INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2019
·
IF 4.084
Yongqing Wang,Zhiqiang Lan,Xiantun Huang,Haizhen Liu,Jin Guo
Using a deposition-reduction method, Mg/MOF nanocomposites were prepared as composites of Mg and metal-organic framework materials (MOFs = ZIF-8, ZIF-67 and MOF-74). The addition of MOFs can enhance the hydrogen storage properties of Mg. For example, within 5000 s, 0.6 wt%, 1.2 wt%, 2.7 wt%, 3.7 wt% of hydrogen were released from Mg, Mg/MOF-74, Mg/ZIF-8, Mg/ZIF-67, respectively. Activation energy values of 198.9 kJ mol −1 H 2 , 161.7 kJ mol −1 H 2 , 192.1 kJ mol −1 H 2 were determined for the Mg/ZIF-8, Mg/ZIF-67, Mg/MOF-74 hydrides, which are 6 kJ mol −1 H 2 , 43.2 kJ mol −1 H 2 , and 12.8 kJ mol −1 H 2 lower than that of Mg hydride, respectively. Moreover, the cyclic stability characterizing Mg hydride was significantly improved when adding ZIF-67. The hydrogen storage capacity of the Mg/ZIF-67 nanocomposite remained unchanged, even after 100 cycles of hydrogenation/dehydrogenation. This excellent cyclic stability may have resulted from the core-shell structure of the Mg/ZIF-67 nanocomposite.
研究领域:
材料科学
·
化学工程
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产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2025
·
IF 2.6
Chonglin Wang,Peng Gao,Xiang Yao,Xiaohui Sun,Hong Du
Metal-organic framework (MOF) materials have been extensively utilized as catalysts for the oxygen evolution reaction (OER) due to their remarkable properties. To enhance electrocatalytic performance, the modifying MOF materials has emerged as a significant research area. In this study, we synthesized MIL-100(Fe), and MOF-74(Co) MOF materials on the surface of NiCo-ZIF using 2,5-dihydroxyterephthalic acid as the ligand , successfully obtaining a ternary MOFs composite material designated as NiCo-ZIF@MM. Experimental results demonstrated that the NiCo-ZIF@MM composite formed a heterogeneous structure, which significantly enhanced electron transport efficiency and catalytic activity. Additionally, this novel material exhibits a larger electrochemical active surface area and excellent stability. Notably, the overpotential of NiCo-ZIF@MM is reduced to 190 mV at a current density of 10 mA/cm2. This study not only achieves effective modification of ZIF materials but also provides a new strategy for the development of highly efficient and stable MOF-based OER catalysts.
研究领域:
材料科学
·
电化学
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催化
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纳米技术
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无机化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
·
IF 9
Chenguang Qian,Fang Yuan,Yi Wen,Hang Li,Jialin Liang,Yihan Xu,Xiaohan Li,Gaofeng Wang,Chunquan Li,Zhiming Sun
The synchronous enhancement of CO 2 adsorption capacity and desorption efficiency while reducing material costs, remains a major challenge in CO 2 capture technology. Metal–organic frameworks (MOFs) are frequently hindered by high synthesis costs, structural instability, and poor regenerability. Herein, MOF-74(Ni)@sepiolite (MOF-74(Ni)@SEP) composites with hierarchical pore structures are prepared via an in-situ hydrothermal method. Naturally abundant SEP serves as a morphology modulator, reducing energy barriers and facilitating crystal growth, thereby lowering synthesis costs. Additionally, SEP acts as a structural scaffold, anchoring onto the surface of MOF-74(Ni) to enhance thermal stability and construct a hierarchical pore network. Compared to pure MOF-74(Ni), the composite exhibits faster CO 2 diffusion and improved mass transfer, as confirmed by zero-length column (ZLC) analysis. Benefiting from these structural advantages, 2-MOF-74(Ni)@SEP-(100 °C,16 h) demonstrates excellent cycling stability, maintaining over 98 % of its CO 2 adsorption capacity after 10 cycles. Even under simulated flue gas conditions (338 K, humid and oxygen-containing), the composite maintains high CO 2 uptake, confirming its superior thermal and moisture tolerance. Mechanistic analysis reveals preferential coordination of CO 2 with Ni 2+ Lewis acid sites, while the hierarchical pore structure facilitates CO 2 desorption performance. This work provides a cost-effective and scalable pathway toward CO 2 capture under realistic industrial conditions.
研究领域:
材料科学
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环境工程
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碳捕集与封存
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金属有机框架材料（MOFs）
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多孔材料
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产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2025
·
IF 4.6
Xiulian Yin,Yingjin Li,Mingjie Wei,Yanni Ji,Qinghua Cao,Xiangfen Xue
Spectral retrieval method plays a crucial role in spectral analysis technology. Nevertheless, research in this area has not received the requisite advancement for fluorescence excitation-emission matrix (EEM) spectroscopy, which has been widely used in environmental monitoring and other fields. In this work, we developed a spectral retrieval method, the contour line-based image pattern recognition (CLIPR) technique, to interpret the EEM spectrum. A three-level retrieval mechanism, including the primary feature Lib1, qualitation Lib2 and quantitation Lib3 has been set up. Optimization efforts have been conducted on the accuracy and efficiency of noise removing, feature extraction and image retrieval methods. To demonstrate the technique, four model pollutants with very similar chemical structures and a metal-organic framework (MOF), MOF-74 (Zn), as a fluorescence probe providing more dimensional information were used. A total of 28 × 4 EEM map images were modeled and validated using the leave-one-out cross-validation method. Two batches with 5 × 4 samples each as unknown samples were selected to evaluate the performance of the CLIPR method. When taking the weight value set with 0.8, 0.1 and 0.1, for the validation sets with the concentration greater than 50 μM, the intra class similarity is above 79.61 % and the accuracy reached 98.81 % (83/84). The best quantitative result is PhNH 2 -S1, with the RMSE/True value 3.09 % and R 2 0.99. For the unknown sets, when Batch 1 greater than 35 μM and Batch 2 greater than 50 μM, the recognition accuracy reaches 100 %. The research results indicate that the model has a certain degree of stability and generalization and it is feasible to apply spectral retrieval method to interpret EEM information. We have taken a step forward in laying the foundation for large-scale reference data preparation in this field.
研究领域:
光谱分析
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环境监测
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模式识别
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荧光光谱技术
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化学传感
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2020
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IF 4.825
Mengyang Zhang,Wei Xu,Tingting Li,Honglin Zhu,Yueqing Zheng
Multivariate metal–organic frameworks (MTV-MOFs) have drawn much attention in recent years for their promising applications in many fields of chemistry and materials. Constructing functional MOFs from multiple components for electrochemical water is crucial to high performance renewable energy storage and conversion devices. In this work, a series of bitmetallic-, trimetallic-, and tetrametallic-MOF-74/NFs were grown in situ on nickel foam (NF) by a facile solvothermal route. Specifically, the optimized FeCoMnNi-MOF-74/NF with a multilevel and hollow nanostructure was successfully fabricated and used as highly efficient bifunctional electrocatalysts for water splitting. It exhibited an ultralow overpotential of 250 and 108 mV to achieve the current density of 50 and 10 mA cm–2, along with the relatively small Tafel slope of 41.28 and 72.89 mV dec–1 for OER and HER in 1 M KOH, respectively. It is superior to other multimetallic-MOF-74 composites at the same condition and also surpasses the benchmark of commercial noble-metal catalysts as well. As a result, a low cell voltage of ca. 1.62 V was obtained at a current density of 10 mA cm–2, when tetrametallic FeCoMnNi-MOF-74/NF is employed as both anode and cathode electrodes for the real water splitting. The present work potentially provides a new insight into prospecting and designing multivariate MOFs as a promising material for efficient electrocatalysis in the practical application.
研究领域:
材料科学
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电化学
·
可再生能源
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MARINE POLLUTION BULLETIN
·
2023
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IF 5.8
Liuqin Zhang,Huali Li,Xiaohu Zhang,Qiuping Li,Guangyu Zhu,Fa-Qian Liu
We developed a marine coating consisting of Cu-MOF-74, multi-walled carbon nanotube containing carboxyl groups (MWCNT-COOH) and self-healing polymers, which simultaneously possesses self-healing and anti-biofouling properties. Cu-MOF-74 can stably release Cu 2+ by virtue of the coordination dissociative mechanism. Studies have proved that MWCNT can inhibit the growth of bacteria, so adding the MWCNT can help to reduce the amount of the copper ions and ensure the antibacterial effect of the coating. In addition, the cross-linked network and abundant -COOH provided by the polymers and MWCNT-COOH further prevent the loss of copper ions. Moreover, the coating we prepared has good performance of self-healing at room temperature or slightly heated because the polymers possess abundant non-covalent hydrogen bonds . Finally, the coating not only has superior antibacterial property , but also effectively prevents the adhesion of macrofouling organism. Therefore, the coating has a longer service life and its environmental friendliness has also been improved.
研究领域:
材料科学
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海洋工程
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化学工程
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环境科学
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产品关联
DOI
PubMed
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2026
·
IF 4.1
Wang Ying,Yan Yiting,Zhang Jun,Yang Lin,Liu Fanghua,Tan Chao,Jiang Xue
p-Benzoquinone (PBQ), as a key toxic derivative of benzene, is widely present in industrial wastewater and the production and manufacturing of daily chemicals. Long-term exposure poses a serious health threat, making the development of rapid and sensitive on-site detection technologies highly significant. Electrochemical methods, due to their simple operation, high sensitivity, and ease of miniaturization, are an ideal approach for detecting PBQ. Co-MOF-74 is extensively used in the electrochemical field because of its structural stability, tunable metal nodes, and large surface area, but its low conductivity limits further applications. In this study, Co-MOF-74 was rapidly synthesized using dielectric barrier discharge (DBD) microplasma technology, and then the large π-conjugated organic ligand HATP was introduced for ligand engineering to successfully prepare Co-MOF-74-HATP. This synthesis strategy is not only efficient, but also the introduction of HATP effectively regulates the material’s electronic structure, significantly enhancing its conductivity and electrocatalytic activity. The electrochemical sensor employs chronoamperometric detection at −0.15 V (vs. Ag/AgCl) and exhibits excellent performance for PBQ, featuring two wide linear ranges (17–1602 µM and 1602–5602 µM) with corresponding sensitivities of 1440 µA·mM −1 ·cm −2 and 497.8 µA·mM −1 ·cm −2 , a low limit of detection (LOD) of 3.43 µM ( S / N = 3), and good reproducibility (RSD < 3.0%). It was successfully applied to the detection of PBQ in actual water samples with recoveries ranging from 90.5% to 102.32%. This work expands the synthesis of ligand-functionalized MOFs through DBD microplasma technology and applies them to the electrochemical detection of PBQ in water samples. Graphical abstract
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产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2019
·Vol. 186
·期 7
·1-10
·
IF 5.479
Zhang Yanshu,Hu Yufei,Li Gongke,Zhang Runkun
Core-shell nanoparticles (NPs) consisting of a gold core and a metal-organic framework shell (type MOF-74) were synthesized via one-pot synthesis. The NPs exhibit highly sensitive and stable SERS activity for the detection of 4-nitrothiophenol, with a specific band at 1337 cm −1 . The method has a linear response in 0.10–10 μmol·L −1 analyte concentration range and a lower detection limit of 69 nmol·L −1 . The potential application of this novel SERS substrate was evaluated by two model reactions involving 4-nitrothiophenol. The first involves in-situ SERS monitoring of the surface plasmon-induced nitration of aromatic rings without adding conventional acid catalyst. The second involves the photocatalytic reduction of 4-nitrothiophenol to 4-thioaminophenol in the presence of Au/MOF-74 under 785-nm laser irradiation. The plasmon-assisted dimerization of 4-nitrothiophenol to form 4,4′-dimercaptoazobenzene can also be monitored simultaneously.
Schematic presentation of a nanoparticle SERS substrate consisting of gold core and MOF-74 shell, which was applied to detection of 4-nitrothiophenol. The Au/MOF-74 was successfully used for in-situ monitoring of two model reactions involving 4-nitrothiophenol by SERS.
研究领域:
分析化学
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纳米材料科学
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光谱学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2019
·
IF 5.108
Xin Ning,Yuhan Sun,Heyun Fu,Xiaolei Qu,Zhaoyi Xu,Shourong Zheng
Metal-organic frameworks (MOFs) have received significant attention as promising precursors or sacrificial templates in the preparation of porous carbon supported catalysts. In this study, N-doped porous carbon supported Ni catalysts (denoted as Ni/NC) were prepared using furfuryl alcohol (FA) loaded Ni-MOF-74 as the precursor followed by NH 4 OH treatment and pyrolysis under N 2 atmosphere. For comparison purpose, Ni catalysts supported on porous carbon (denoted as Ni/C) were also prepared by direct pyrolysis of Ni-MOF-74. The selective gas phase catalytic hydrodechlorination of 1,2-dichloroethane to ethylene was carried out to evaluate the catalytic performances of the catalysts. It was found that for Ni catalysts prepared at the same pyrolysis temperature, Ni particle sizes in Ni/NC catalysts were significantly smaller (20–40% smaller) than that of Ni/C. This reflected that pre-modification of Ni-MOF-74 using FA and NH 4 OH could effectively increase Ni dispersion in Ni catalysts derived from Ni-MOF-74. Moreover, Ni/NC had a markedly stronger ability to form spillover H 2 owing to the enhanced metal-support interactions by N-doping. Accordingly, Ni/NC catalysts exhibited much higher catalytic activities than Ni/C catalysts. The turnover frequencies of Ni/NC catalysts were found to be 1.22–1.65 times higher than Ni/C catalysts. Increasing pyrolysis temperature led to decreased catalytic activities of both Ni/C and Ni/NC catalysts, due to the aggregation of Ni particles at higher treatment temperature. The findings from this study demonstrate that the MOF-mediated synthesis method offers a promising way to prepare Ni-based catalysts for catalytic hydrodechlorination of chlorinated hydrocarbons .
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2021
·
IF 6.165
Hua Qiang,Mingzhu Xia,Fengyun Wang,Wu Lei,Xin Lu,Yue Ni
Due to the lack of rapid and efficient detection methods for the determination of trace organic phosphonate concentrations in the natural aqueous system, little is known about their impact on the ecosystem. Amino trimethylene phosphonic acid (ATMP) is an organic phosphonate that has been widely used in many fields. In the present work, the copper-based organic framework material (Cu-MOF-74) for the specific detection of amino trimethylene phosphonic acid (ATMP) in aqueous solution was prepared by hydrothermal synthesis using 2,5-dihydroxyterephthalic acid (DHTP) as raw material and copper nitrate trihydrate as metal source. The synthesized material can be used as a “turn-on” fluorescent sensor for the specific sensing of ATMP, the fluorescence intensity of Cu-MOF-74 can be enhanced 24.2 times by ATMP (90 μΜ), the emission wavelength of the fluorescence emission spectrum of the system was blue-shifted, and the detection limit (LOD) of ATMP was 0.844 μΜ. Moreover, the mechanism of ATMP greatly increasing the fluorescence intensity of Cu-MOF-74 was investigated by experimental and theoretical calculations of quantum chemistry. The experimental results showed that ATMP was involved in the coordination of open metal sites in Cu-MOF-74. Multiwfn wavefunction analysis results demonstrated that the charge transfer from the benzene ring and hydroxyl groups of the ligand to the metal (LMCT) occurred during the electron excitation of Cu-MOF-74, but after adding ATMP, the coordination of ATMP with copper led to the interruption and reduction of the energy transfer and electron transfer from ligand DHTP to Cu 2+ , and the fluorescence intensity of Cu-MOF-74 was improved. The Cu-MOF-74 fluorescent probe exhibited excellent anti-interference ability, high selectivity, good fluorescence intensity stability in the short term, so it can be used as a reliable fluorescent probe for the highly specific detection of low concentration ATMP, the revealed microscopic mechanism of Cu-MOF-74 fluorescent probe to ATMP from the atomic level can provide a theoretical basis for the research of new fluorescence detectors.
研究领域:
分析化学
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环境科学
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材料科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Chang Niu,Gongao Jiao,Lanjuan Zhou,Dongzhi Zhang
Carbon capture utilization and storage for reducing anthropogenic CO 2 emissions involve capturing CO 2 from industrial sources and injecting it into geological sinks such as oil reservoirs and depleted gas fields. To ensure environmental and public safety during carbon sequestration implementation, efficient CO 2 monitoring technologies must be developed to detect potential leaks at sequestration sites. Traditional CO 2 sensors used for monitoring these sites typically feature high costs and require specialized personnel for maintenance. This paper innovatively employs an immersion method to construct a surface acoustic wave (SAW) CO 2 sensor based on a polyethyleneimine-coated magnesium metal-organic framework (PEI@Mg-MOF-74) nanocomposite film. The PEI@Mg-MOF-74 SAW sensor exhibits ultra-high sensitivity across a CO 2 concentration range of 500–6000 ppm, with rapid response and recovery times of 11 s/6 s. Additionally, the sensor demonstrates excellent repeatability, selectivity, and long-term stability. Simultaneously, a graphene oxide/ Carboxymethyl Cellulose surface acoustic wave (SAW) humidity sensor was developed to address humidity-related issues. It exhibits ultra-high sensitivity of 14.29 kHz/% RH across a relative humidity range of 11–97% RH, coupled with rapid response and recovery times of 4 s/5 s. The SAW-based CO 2 sensor incorporates humidity compensation through the CSA-AdamW-CapsNet algorithm, and a wireless testing system based on the microcontroller was developed to enable wireless CO 2 and relative humidity measurement. This research provides theoretical foundations and technical prototypes for developing next-generation passive wireless smart sensing systems, holding significant application value in fields such as carbon dioxide capture and sequestration.
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产品关联
DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2025
·Vol. 9
·期 1
·8
·
IF 21.8
Yu Xiaoyang,Yan Keling,Zhou Fei,Liu Guangjun,Tian Jiaxuan,Zhuang Changfu,Wang Ying,Tian Di
Based on the features of cellulose-based carbon materials, integrating metal–organic framework (MOF) and polymers in cellulose is in favor of the electrochemical performance for supercapacitor and hydrogen evolution reaction (HER). In this work, a three dimensional (3D) porous carbon material inserted by carbon nanotubes (CNT) and Co particles was designed by an electrospinning and calcination technology. During the calcination process, MOF-74 as both nanocatalysts and carbon sources was converted to CNT and Co particles, meanwhile, CA-PVDF fibrous membranes were pyrolyzed into the porous carbon, leading to the novel multilevel structures and specific C/Co component. The type (PAN, PVDF, PVP) and mass ratio (0:1, 1:2, 2:1, 1:0) of polymers were optimized to improve the electrochemical performance. As a result, due to the rich defects from CNT, the high specific areas caused by PVDF, as well as the specific activity of Co particles, the high specific capacitance of 169.50 F g −1 was obtained at 0.5 A g −1 for CAF(2:1)CT within -1.0–0 V. CAF(2:1)C showed acceptable HER catalytic activity. Additionally, an asymmetric solid-state supercapacitor (CAF(2:1)C//CAF(2:1)CT) was built and delivered a high energy density of 25.69 Wh kg −1 , a superb cycling life during 10000 cycles, as well as a necessary practicality in circuit. This work proposed a novel hybrid biomass based carbon material, which can provide a reference for the design of electrode materials and catalysts in other fields.
研究领域:
材料科学
·
储能
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电化学
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纳米材料
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可再生能源
·
催化
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）