断学
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材料科学
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电化学
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肿瘤学
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CARBOHYDRATE POLYMERS
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2025
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IF 12.5
Yilan An,Shiping Cheng,Qiaoling Ding,Dongbo Guan,Yi Hu,Yanli Dou
Flexible sensors are essential for human-machine interfaces and bioinspired intelligent robotics, yet achieving a balance between mechanical robustness and high sensitivity at lower temperatures remains a challenge. Herein, a multifunctional hydrogel sensor (PG 2 /Ag-MOFs-XG) was fabricated through physical crosslinking of polyvinyl alcohol (PVA) and xanthan gum (XG) in glycerol (Gly) and deionized water mixture via freeze-thaw circulation and NaCl crosslinking. The in situ growth of Ag-MOFs on XG molecular chains is facilitated by the electrostatic interactions between the hydroxyl groups and the carboxyl groups of XG and Ag + , restricting molecular chain movement, thereby enhancing comprehensive properties. The PG 2 /Ag-MOFs-XG hydrogel exhibits outstanding mechanical properties across a broad temperature range, with a 101 % increase in tensile strength (from 0.583 MPa to 1.17 MPa) at 25 °C and a 112 % increase (from 0.352 MPa to 0.746 MPa) at −18 °C, compared to the pure PVA hydrogel. Additionally, it demonstrates exceptional sensitivity to stretching (GF = 3.65) and compression (S = 3.38 × 10 −2 kPa −1 ). Furthermore, the hydrogel functions as a flexible sensor for monitoring human motion, assessing industrial robot performance, and detecting the tightness of robotic components. This work offers valuable insights into the development of portable, highly sensitive, and flexible sensors for intelligent robotics.
研究领域:
材料科学
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纳米技术
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机器人学
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传感器
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高分子科学
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DOI
PubMed
高影响因子
TOPICS IN CATALYSIS
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2025
·
IF 3
Wang Shuai,Xue Tairui,Hai Luhang,Song Hua
The development of highly active and stable non-precious catalysts for selective hydrogenation of phenol to cyclohexanol is significant but challenging. Here, CeO 2 nanorod supported Ni nanoparticles with oxygen vacancy structural defects were constructed via direct pyrolysis of metal organic framework (MOFs) for catalytic hydrogenation of phenol. Results showed pyrolysis temperature and time had an obvious effect on the catalytic performance. Under the reaction conditions of 160 °C, 2 MPa, 2 h, Ni@C/CeO 2 -1 h − 400 °C catalyst prepared at temperature of 400 °C and time of 1 h exhibited the best catalytic performance with 94.7% phenol conversion and 100% cyclohexanol selectivity due to the highly dispersed Ni nanoparticles. Further increase in pyrolysis temperature or extension of pyrolysis time both resulted in the decrease of the catalytic performance. In addition, results also found the Ni@C/CeO 2 -1 h − 400 °C catalyst with a rod-like structure displayed higher phenol conversion than purchase CeO 2 supported Ni (Ni@C/CeO 2 -pur) catalyst. The enhanced catalytic performance of Ni@C/CeO 2 -1 h − 400 °C catalyst is ascribed to the higher concentration of oxygen vacancies. This work provides the design and synthesis of highly efficient non-noble catalysts for the production of value-add chemicals from biomass.
研究领域:
催化化学
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材料科学
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纳米技术
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绿色化学
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生物质转化
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
·
IF 8.3
Na Wang,Yibo Zhang,Zelin Meng,Mingyang Song,Heming Zhao,Yang Wang,Shuai Bai,Jianglei Hu,Fengwei Shi,Xia Yang
Addressing the low surface area and high charge recombination of graphitic carbon nitride (g-C 3 N 4 ), this study employs a synergistic carboxylation and MOF-loading strategy. Copper-based MOF (Cu-MOF) was uniformly loaded onto carboxylated spherical g-C 3 N 4 (C 3 N 4 –C) via a solvothermal method, creating a visible-light-responsive C 3 N 4 –C-MOF photocatalyst. Material characterization results indicate that the characteristic peak at 1632 cm −1 in the Fourier Transform Infrared Spectroscopy confirms the successful grafting of 4-carboxybenzoic acid (4-CBA). Carboxylation enhanced hydrophilicity and optimized surface charge, improving reactant adsorption. Photoelectrochemical tests showed significantly boosted visible light absorption, increased photocurrent density, and reduced EIS arc radius, confirming efficient interfacial charge separation. Photocatalytic hydrogen production experiments revealed that under simulated solar irradiation, the hydrogen production rate of C 3 N 4 –C-MOF2.0 reached up to 12.68 mmol g −1 h −1 , representing an approximately 1.68-fold increase compared to the unmodified C 3 N 4 -MOF. This work provides a novel approach for designing MOF/functionalized g-C 3 N 4 composites, advancing solar-driven hydrogen production.
研究领域:
材料科学
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化学工程
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纳米技术
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能量转换
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光催化
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Journal of Science-Advanced Materials and Devices
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2025
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IF 6.8
Kong Jiahui,Zhang Yongqiang,Yang Yuchang,Wang Ziheng,Jing Xiaohong,Lin Shuting,Chen Hongyue,Dong Xiaoxv,Qu Changhai,Cai Mengru,Ni Jian,Yin Xingbin
Malignant melanoma (MM) exhibits clinical traits of vigorous metastasis and an unfavorable prognosis. Traditional therapeutic modalities such as surgical resection, radiotherapy, and chemotherapy have restricted efficacy and notable side effects, thereby urgently demanding new drugs or treatment approaches. The iron-doped zeolite imidazole ester skeleton material (Fe-ZIF-8, FZ) exhibits outstanding biological safety and acid-responsive drug release properties, serving as an excellent nano-delivery carrier. Oridonin (Ori) is capable of inducing ferroptosis in tumor cells by targeting key genes (such as GPX4, SLC7A11, GGT1), and demonstrates a potent therapeutic effect on MM. Simultaneously, small interfering RNA (siRNA) can exert a role in gene silencing. In this study, we devised biomimetic nanoparticles (NPs) based on iron-doped zeolitic imidazolate framework-8 (FZ) for the co-delivery of Ori and siRNA targeting GPX4 (siRNA GPX4 ). FZ was employed to co-load Ori and siRNA targeting GPX4, the core regulator of ferroptosis, to play a role in drug and gene therapy for MM. The A375 tumor cell membrane was biomimetically modified to construct anti-tumor drug targeted delivery nanoparticles, thereby achieving efficient co-delivery of Ori and siRNA GPX4 . This provides a novel idea for the development of highly efficient and low-toxicity treatment of MM and the overcoming of tumor drug resistance.
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