WATER AIR AND SOIL POLLUTION
·
2025
·Vol. 236
·期 8
·1-19
·
IF 3
Ou Qianhui,Xiong Yan,Chen Li,He Deyong,Zhou Chuxiang,Wang Lan
The nanocomposite materials are highly promising candidates for adsorption applications in dyed wastewater due to their distinctive structural properties. In this work, the nanocomposite hybrids of UiO-66@GO were first synthesized by specifically anchoring Zr-based metal organic framework (MOF) of UiO-66 onto graphene oxide (GO) nanolayer through solvothermal method. Then the composite matrix microspheres (CMMs) of UiO-66@GO were subsequently prepared by embedding the obtained UiO-66@GO nanocomposite into sodium alginate (SA) microspheres through self-assembly cross-linking process. Finally, the prepared UiO-66@GO CMMs were applied for the adsorption of organic dye pollutant and showed efficient water purification performance. As a result, the UiO-66@GO CMMs exhibited selective cationic dye adsorption for Rhodamine B (RhB + ). The experimental results revealed that the adsorption kinetics followed by the pseudo-second-order (PSD) model with rate constant k 2 = 0.95 × 10 –3 g mg −1 min −1 , and the thermodynamics followed by the Langmuir model with adsorption capacity of 345.66 mg mg −1 . Notably, the UiO-66@GO CMMs demonstrated excellent adsorption removal of a significant removal efficiency of 98% towards 10 ppm Rh-B and a rapid adsorption response time of ~ 5 min. Meanwhile, the UiO-66@GO CMMs maintained long-term stability with adsorption efficiency > 95% over 30 days and effective reuse with resorption efficiency > 90% using DMF-H₂O as eluent. In this study, SA has served as a porous supporting matrix to immobilize UIO-66@GO nanoparticles, having mitigated issues of aggregation and leaching common to nanoscale adsorbents while improving reusability. The synergistic effect between UIO-66 and GO has further enhanced pollutant adsorption capacity, demonstrating significant potential for dye wastewater treatment applications.
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JOURNAL OF CATALYSIS
·
2025
·
IF 6.5
Juan Chen,Linmeng Wang,Hongyi Gao,Rushuo Li,Zhiyuan Liu,Tao Ban,Shunzheng Zhao,Jichao Yang,Ge Wang
Single-atom catalysts (SACs) catalysts have unique electronic properties and geometric structures, offering maximum atom-utilization efficiency. Noble metal-free SACs anchored within metal–organic frameworks (MOFs) enable precise tuning of electronic structures and significantly enhance catalytic activity beyond conventional porous materials. Herein, we synthesized the synthesis of Cu(I)/Ce-MOF-808-EA by anchoring atomically dispersed Cu(II) species onto the open Ce 6 nodes of the Ce-MOF-808 framework, followed by in situ reduction to Cu(I) via ethanol treatment and thermal activation processes. The atomic dispersion and valence transformation of Cu sites on Ce-MOF-808 were confirmed by X-ray Absorption Spectroscopy (XAS), high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), and X-ray photoelectron spectroscopy (XPS). The resulting Cu(I)/Ce-MOF-808-EA exhibited outstanding catalytic performance for the hydrogenation of Dicyclopentadiene (DCPD), achieving 100 % conversion, 91.54 % selectivity toward Dihydrodicyclopentadiene (DHDCPD), and 8.45 % selectivity toward Tetrahydrodicyclopentadiene (THDCPD) at 100 °C, 2 MPa. Notably, Cu(I)/Ce-MOF-808-EA outperformed other transition metal catalysts (Co/Ce-MOF-808-EA, Ni/Ce-MOF-808-EA and Zn/Ce-MOF-808-EA). For the first time, Density Functional Theory (DFT) calculations, combined with experimental investigations, revealed a low-energy reaction pathway for DCPD hydrogenation, wherein Cu(I) sites, in cooperation with adjacent oxygen atoms, act as bi-active centers to heterolytically cleave H 2 into proton and hydride species (*H δ+ -H δ- ) for subsequent hydrogenation. This study underscores the potential of MOFs as versatile platforms for engineering single-atom catalysts with enhanced catalytic properties.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jiansheng Gao,Yan Chai,Jialun Ni,Yong Zeng,Gaoyuan Zhang,Xueling Liu,De Ning,Xinghui Jin,Huajun Zhao,Dong Zhou,Rui Gao,Wei Wu,Jun Wang,Yongli Li
The transition from conventional lithium ion batteries to high-performance solid-state lithium metal batteries faces key challenges, including the establishment of an efficient and stable ion transport network within solid-state electrolyte and the achievement of uniform lithium deposition during cycling. Herein, a flexible polymer-metal organic framework (MOF) composite solid-state electrolyte with a three-dimensional network was fabricated through coaxial electrospinning. Specifically, MOFs are uniformly dispersed on polyacrylonitrile (PAN) nanofibers, resulting in a high room-temperature ionic conductivity (1.29 × 10 −3 S cm −1 ) and lithium ion transference number (0.79) after in situ thermal polymerization. The ZIF-8 coated PAN nanofiber enhances the reduction-tolerance of PAN nanofiber membrane against lithium metal and the increased MOF loading improves the Young’s modulus of the composite electrolyte (1.31 GPa), thus preventing the formation and penetration of lithium dendrites. Consequently, the mechanically robust composite electrolyte exhibits superior rate capability in Li||Li symmetric cell and Li||LiNi 0.83 Co 0.11 Mn 0.06 O 2 cell, along with extended cycle life in Li||LiFePO 4 cell.
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Wenting Li,Wei Kang,Chengan Ye,Nina Wu,Feihong Wang,Huan Pang
Excessive discharge of uranyl ion (U(VI)-containing) wastewater poses significant environmental and human health risks due to radiological contamination. In this study, a metal–organic framework (MOF) exhibiting aerogel-like properties was synthesized by combining UiO-66-NH 2 with MXene through a freeze-drying process. The research focused on the removal of U(VI) from aqueous solutions with this aerogel material. The adsorption isotherm was consistent with the Langmuir model, and the maximum adsorption capacity was determined to be 229.1 mg∙g −1 . The aerogel-like MOF possesses a mesoporous structure, enhancing its U(VI) adsorption efficiency while enabling easy separation and maintaining structural integrity afterward. In cyclic adsorption–desorption experiments conducted over five cycles, the UiO-66-NH 2 /MXene adsorbent demonstrated a U(VI) removal efficiency exceeding 96 %. Overall, the aerogel-like MOF demonstrates outstanding U(VI) adsorption capacity and shows promise as an effective capacitive deionization (CDI) electrode for mitigating radiological contamination.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Xin Li,Xue He,Peigang Han,Pinyi Zhao,Xin Yang,Fangxun Liu,Yuxin Zhao,Tong Zhang,Genggeng Zhang,Zheng Zhang,Yuwen Wang,Wei Liu,Huan Wang
In this work, we designed and synthesized a novel MOF derived cobalt-nitrogen co-doped polyhedral carbon @ platinum nanoparticle composites (Co-N/MDPC@PtNPs) to conduct electrochemical biosensing for DNA damage marker 8-Hydroxy-2’-deoxyguanosine (8-OH-dG). Co-N/MDPC@PtNPs composite was simple to prepare and doped with various elements to enhance its catalytic performance synergistically. In this work, Co-MOF was used as a substrate material, while dopamine as a carbon source, nitrogen source and bridging agent, and wrapped on the surface of MOF by self-polymerization. Platinum ions were connected to the surface of Co-MOF by the interaction of platinum ions with polydopamine. Platinum nanoparticles were obtained using ascorbic acid as a weak reducing agent. Through high temperature calcination, Co-MOF carbonization, cobalt doping and nitrogen doping can be achieved in one step. Finally, the final material - Co-N/MDPC@PtNPs was obtained by hydrochloric acid etching. The Co-N/MDPC@PtNPs-1 shows excellent performance in the detection of 8-OH-dG. The low detection limit is 0.234 µM, the wide linear range is 0.52 µM~159.02 µM, and the sensitivity is 0.346 µA/µM. The material shows good repeatability, selectivity and stability, realizing the detection of 8-OH-dG in actual urine samples and actual damaged DNA samples, providing a new method to verify the mechanism of DNA damage. It has great significance in the field of biomedicine.
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MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 5
·1-12
·
IF 5.3
Li Na,Guo Yiqun,Wu Mengmeng,Wang Aiying,Guo Yuna,Li Yuancheng
A highly specific and ultrasensitive electrochemical immunosensor for malachite green (MG) detection in complex food matrices is presented. The sensor was constructed through a stepwise assembly process incorporating gold nanoparticles, antibodies, and metal–organic framework (MOF)-derived Pd/CuO@NiO nanocomposites. Its structure and electrochemical performance were thoroughly validated using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Key detection parameters, including pH and nanocomposite concentration, were systematically optimized to maximize sensor performance. The sensor demonstrated a broad linear detection range (10 −4 to 100 ng/mL) and an ultralow detection limit (42 pg/L). Specificity tests confirmed the immunosensor’s ability to selectively detect MG without interference from structurally similar compounds such as crystal violet, nitrofuran drugs, and chloramphenicol. Its practical applicability was verified using pretreated freshwater fish samples spiked with MG, yielding recoveries of 95%–105%. Furthermore, the results showed strong agreement with those of the conventional enzyme-linked immunosorbent assays (ELISA) method, with minimal difference ratios observed. These findings establish the immunosensor as a reliable, accurate, and rapid tool for detecting MG in food safety applications. Looking ahead, the platform’s modular design and versatility provide opportunities to extend its application to other harmful contaminants in food and environmental monitoring, contributing to broader advancements in public health and safety. Graphical abstract
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PubMed
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2025
·Vol. 39
·期 5
·e70148
·
IF 0
Han Zhang,Sisi Wang,Jingshu Ban,Hao Li,Le Ruan,Fushun Tang
In this paper, the NO adsorption performances of Ni-AIP MOF and Ni-AIP-BPY MOF synthesized by solvothermal method were compared, and the NO adsorption selectivity of two samples for the simulated flue gas conditions has also been studied. The results indicated that the Ni-AIP-BPY exhibited better NO adsorption performance with an NO adsorption capacity of 115.52 cc·g −1 at 100 kPa and ambient temperature and showed better adsorption selectivity with the highest adsorption selectivities of 937 and 10,691 for NO/CO 2 and NO/O 2 , respectively. Adsorption enthalpy calculations showed that Ni-AIP-BPY had a strong interaction force on NO, XPS and in-situ NO-FTIR results also confirmed that a strong adsorption occurred on the Ni metal center, and the main adsorptive products after NO adsorption were nitrate and nitrite. The introduction of a second ligand into the saturated coordination amine-containing complexes can improve the pore structure and coordination state of the materials, so that the complexes can activate unsaturated metal sites, thus significantly improving their adsorption and separation performance for NO gas molecules in flue gas. The results provided a new idea and understanding for the synthesis of materials for selective separation of NO components in flue gas.
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MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 5
·1-13
·
IF 5.3
Cao Xiaodong,Zhang Chenlu,Xu Yunan,Wang Wei,Hu Huiying,Chen Keji,Yang Jing,He Shudong,Sun Hanju,Ye Yongkang
An electrochemical biosensor using gold nanoparticles (AuNPs)-doped bimetallic-organic framework (BMOF) with enhanced peroxidase-like activity was constructed to detect Salmonella Typhimurium ( S. typhimurium ). The BMOF of CuZr-MOF was synthesized via a two-step method and used as carrier to in situ immobilize AuNPs. Due to the stability of Zr-MOF, the good electrocatalytic ability of Cu (II), and the synergetic effects of AuNPs, Cu (II) and Zr (IV), the prepared AuNPs@CuZr-MOF nanozyme showed improved stability and catalytic activity to H 2 O 2 oxidation. The oxidation reaction was found to be a surface-controlled process of electron transfer and a pH-dependent electron transfer process of oxidation reaction involving two electrons. Further, AuNPs@CuZr-MOF was biofunctionalized with signal DNA probe, forming sDNA-AuNPs@CuZr-MOF nanotags. The biosensing platform was constructed on a glassy carbon electrode modified sequentially with electrodeposited AuNPs, capture DNA probe (cDNA), and BSA. Finally, a sandwich-type detection structure was formed by hybridization reactions between cDNA and target invA gene of S. typhimurium , as well as between invA gene and the sDNA of sDNA@AuNPs@CuZr-MOF nanotags. Under optimized experimental conditions, the biosensor achieved a linear range of 1 × 10 −16 to 1 × 10 −8 mol L −1 for the target invA gene with a detection limit (LOD) of 6.2 × 10 −17 mol L −1 using differential pulse voltammetry measurement (DPV). It was successfully applied to the direct and quantitative detection of invA gene segments in total DNA extracts of S. typhimurium , showing a linear range from 3.5 to 3.5 × 10 6 CFU mL −1 and a LOD of 0.82 CFU mL −1 . The fabricated biosensor exhibited good selectivity, reproducibility, and storage stability, enabling its use for the detection of invA gene segments in contaminated milk, with recoveries between 95.9% and 103.1%. Graphical
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PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Ziyu Tang,Chuanlin Mou,Yadong Li,Shihao Chen,Xianmin Yang,Xu Ding,Hongbo Deng,Linyuan Wang
Here, we report a controllable strategy for fabricating monodispersed microspheres composed of poly(butyl methacrylate) (BMA) and silane-modified Cu/Ni-embedded metal-organic framework (MOF)-TiO₂ composites (denoted as BMA@Cu/Ni@MOF-TiO₂ microsphere) for efficient photocatalytic degradation. Monodispersed oil-in-water (O/W) emulsion templates are prepared by a microfluidic device, which contain silane-modified Cu/Ni@MOF-TiO2 in oil phase. Utilizing benzildimethyl ketal (BDK) as a photoinitiator, porous microspheres can be obtained through a straightforward photopolymerization process initiated by ultraviolet light. When the concentration of the surfactant polyglycerol polyricinoleate (PGPR 90) is 14% (w/v) and the crosslinker trimethylolpropane trimethacrylate (TMPTMA) is 12% (w/v), the BMA@Cu/Ni@MOF-TiO2 microspheres have good monodispersity, and the average diameter is 180.7 μm and coefficient of variation (CV) is 3.64%. When silane-modified Cu/Ni@MOF-TiO2 loading is 0.4% (w/v), the removal rate to methylene blue (MB) is up to 96.2% in 20 min, which is higher than that of powdered (86.6%). Under the optimal conditions, the removal rate of methylene blue reached 99.3% within 50 minutes. Moreover, after 5 cycles of testing, the degradation efficiency remained above 97.94%,, which strongly demonstrated the reusability of BMA@Cu/Ni@MOF-TiO2 microspheres. The photocatalytic mechanism involves the generation of electron-hole pairs in Cu/Ni@MOF-TiO2 under light irradiation, which react with O2 to produce reactive oxygen species (ROS) to degrad MB. The characterization results of XPS, and FTIR show that the silane-modified Cu/Ni@MOF-TiO2 is successfully loaded into the microspheres. BMA@Cu/Ni@MOF-TiO2 microspheres have a specific surface area of 5.962 m2/g and a specific volume of 2.491 cm3/g, providing sufficient diffusion channels and active sites for MB dyes. Therefore, BMA@Cu/Ni@MOF-TiO2 microspheres have excellent recyclability, high stability and attractive photocatalytic degradation efficiency, and show potential application prospects in the future treatment of dye wastewater.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Qing Kang,Tong Lin,Jingbo Jiao,Yidi Liu,Yurong Guo,Chenjing Ma,Xinjun Du,Shuo Wang
Salmonella typhimurium ( S. typhimurium ) contamination has become the main source of foodborne diseases and has substantial effects on human well-being. Herein, we present a nucleic acid-responsive colorimetric biosensor for ultrasensitive detection of S. typhimurium , integrating a multifunctional Fe 3 O 4 @Zr-MOF/GOx nanoprobe with exponential amplification reaction (EXPAR). The system integrates glucose oxidase (GOx) encapsulated within a Zr-based metal-organic framework (Zr-MOF) modified with magnetic Fe 3 O 4 nanoparticles. In the presence of S. typhimurium , the EXPAR reaction is triggered, and the controlled release of GOx is achieved by DNA strand displacement. The detection mechanism leverages GOx-catalyzed glucose oxidation to generate H 2 O 2 , which oxidizes 3,3’,5,5’-tetramethylbenzidine (TMB) for colorimetric signal readout. The biosensor demonstrates high specificity for S. typhimurium , with a detection limit of 2.26 CFU mL⁻¹ , and practical applicability in spiked milk samples, achieving recoveries of 89.6–111.5 %. The strategy employing stimuli-responsive DNA/MOF composites demonstrated significant potential in food quality monitoring and analysis.
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JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2025
·
IF 3.1
Li Kaiqian,Zhang Xupeng,Li Xianghong,Chang Qiaowen,Deng Shuduan,Zhu Gang
Introducing novel bimetallic metal–organic frameworks (Cu/Zr-MOF) into wood cellulose scaffolds via an in situ growth strategy represents an effective approach to enhance the fire retardancy of wooden products. This work evaluates the effects of Cu/Zr-MOF loading content embedded in wood composite on the MOF morphology and flame retardancy of natural wood (NW). We discovered that MOF loading has a significant impact on the morphology of Cu/Zr-MOF. Specifically, with an increase in the amount of MOF precursors, the morphological transformation is from spherical to regular octahedra. Furthermore, the incorporation of high MOF loading remarkably enhanced the thermal stability at the early stage and exhibited significantly improved residual content. With 24 mass% loading of Cu/Zr bimetallic MOF, the highly flame-retardant wood composite (Cu-U-W-3) was obtained. Compared to pure NW, the peak heat release rate (pHRR) and total heat release (THR) were reduced to 25.25 W g −1 and 5.0 kJ g −1 , respectively. The limiting oxygen index (LOI) of the treated sample reached 24.81%, showing outstanding self-extinguishing ability. According to the char residue analysis, it was found that Cu-Zr bimetallic MOF anchored on the cell wall exhibited catalytic carbon-forming effect, thereby facilitating the generation of high-quality residual char. The enhanced fire safety of natural wood can be attributed to the oxygen barrier and the reduced heat transfer characteristics of the dense carbon layer. This work presents a novel methodology for the fabrication of bimetallic MOF hybrid flame retardants, with the objective of enhancing the flame retardancy of wooden products.
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Defence Technology
·
2025
·
IF 5.9
Mingcheng Ge,Xian Xu,Ze Su,Ye Zhong,Binfang Yuan,Huisheng Huang,Jianguo Zhang,Zhimin Li
Combustion catalyst is a key modifier for the performance of composite solid propellant. To exploit high-efficiency combustion catalyst, a fascinating bimetallic metal-organic framework [MnCo(EIM) 2 (DCA) 2 ] n (1) was constructed by an active dicyandiamide (DCA) linker, Mn 2+ , Co 2+ centers, and an 1-ethylimidazole (EIM) ligand. 1 possesses good thermal stability ( T p = 205 °C), high energy density ( E g = 24.34 kJ/g, E v = 35.93 kJ/cm 3 ), and insensitivity to impact and frictional stimulus. The catalytic effects of 1 contrasted to monometallic coordination compounds Mn(EIM) 4 (DCA) 2 (2) and Co(EIM) 4 (DCA) 2 (3) on the thermal decomposition of AP/RDX composite were investigated by a DSC method. The decomposition peak temperatures of AP and RDX of the composite decreased to 335.8 °Cand 206.4 °C, respectively, and the corresponding activation energy decreased by 27.3% and 43.6%, respectively, which are better than the performances of monometallic complexes 2 and 3. The gas products in the whole thermal decomposition stage of the sample were measured by TG-MS and TG-IR, and the catalytic mechanism of 1 to AP/RDX was further analyzed. This work reveal potential application of bimetallic MOFs in the composite solid propellants.
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