JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2025
·Vol. 36
·期 15
·1-17
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IF 2.8
Wang Renjie,Hu Mengmeng,Zhu Yifan,Jin Xiaxue,Ge Siying,Cai Runjing,Wang Tongliang,Cheng Qiaohuan,Ran Huijuan,Peng Fei
Dopamine is a critical neurotransmitter, and its dysfunction is strongly linked to various neurological disorders, including Parkinson’s disease, depression, and schizophrenia. Current detection techniques exhibit limitations in clinical applications; therefore, developing a method with high sensitivity and rapid response for dopamine detection holds significant importance. In this study, poly(3,4-ethylenedioxythiophene) (PEDOT) was synthesized via the solvent method, and a novel electrochemical sensor was constructed by integrating titanium metal–organic framework (Ti-MOF) with PEDOT through an in-situ synthesis strategy. This sensor combines the REDOX properties of Ti-MOF with the high conductivity of PEDOT, demonstrating exceptional sensitivity toward dopamine. The linear detection range spans from 8 to 400 μM, with a detection limit of 3.815 μM. In the presence of ascorbic acid (AA), dopamine (DA), and uric acid (UA), the sensor exhibits remarkable selectivity for DA. Repeatability testing reveals that the relative standard deviation of the sample response current is less than 5%, indicating high data consistency. Furthermore, after one month of storage, the senso’s response to DA decreases by only 12%, reflecting excellent reproducibility. Additionally, this study provides an in-depth analysis of the sensor’s REDOX mechanism, offering theoretical support for its optimization and practical application. The successful development of this sensor introduces an innovative, efficient, and highly sensitive approach for dopamine detection, thereby expanding the application scope of Ti-MOF in the field of electrochemical sensing.
研究领域:
生物医学工程
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材料科学
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神经科学
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MICROCHEMICAL JOURNAL
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2026
·
IF 5.2
Mengyao Ma,Mengmeng Hu,Yifan Zhu,Renjie Wang,Tongliang Wang,Jinnan Gan,Runjing Cai,Nana Dai,Ting Gao,Qiaohuan Cheng,Qianqian Chen,Huijuan Ran,Fei Peng,Qingsong Zhu
In-situ growth of Ti-MOF@rGO improves dispersion, reduces agglomeration, and facilitates electron transport. • 0.3–400 μM linear range, 0.114 μM LOD (S/N=3), selective vs UA/AA, stable/reproducible. • Synergistic Ti-MOF@rGO boosts DA adsorption and electron transfer via 2e - /2H + redox. Electrochemical detection of dopamine (DA) is critically important for the diagnosis and monitoring of neurological disorders. In this study, we present a novel composite material, Ti-MOF@rGO, synthesized in-situ through the integration of titanium-based metal-organic frameworks (Ti-MOFs) with reduced graphene oxide (rGO). This hybrid material effectively combines the abundant redox-active sites of Ti-MOF with the excellent electrical conductivity and large specific surface area of rGO, thereby facilitating efficient charge transfer and enhanced DA adsorption. The Ti-MOF@10%rGO-modified glassy carbon electrode demonstrated outstanding electrocatalytic performance for DA oxidation, exhibiting a wide linear detection range of 0.3–400 μM and a low detection limit of 0.114 μM (S/N = 3). The sensor exhibited high selectivity against common interferents such as uric acid and ascorbic acid, along with excellent repeatability, reproducibility, and cycling stability. This work presents a promising strategy for the rational design of MOF-based composites and offers a robust platform for ultrasensitive and selective electrochemical biosensing applications.
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JOURNAL OF MOLECULAR LIQUIDS
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2025
·
IF 5.2
Xiupei Yang,Hanyu Yang,Die Deng,Yujie Kang,Yuxiu Fan,Ya Wang
Copper (Cu) nanoparticles have been widely used as catalysts for colorimetric assays. The challenge in developing Cu nanoparticles is to design nanomaterials with high catalytic activity and stability. Herein, a series of NH 2 -MIL-125(Ti)@Cu (Ti-MOF@Cu) composites with enzyme activity were obtained by in situ growth of different proportions of copper on titanium-based metal organic frameworks (Ti-MOFs), among which [email protected] showed the highest enzyme activity. Electron transfer at the interface of Ti-MOF and Cu promoted the decomposition of hydrogen peroxide (H 2 O 2 ) to generate active species under near-neutral conditions, thereby oxidizing colorless TMB to blue oxidized TMB (ox-TMB). On this basis, a sulfide ion (S 2− ) detection method based on a [email protected] colorimetric sensor was constructed, in which the limit of detection (LOD) was 0.16 μM in the linear range of 0.5–30 μM. Furthermore, [email protected] was successfully used for detecting S 2− in water samples. The successful synthesis of Ti-MOF@Cu provides new insights for further study of the enzyme-like activity of copper-based materials, and the constructed facile and sensitive sensor system has broad application prospects.
研究领域:
材料科学
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分析化学
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生物医学工程
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高影响因子
Materials Today Energy
·
2026
·
IF 8.1
Yifan Li,Hongshun Zheng,Tong Zhou,Hao Cui,Haigang Dong,Dongxia Yang,Ke Wang,Weijie Zhan,Boxue Wang,Yun Chen,Jize Li,Yuetong Cao,Zhikun Wang,Yumin Zhang,Jin Zhang,Qingju Liu
TiO 2 has emerged as one of the most extensively studied photocatalysts, because of its great stability and abundant availability. The hydrogen production efficiency of TiO 2 photocatalysts can be significantly enhanced derived from the precursors of titanium-based metal-organic frameworks (MOFs) loaded with single-atom. Although the hydrogen evolution activity of TiO 2 -based photocatalysts under ultraviolet light has been steadily enhanced in recent years, the activity under visible light remains a critical challenge to be addressed. Herein, we report a Zn single atom (Zn SA) loaded TiO 2 -based photocatalyst derived from Ti-BPDC (Ti-MOF). Under irradiation with visible light at 400 nm, the optimized sample exhibits a hydrogen evolution rate (HER) of 9.21 mmol g −1 h −1 with an apparent quantum efficiency (AQE) of 6.82%, with a HER approximately 3 times higher than that of pristine TiO 2 (3.14 mmol g −1 h −1 ), along with great stability. The results demonstrate that loading an appropriate amount of Zn SAs optimizes the band structure of the photocatalyst, activates the adjacent O atoms, and also suppresses the recombination of photogenerated electron-hole pairs, as well as modulates the adsorption-desorption equilibrium of H∗ species, thereby significantly enhancing photocatalytic activity. This work offers a strategy for designing TiO 2 -based photocatalysts with high visible-light activity.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121502
·
IF 7.2
Xinyi Dong,Ya Chu,Weiqiang Zhang,Baoye Hu,Jinsheng Zhao,Yue Liu,Shiyu Wang,Guangjiu Zhao
In this work, S-scheme Ti-MOF/Cs 2 AgBiBr 6 heterojunction photocatalysts were developed via an in situ self-assembly strategy, achieving satisfactory interfacial contact, matched band alignment, enhanced charge separation, and redox activity. The optimized Ti-MOF/Cs 2 AgBiBr 6 composite exhibited remarkable photocatalytic performance toward benzyl alcohol oxidation under visible light, achieving > 99 % conversion and selectivity without external oxidants and sacrificial agents. It represents a fourfold enhancement over individual components, while maintaining broad substrate applicability and excellent cycling stability. The S-scheme configuration ensures sufficient oxidation potential compared with conventional Type-II systems. This work addresses challenges of limited bandgap tunability and inefficient carrier transport in selective aromatic alcohol oxidation, establishing a promising strategy for designing efficient lead-free perovskite photocatalysts toward sustainable organic transformations.
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ENVIRONMENTAL RESEARCH
·
2026
·
IF 8.2
Dongyuan Li,Xiaojun Peng,Rui Zhang,Yadong Chen,Peng Song,Wei Chen,Da Wang
The ubiquitous presence of emerging contaminants (ECs) such as antibiotics and synthetic dyes in aquatic systems necessitates advanced remediation technologies. However, conventional polyvinylidene fluoride (PVDF) membranes often suffer from severe fouling and rapid flux decline due to their inherent hydrophobicity, severely limiting their long-term applicability. This study presents the rational design of Ti-MOF/CN/PVDF composite membranes via integrated solvothermal synthesis of Ti-MOF/g-C 3 N 4 (CN) heterojunctions and nanoparticle-regulated phase inversion. Comprehensive characterization (XRD, XPS, SEM-EDS, BET, AFM) confirmed the successful fabrication of the heterojunction membrane. XPS and XRD analyses confirmed the formation of covalent bonds at the (Ti-O-N) interface and lattice strain induced by the nanoparticle filler, effectively suppressing PVDF crystallization. Ti-MOF/CN exhibits a unimodal particle size distribution (D50 ≈ 400 nm) and high BET specific surface area (72.44 m 2 g −1 ). Its uniform dispersion in PVDF increases the membrane pore size from 28.1 nm in pristine PVDF to 38.7 nm at 1 wt% Ti-MOF/CN, significantly enhancing the overall porosity. The top-performing M3 composite membrane demonstrated exceptional multifunctionality: it achieved retention rates exceeding 90% for multiple dyes (Rhodamine B, Methyl Blue, Malachite Green) and antibiotics (Tetracycline). Long-term retention experiments were conducted on complex wastewater containing mixed dyes, alongside photodegradation tests under simulated solar radiation conditions (AM 1.5G, 100 mW cm −2 ). Results indicate over 95% retention of mixed pollutants. Visible light irradiation significantly enhances the M3 membrane's FRR to 91.6%, further demonstrating the Ti-MOF/CN composite membrane's robust long-term operational stability and self-cleaning capability for photocatalytic degradation of aqueous pollutants.
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PubMed
高影响因子
POLYMER DEGRADATION AND STABILITY
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2026
·
IF 8.1
Fei Li,Lixin Liu,Lei Song,Yunlong Sun,Shixue Ren,Lu Li,Rui Wang
The closed-loop recycling of plastics is crucial for polymer sustainability. Bio-based PEF can be depolymerized via glycolysis, but catalysts often exhibit low efficiency. In this work, a titanium-based metal-organic framework (MOF), MIL-125, was synthesized with optimized metal-to-ligand ratios (MIL-125-5 with a Ti/PTA ratio of 1:5) to achieve a high specific surface area of 1719.6 m 2 /g and abundant Lewis acid sites. This catalyst demonstrated exceptional performance in PEF polymerization, yielding a polyester with a M n of 3.7 ×10 4 g/mol, a PDI of 1.9, and low metal residue (176.6 ppm Ti content), under mild conditions (210 o C for esterification and 230 o C for polycondensation). Comprehensive structural and catalytic characterization of MIL-125 was conducted through a combination of advanced techniques. XPS confirmed the existence of crystallographically distinct Ti 3+ /Ti 4+ active sites. The N 2 adsorption-desorption isotherms indicate the presence of microporous and mesoporous structures, with a pore volume of 0.65 cm 3 /g. while TGA revealed exceptional thermal stability exceeding 300 o C. Furthermore, NH 3 -TPD and EPR spectroscopy revealed abundant Lewis acid sites and oxygen vacancies, respectively. These structural features demonstrated a strong correlation with catalytic activity, as further validated through DFT calculations. Remarkably, the same MIL-125 catalyst facilitated closed-loop recycling by enabling depolymerization of PEF via glycolysis at 180 o C and atmospheric pressure, followed by repolymerization without catalyst separation or purification. This process produced recycled PEF (rPEF) with an Mn of 2.7×10 4 g/mol and properties comparable to virgin PEF, underscoring the catalyst's reusability and efficiency. This study establishes MIL-125 as a green, high-performance catalyst for sustainable polyester production and recycling.
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ACS Omega
·
2024
·
IF 3.7
Mengshi Xia,Pan Yang,Chuiyu Zhu,Yue Hu,Lichao Fang,Junsong Zheng,Xiaolong Wang,Yan Li
Cystatin C (CysC) has been proven to be used to diagnose acute kidney injury (AKI) rapidly and sensitively early. Therefore, it is urgent to develop a sensitive, novel, and rapid method for detecting CysC. In this work, a novel photoelectrochemical (PEC) biosensor was designed for ultrasensitive CysC detection. Ti-MOF@DM-LZU1@Au as a photosensitive material was first modified on the ITO electrode surface. Then, Ab1 and CysC were assembled on the electrode via the specific immunoresponse of an antigen and antibody. Lastly, the conjugate Ab2/l-Cys bilayer/l-Cys-hemin/G-quadruplex with self-catalytic enzyme performance, as a signal amplification approach, could further react with CysC and Ab1, which resulted in a stronger photocurrent. As expected, the constructed PEC sensor realized the ultrasensitive detection of CysC, with a detection range of 10 pg/mL to 16 μg/mL and a lower limit of 8.023 pg/mL. The biosensor had excellent repeatability, selectivity, and stability. Moreover, it can provide a new method for the sensitive and rapid detection of other protein molecules in clinical practice.
研究领域:
分析化学
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生物传感器
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纳米材料
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生物医学工程
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临床诊断
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
·
IF 9.1
Qishuo Chang,Wenxiang Zhao,Liangjun Yue,Yuxia Zhai,Chenchen Mi,Deqing Shi,Xinliang Liu,Ming Wang,Yingfei Hou
Metal-organic frameworks (MOFs)-based mixed matrix membranes (MMMs) have demonstrated significant potential in CO 2 separation applications. However, challenges including inadequate CO 2 affinity of MOFs and insufficient compatibility at MOF-polymer interface have hindered further advancement of MMMs. Hence, this work proposes a synergistic optimization strategy involving mixed-ligand and metal modification to overcome mentioned limitations. Initially, various defect-functionalized NH 2 -MIL-125 (D X NMIL-125) fillers were synthesized by adding 5-hydroxy-o-aminobenzoic acid ligands and integrated into carboxyl-modified cPIM-1 to formulate MMMs. The resulting MMMs were then Zn (II)-modified to further strengthen gas separation capabilities. The plentiful unsaturated Ti sites in D X NMIL-125 and the introduction of Zn (II) impart exceptional CO 2 affinity to MMMs. Furthermore, they form multiple cross-linked structures with cPIM-1 via coordination, thereby improving interfacial compatibility and separation stability of MMMs. The binding energy derived from molecular simulation and CO 2 adsorption results verify that defect sites enhance CO 2 adsorption capacity of MOF. The optimal Zn@D 33 NMIL/cPIM-10 MMMs achieve a CO 2 permeability of 4312.2 Barrer and a CO 2 /N 2 selectivity of 34.8, reaching 2019 McKeown upper bound. This study presents a viable pathway for developing new-generation CO 2 selective separation MMMs.
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JOURNAL OF CATALYSIS
·
2025
·
IF 6.5
Yixin Li,Jianhao Qiu,Jie Xu,Yong Tang,Dingliang Dai,Guanglu Xia,Biyao Fang,Jianfeng Yao
The utilization of solar energy to break the C α C β bonds in lignin under mild conditions is highly important for lignin valorization. This work presents an MIL-125-derived titanium oxide (M-TiO 2 )-modified carbon nitride (g-C 3 N 4 ) heterostructure for selective photocatalytic lignin C α C β bond cleavage at room temperature. The conversion of lignin model 2-phenoxy-1-phenylethanol (PP-ol) reached 90.8 % over M-TiO 2 /g-C 3 N 4 composites, which is visibly higher than that of bare M-TiO 2 (33.2 %) and g-C 3 N 4 (57.3 %). Furthermore, the selectivity of C α C β bond breakage reached 96.8 %, and the yield of benzaldehyde was as high as 86.4 %. A mechanistic study innovatively demonstrated that lignin C α C β bond cleavages are achieved by the cooperative effect between holes and 1 O 2 , where holes dominate PP-ol conversion, whereas 1 O 2 governs C α C β bond cleavages. M-TiO 2 has relatively large surface areas and high porosities, and the Z-scheme heterojunctions retard charge carrier recombination and outfit strong redox abilities, which separately prompt O 2 adsorption and evolution to generate 1 O 2 , accounting for the high selectivity of C α C β bond breakages over M-TiO 2 /g-C 3 N 4 composites. This study sheds new light on the potential of metal–organic framework-derived materials in photocatalysis and provides valuable insights into the photocatalytic cleavage of lignin C α C β bonds.
研究领域:
材料科学
·
环境科学
·
化学工程
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高影响因子
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