JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yutuo Hua,Xiaofeng Shang,Xingmin Liu,Zhan Gao
In modern society with advanced electronic communication technology, electromagnetic wave absorbers are crucial in military and daily life. As electronic devices update rapidly, there's a need for absorbers with stronger absorption, wider bandwidth, and lighter weight. Emerging two-dimensional MXenes, with excellent dielectric properties and a unique nanosheet structure, have great microwave absorption potential. However, their practical use is limited by impedance mismatch due to high conductivity, causing poor reflection loss. To solve this, we report a novel NiO/NiFe₂O₄@Ti₃C₂Tₓ composite made by simple coprecipitation and 2-hour annealing at 400°C. Core-shell NiO/NiFe₂O₄ nanocubes were evenly anchored on MXene nanosheets, introducing magnetic loss mechanisms and modulating dielectric response via defect engineering. The NiO/NiFe 2 O 4 @Ti 3 C 2 T X composite material reached a minimum reflection loss of −46.05 dB at 16.83 GHz, and the effective absorption bandwidth (EAB) was 6.39 GHz at a thickness of 2.2 mm. This work offers a new strategy for designing high-performance microwave absorbers for aerospace stealth coatings.
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Advanced Science
·
2025
·
IF 14.1
Dongsheng Huang,Shuailong Guo,Peng Chen,Yanan Liu,Zhenhua Wang,Ye Ding,Hao Li,Huijun Wu,Zhiyuan Ma,Haoqing Jiang,Lijun Yang,Hongxing Xu
Single crystals with excellent properties have been widely used in electronics industries due to their homogeneous and consistent structures. Metal-organic frameworks (MOFs), as a class of crystalline materials that can be synthetically tuned for functionality, are expected to be a favorable candidate for novel electronic devices. However, there is still a lack of methods to efficiently fabricate conductive patterns at the single-crystal scale. Here, laser instant writing of in situ continuous conductive interface on MOF single crystals is reported, enabling the patterning and continuous fabrication of conductive interface at the single-crystal scale. Carbon-wrapped Cu nanoparticles (Cu@C NPs) conductive interface is instantly written using a 1030 nm picosecond ultrafast laser on large HKUST-1 single crystals. It is found that different thermal accumulations can affect the conductivity of Cu@C and transformation of matter phase from Cu NPs to Cu 2 O on single crystals is observed as the ablation of carbonaceous materials. As a validation, single-crystal sensor with interdigitated electrodes (IDEs) constructed by laser interface technique shows a wide response range of 5%–90% RH and a fast response time of 2 s toward humidity sensing. This method sheds new light on the construction of functional interface on single MOF crystal, providing a novel strategy for MOF-based electronics.
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高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Yuanyuan Zhang,Jin Xu,Qi Cheng,Zuyao Fu,Jing Xie,Zhaoyang Ding
Capsaicin serves as a specific marker for the identification of gutter oil. High-performance liquid chromatography (HPLC) is usually used to detect the capsaicin which is time-consuming and often fails to meet the detection requirements. Hence, establishing precise and swift methods for capsaicin detection is essential to safeguard food safety. In this study, a ratiometric fluorescence aptasensor (Zr-MOF@Apt) based on a zirconium-based nanoflower metal-organic framework (Zr-MOF) was innovatively constructed through the Zr-O-P bond for the high-sensitivity and high-selectivity detection of capsaicin. This aptasensor integrates the intrinsic advantages of both Zr-MOF and nucleic acid aptamers. The binding affinity of the Zr-MOF@Apt aptasensor for capsaicin was determined by isothermal titration calorimetry (ITC) experiment, with a Kd value of 111 ± 25.9 nM. The affinity of the aptasensor to capsaicin was much higher than that of free nucleic acid aptamers. Between 0.5 and 120 ng·mL −1 , the Zr-MOF@Apt aptasensor exhibited excellent linearity and a detection limit as low as 1.34 ng·mL −1 , achieving sensitive detection of capsaicin. This aptasensor has a low detection limit, high sensitivity and good stability, providing an important tool for accurately detecting harmful substances in food.
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JOURNAL OF MEMBRANE SCIENCE
·
2020
·
IF 7.183
Guining Chen,Xi Chen,Yang Pan,Yufan Ji,Gongping Liu,Wanqin Jin
Mixed-matrix membranes (MMMs) based on metal-organic frameworks (MOFs) molecular sieves have been extensively studied in gas separation due to the high performance and good compatibility of MOF with polymers. In this work, 6FDA-based polyimides MMMs incorporating M-gallate (M = Ni, Co, Mg) MOF particles were fabricated for the first time and investigated for ethylene/ethane (C 2 H 4 /C 2 H 6 ) separation. By reducing synthesis temperature and introducing agitation, the Ni-gallate particles synthesized in flask (Ni-gallate(F)) with optimized conditions are smaller than Ni-gallate synthesized in autoclave (Ni-gallate(A)). The particle size was reduced from ~7 μm (Ni-gallate(A)) to ~0.8 μm (Ni-gallate(F)), which enables the formation of uniform MMMs. Because of the better compatibility with polyimide and higher adsorption performance of Ni-gallate than Mg-gallate and Co-gallate, the 6FDA-DAM MMM containing Ni-gallate(F) was capable of simultaneously improving C 2 H 4 /C 2 H 6 selectivity and C 2 H 4 permeability whereas the MMM with Mg-gallate(F) or Co-gallate(F) failed in performance enhancement. The 6FDA-DAM MMM with Ni-gallate(F) loading of 20% exhibited optimal C 2 H 4 /C 2 H 6 separation performance that surpassed the upper-bound of pure polymers. Detailed analysis of sorption and diffusion coefficients suggested that the enhanced transport properties in Ni-gallate(F) MMMs were attributed to the increase of sorption coefficient provided by the higher C 2 H 4 sorption capacity and selectivity, as well as the favorable gas diffusivity via moderately confined pores of the incorporated Ni-gallate(F) fillers.
研究领域:
材料科学
·
化学工程
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2025
·
IF 4.6
Jianlong Gu,Yuchen Liu,Jieyun Cai,Jie Long,Jing Ma,Zilong Zhang,Bing Yang,Hongming Meng,Yaling Yang,Li Gao
In this study, a colorimetric detection system for Cr(III) was established by leveraging the laccase-mimicking activity of two-dimensional Cu-based metal-organic frameworks (Cu-MOFs) modified with polydopamine (PDA) nanomaterials (Cu-MOF@PDA), through which Cr(III) specifically inhibits the catalytic performance. The Cu-MOF@PDA composite exhibited significant laccase-mimicking activity, enabling the oxidation of 2,4-dichlorophenol (2,4-DP) and 4-aminoantipyrine (4-AP), leading to the generation of a red-colored compound. Notably, the laccase-like activity of Cu-MOF@PDA was substantially enhanced under ultrasonic (US) stimulation. Free-radical trapping experiments revealed that the levels of singlet oxygen ( 1 O 2 ) and hydroxyl radicals ( OH) were markedly increased, while the electron transfer rate was accelerated, thereby boosting catalytic efficiency under US exposure. The research confirmed that Cr(III) binds to Cu-MOF@PDA, leading to the suppression of its catalytic activity. A strong linear correlation (R 2 = 0.995) was observed between the absorbance at 505 nm and Cr(III) concentrations ranging from 0.67 to 54.17 μg/L, with a low detection limit (LOD) of 0.26 μg/L (S/N = 3). The developed approach was effectively utilized for the analysis of Cr(III) and total Cr in cigarette tipping paper samples, yielding highly satisfactory results.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Shan Li,Longlong Zhang,Bin Xu,Weihua Qin,Mengdan Wang,Bingli Pan,Hongyu Liu,Honggang Wang
Nanoparticles are of great significance to enhance tribological performances and can be employed as effective lubricant additives. 1T-MoS 2 has been widely applied in many fields. However, it is rarely studied in lubrication application. In this study, a novel core-shell lubricant additive was prepared by combining CuNi-MOF and 1T-MoS 2 via a facile hydrothermal method. The as-prepared CuNi-MOF@1T-MoS 2 exhibited a flower-like structure. Both experimental and theoretical calculation results showed the interlamellar interactions between the layered 1T-MoS 2 and CuNi-MOF sheets. Tribological properties of PEG200 containing CuNi-MOF@1T-MoS 2 were systematically investigated by a four-ball test machine. In comparison with PEG200, the friction coefficient and wear scar diameter were remarkably reduced by 56.8 % and 34.0 %, respectively. Therefore, the combination of 1T-MoS 2 and CuNi-MOF presents a promising candidate for enhancing the tribological properties of PEG200.
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ACS Omega
·
2026
·
IF 4.3
Yutong Feng,Hui Sun,Xinyu Liu,Huiping Wu,Gaoyuan Chen,Afang Gao,Shijie Wang,Jiahui Zhou,Bin Yu
Flexible electrochemical sensors based on noninvasive materials can continuously monitor blood glucose levels in sweat, making them ideal for personal diabetes management intelligent devices. It is necessary to construct sweat glucose electrochemical sensors that have the ability to both adjust to human skin and reliably monitor. We first synthesized nickel/cobalt metal–organic framework material (Ni/Co-MOF) nanosheets via a solvent-thermal approach. Then, an oil-based polyurethane (OPU)/polypropylene spun-bonded nonwoven fabric (PPSF) was obtained by coating the surface of PPSF. Silver/silver chloride (Ag/AgCl) paste and conductive carbon (C) paste were printed layer-by-layer on the surface of the OPU/PPSF by screen printing, followed by the immobilization of Ni–Co/MOF nanosheets on the working area using a Nafion solution to form a Ni/Co-MOF@OPU/PPSF flexible glucose sensor for continuous monitoring of glucose in sweat. This Ni/Co-MOF@OPU/PPSF flexible glucose sensor retained the high electrocatalytic activity of Ni/Co-MOF for glucose oxidation and exhibited high sensitivity (159.9 μA/mM·cm2), low limit of detection (LOD) (2 μM), and a wide linearly glucose-monitoring range (10 μM–1 mM). Compared to other nonenzymatic sensors, our Ni/Co-MOF@OPU/PPSF flexible glucose sensor has better immunity than other substances present in sweat. Meanwhile, the Ni/Co-MOF@PPSF flexible glucose sensor not only monitors the glucose in sweat at different body temperatures but also maintains good mechanical flexibility and stable electrochemical properties under bending conditions. It is suggested that our flexible glucose sensor can be used for continuous monitoring of glucose in human sweat. Overall, our glucose sensor can be used for the continuous monitoring of glucose in human sweat.
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CARBON
·
2026
·
IF 12.7
Zhipeng Yu,Na Zhang,Yifei Feng,Zhaoxia Wang,Wei Du,Xiaoyu Zhang,Fushan Li,Runhua Fan,Xiaojiao Han,Lina Xu
The creation of broadband, lightweight, and extremely effective electromagnetic wave absorbers (EWA) is crucial to solving the problem of electromagnetic pollution. In this work, a surface-functionalized three-dimensional (3D) porous sugarcane aerogel with ZIF-67-derived Co/C (Co/C@SCA) was successfully synthesized via a hydrothermal method and pyrolysis. The ZIF-67 loading on SCA was controlled to modulate the dielectric properties, achieving optimal impedance matching and electromagnetic attenuation. Therefore, the Co/C@SCA exhibits minimum reflection loss ( R L m i n ) of −47.02 dB at a thickness of 3.0 mm and an effective absorption bandwidth ( E A B , R L <-10 dB) of 7.20 GHz at a thickness of 4.8 mm. This outstanding performance is attributed to its three-dimensional porous framework, along with abundant heterogeneous interfaces and well-engineered surface functionalization introduced during synthesis. This work suggests a practical method for exploiting biomass waste to create innovative, high-performance, low-cost materials that absorb electromagnetic waves (EMW).
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Liming Liu,Xuehui Jia,Jingyu Bao,Xinqi Luan,Changhao Li,Chi Xu,Liqin Zhou,Jianmin Chen,Zhaowei Jia,Ruimeng Wang,Zhongxing Zhao,Zhenxia Zhao
Metal-organic framework (MOF)/photothermal composites typically suffer from the intrinsic trade-off between adsorption capacity and photothermal regeneration efficiency, limiting their synergistic adsorption-desorption performance. Cu-based MOF (HKUST-1) crystals were grown on photothermal inverse opal polypyrrole (IOPPy) with abundant surface pyrrole N sites (metal coordination) by microwave-assisted in-situ method and successfully constructed IOPPy(Cu)@HK-M. The abundant N-Cu-O interface bridging in IOPPy(Cu)@HK-M ensured ultrahigh MOF loading (90 wt%) and induced the formation of unsaturated Cu and interface micropores. It enhances toluene capture capacity (1.5 times, P / P 0 = 0.0026) and adsorption kinetics (1.8 times) compared to HKUST-1. During photothermal desorption process, photon localization effect of inverse opal structure significantly enhances the photothermal conversion efficiency to 54%, which is 2.2 times of HKUST-1. The inverse opal structure also promotes efficient energy transfer throughout the system after light conversion and reduces internal temperature gradient, and act on MOFs via N-Cu-O interface, thereby accelerating the desorption of toluene within the MOFs. Hence, IOPPy(Cu)@HK-M achieves a remarkable 99.7% desorption ratio and 2.9 times desorption rate versus HKUST-1 under same energy input. The construction of inverse opal-MOF successfully achieves synergistic enhancement of toluene adsorption/desorption with high efficiency and low energy consumption by reinforcing photothermal conversion efficiency and mass/heat transfer capabilities.
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CELLULOSE
·
2023
·Vol. 30
·期 16
·10427-10436
·
IF 5.7
Wu Yuhang,Li Yuwen,Zheng Yanchun,Yao Juming,Gao Junkuo
Metal–organic frameworks (MOFs) have received widespread attention in recent years. However, the powder form of MOFs limits their large-scale applications. To facilitate the application of MOFs, mass production and shaped manufacturing of MOFs is significantly effective. Herein, a generic method based on a simple polymerization technique is proposed to prepare highly porous MOF–cellulose composite beads and the application of these composite beads in dye removal and recovery is displayed. Non-toxic solvent water and biodegradable sodium carboxymethylcellulose (CMC) were used as raw materials in the synthesis method. In addition to maintaining the crystallinity and porosity of the MOFs embedded in the cellulose matrix, the unique three-dimensional lamellar interconnected structure provides good mechanical properties for the composite beads. To demonstrate the practicality of these composite beads, a recycling processing system was built as a proof-of-concept device. MIL-100/CMC-HD can effectively degrade more than 95% of the dye and can be recycled multiple times. The superiority of the MOF–cellulose composite beads is highlighted by their ease of recycling and storage compared to MOF powder. Graphical abstract MOF/carboxymethylcellulose porous composite beads are synthesized in a simple one-step process. The lamellar interconnected structure not only facilitates the diffusion of contaminants in water but also provides good mechanical properties.
研究领域:
材料科学
·
环境科学
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ANALYTICAL CHEMISTRY
·
2026
·
IF 7.3
Jingyi Yu,Mei Xiang,Mingqun Li,Sicong Zeng,Jicheng Cai,Zhiqiang Mao,Fan Zhang
Developing highly efficient and robust membrane systems for the selective identification and screening of chiral drugs is an exceptionally challenging task. Herein, we report that functional metal–organic framework (MOF)-packed nanochannels can serve as an excellent chiral recognition platform for enantioselective detection and separation of chiral drugs. Through the precise regulation of the nanoconfinement size and the anchoring of cyclodextrin active sites, the functionalized nanochannel membrane exhibits high enrichment efficiency and enables the highly selective detection of l-penicillamine, as demonstrated by monitoring the transmembrane ionic current signature. Importantly, the engineered nanochannel membrane system can be further utilized for highly efficient racemic penicillamine separation, achieving a remarkable enantiomeric excess (ee) value of up to 89.88%. This research not only puts forward an innovative strategy to establish versatile chiral sieving devices by manipulating the well-defined functional materials but also offers valuable insights for the development of high-performance membranes to meet the demands of chiral drug separation and wide practical applications.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2018
·Vol. 29
·期 10
·8535-8546
·
IF 2.324
Xiao Jia,Diao Kaidi,Zheng Zhou,Cui Xudong
We report a facile strategy to synthesize porous ZnO/Co 3 O 4 composites by direct pyrolysis of the metal–organic frameworks (MOFs) precursor and their applications to the sensing of acetone at ppb–ppm level. The as-prepared ZnO/Co 3 O 4 sample exhibits enhanced sensitivity (15.17 ppm −1 ), high selectivity towards low-concentration acetone when compared with pure ZnO. The enhancement in gas sensing performance of ZnO/Co 3 O 4 sample could be attributed to the unique porous structure, the p -Co 3 O 4 / n -ZnO junctions effect and the catalytic activity of Co 3 O 4 . The studies might open intriguing perspectives for the design of porous p/n composites for high performance gas sensing applications.
研究领域:
材料科学
·
气体传感
·
纳米材料
·
化学传感器
·
无机化学
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危险品化学品经营许可证（带存储）