ACS Applied Polymer Materials
·
2024
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IF 4.4
Yadi Zhang,Haikuan Yuan,Xinyi Chen,Zhenlin Jiang,Jie Lu,Fan Xin
MXene has a multilayer structure, which can be peeled and layered into single or multilayer nanosheets, and it possesses multiple functional groups that can be easily modified. MOF-303, a kind of metal–organic framework material, was synthesized by the solvent hydrothermal method using aluminum ion as the center metal and 3,5-pyrazole dicarboxylic acid as the organic ligand. In this paper, MOF-303 was grown in situ on Ti3C2Tx MXene to synthesize the MXene@MOF-303 composite, which combined the advantages of both MXene and MOF-303. Using the MXene@MOF-303 composite as blending fillers and a polyacrylonitrile (PAN) ultrafiltration (UF) membrane as the substrate, an MXene@MOF-303/poly(vinyl alcohol) (PVA)/PAN composite membrane was fabricated. The composites and membranes were characterized by FTIR, XRD, SEM, and the pervaporation desalination of the composite membrane was also tested. The experimental results showed that the incorporation of MXene@MOF-303 composites improved the separation performance of the PVA membrane. The MXene@MOF-303/PVA/PAN composite membrane, loaded with 0.5 wt % of MXene@MOF-303, achieved a high flux of 15.87 kg·m–2·h–1 and a rejection of 99.84% when desalinating 3.5 wt % NaCl solution at 35 °C by pervaporation.
研究领域:
材料科学
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环境工程
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化学工程
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 12
·5311-5325
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IF 2.7
Pengna Huang,Xianjin Qi,Xiaoxu Duan,Wenqi Jiang,Nina Yang,Gang Zhi,Jianhua Wang
The low adsorption capacity of metal–organic frameworks (MOFs) limits their practical application in high-arsenic wastewater for adsorption owing to their insufficient active sites and suboptimal pore structure. Accordingly, we employed a one-pot hydrothermal method to synthesise mixed-metal La/Zr-MOFs with complex pore structures. Notably, the material possesses both La-BDC and Zr-BDC morphology features and integrates the advantages of monometallic MOFs through a framework symbiotic structure. This complex pore structure promotes the migration and diffusion of arsenic ions in the pore channels, improving the adsorption kinetics. Moreover, mixed-metal functional centres can expose more active sites, which is conducive to enhancing adsorption capacity. Experiments showed that mixed-metal La/Zr-BDC-4 rapidly reached adsorption equilibrium in 60 min, corresponding to a maximum adsorption amount of 694 mg g−1. Batch adsorption experiments and X-ray photoelectron and Fourier-transform infrared spectroscopy analyses revealed that mixed-metal La/Zr-BDC-4 arsenates tend to form internal complexes with each other, suggesting that As(V) adsorption is an exothermic and spontaneous chemisorption process. After four adsorption–desorption cycles, the material maintained an arsenic removal rate of 85%, exhibiting its potential application in wastewater treatment. Therefore, the mixed-metal La/Zr-BDC-4 MOF is a promising material for wastewater treatment.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2020
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IF 10.652
Jiarong Li,Zhi Yang,Guangfa Hu,Jianshe Zhao
Three methods are tried to synthesize a novel type of inorganic-organic hybrid catalyst (HPA@MOF@CA) for oxidative desulfurization by the composition of phosphomolybdenum tungsten heteropolyacid (H 3 PMo 6 W 6 O 40 ·nH 2 O abbreviated as HPA), MOF-199 and cellulose acetate (CA). The structure features of the catalyst are characterized through XRD, IR, XPS, N 2 adsorption-desorption and SEM analysis. The impregnation method was proved to be the best synthesis methods and considered to be a possibility for catalyst forming in industrial application. The best loading of heteropolyacid and optimal conditions for desulfurization were also investigated in this paper while the removal efficiency reached 99.23% with O 2 as oxidant at 313 K after 3 h. After the reaction, the catalyst can be simply recovered and reused 10 times with negligible decrease in the desulfurization rate. It is believed that the HPA@MOF@CA, as a novel catalyst, has a high catalytic activity for thiophen and has the potential to be used in industry.
研究领域:
化学工程
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催化材料科学
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
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IF 8.4
Jinyuan Hu,Boru Cai,Yaohui Wang,Zhengran Bian,Tianle Hou,Yanwei Sun
Amorphous metal–organic frameworks (MOFs) present significant potential for achieving high permeability and selectivity in separation applications. However, developing effective fabrication strategies for amorphous MOF membranes with well-defined channels remains a considerable challenge. In this study, amorphous titanium-based MOF membranes with concurrently optimized intercrystalline and intracrystalline selective transport channels were successfully prepared. The resulting membranes exhibited exceptional sieving performance for dyes with molecular weight cutoff of 600 Da. Additionally, defect-rich dual water channels within and between the amorphous MOF aggregates led to a remarkable water permeances up to 107.4 L m −2 h −1 bar −1 , significantly surpassing the benchmarks set by other nanofiltration membranes. This work offers valuable insights into the influence of amorphization on the design of a wide variety of MOF membranes, paving the way for advanced separation applications.
研究领域:
材料科学
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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
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 15
·2579
·
IF 5.719
Beiying Qi,Xinchang Wang,Xinyue Wang,Jipeng Cheng,Yuanyuan Shang
Metal–organic framework (MOF)-derived pure ZnO and Cu-doped ZnO nanocages were fabricated by calcining a zeolitic imidazole framework (ZIF-8) and Cu-doped ZIF-8. The morphology and crystal structure of the samples were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), and high-resolution transmission electron microscopy (HRTEM). It was found that Cu doping did not change the crystal structures and morphologies of MOF-derived ZnO nanocages. The H2S-sensing properties of the sensors based on ZnO and Cu-doped ZnO nanocages were investigated. The results indicated that the H2S-sensing properties of MOF-derived ZnO nanocages were effectively improved by Cu doping, and the optimal doping content was 3 at%. Moreover, 3 at% Cu-doped ZnO nanocages showed the highest response of 4733 for 5 ppm H2S at 200 °C, and the detection limit could be as low as 20 ppb. The gas-sensing mechanism was also discussed.Keywords:MOF-derived ZnO;nanocages;Cu doping;H2S sensing
研究领域:
材料科学
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传感器技术
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Jingwei Huang,Wei Luo,Xiaoli Yuan,Jing Wang
In this work, bimetallic NiCo-MOF was fabricated on BiVO 4 by method of electrostatic attraction and then calcined to prepare Ni x Co 1−x O/BiVO 4 composite photoanode. The obtained Ni x Co 1−x O with high porosity and surface area showed excellent oxygen evolution performance. It is found that Ni x Co 1−x O acting as a strong hole extraction increases the rate of surface water oxidation by promoting charge separation efficiency. As a result, this composite photoanode can provide a photocurrent of 3.2 mA/cm 2 at 1.23 V vs RHE (0.5 M Na 2 SO 4 , AM 1.5 G illumination), far larger than that of pure BiVO 4 photoanode. The enhanced performance can be ascribed to synergistic effect between Ni and Co, which plays an important role for boosting water oxidation.
研究领域:
材料科学
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能源转换
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DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 33
·11204-11212
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IF 6.4
Zhimin Mao,Su-Yun Zhang,Duo Zhao,Xiaoliang Weng,Chenxu Kang,Hui Fang,Yu-Jia Zeng
The development of metal–organic framework (MOF) materials with multifunctionalities has boosted their prospects in the fields of spintronics and optoelectronics. However, incorporating magnetic and optoelectronic properties in MOF materials remains challenging. Herein, the in situ synthesis of Cu-MOF-74, a typical one-dimensional linear magnet, is systematically investigated, which shows ferromagnetic and antiferromagnetic interactions along the axial chain direction, and overall tilted antiferromagnetism at low temperatures. In particular, the introduction of SnS:Co quantum dots (QDs) enhances the antiferromagnetic coupling, which increases the phase transition temperature of the MOF from 7.8 K to 275 K at 1000 Oe. In addition, it is demonstrated that Cu-MOF-74 possesses both magnetic and optoelectronic properties. It is found that the responsivity and detectivity of the Cu-MOF-74 photodetector are both significantly improved by the SnS:Co QDs. This research provides promising methods for concurrent improvement of the magnetic and optoelectronic properties of MOF materials, advancing in-depth research on the MOF film as a new type of semiconductor for spintronic and optoelectronic devices.
研究领域:
材料科学
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自旋电子学
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光学
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DOI
高影响因子
MOLECULES
·
2023
·Vol. 28
·期 23
·7894
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IF 4.6
Jia-Bin Xiong,Yong-Juan Zhou,Shi-Hui Wang,Zhang-Qi Xiong,Zi-Kun Zhang,Shan-Shan Zhang,Chen-Kunlun Zhang,Chao-Fan Xu,Guo-Qun Liu
MOF (metal organic framework) materials have been used as functional materials in a number of fields due to their diverse spatial tunability, which produces rich porous structures with stable and continuous pores and a high specific surface area. A triboelectric nanogenerator can convert trace mechanical energy into electrical energy, and the application of MOF materials to triboelectric nanogenerators has been intensively studied. In this work, we report on two MOFs with similar spatial structures, and the modulation of the end microstructures was achieved using the difference in F content. The output performance of friction power generation increases with the increase in F content, and the obtained polyacidic ligand materials can be used to construct self-powered corrosion protection systems, which can effectively protect metallic materials from corrosion.Keywords:TENG;MOF;corrosion protection;cathodic protection
研究领域:
材料科学
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能量转换
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腐蚀工程
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DOI
PubMed
高影响因子
Current Analytical Chemistry
·
2025
·Vol. 21
·期 1
·57-67
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IF 1.7
Mengfei Yang,Jing Shi,Taiming Luo,Xiaozhan Yang
Aims By using terephthalic acid, 2, 5-furandicarboxylic acid, and terbium nitrate hexahydrate, a Tb-MOF with a core-shell structure was successfully designed and prepared. Methods A one-pot method was employed to design and synthesize core-shell Tb-MOF. The morphology, luminescence performance, and stability were well characterized. Results Tb-MOF demonstrated good water stability, acid and alkali resistance, and thermal stability. Tb-MOF was found to have high sensitivity to detect Cr3+, Bi3+, and acetone in an aqueous solution, and the LOD of Cr3+, Bi3+, and acetone were calculated to be 0.18 μM, 4.22 μM, and 0.26%, respectively. The sensing mechanism of Cr3+ and acetone was explained as energy-competitive absorption, and the sensing mechanism of Bi3+ was explained as ion replacement. Conclusion The prepared Tb-MOF can be developed as a multifunctional light-emitting sensor with high selectivity.
研究领域:
材料科学
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分析化学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Hao Guo,Hao Zhang,Ning Wu,Zhilan Pan,Cuiliu Li,Yuan Chen,Yujuan Cao,Wu Yang
In this article, a trimesic acid-mediating control synthesis strategy was proposed for preparing the NiCo-MOF composition structure of microsphere and nanosheet by substituting 1,4-dicarboxybenzene with trimesic acid. Then the pre-synthesized MOF , as a precursor and template, was further vulcanized by a facile hydrothermal method to obtain hollow microsphere and nanosheet interleaved nickel and cobalt bimetallic sulfide materials (NiCo-S) while these microspheres and nanosheets were composed of smaller nanoparticles . This unique structure endowed quick electron/ion transport and electrolyte penetration as well as abundant redox active sites, significantly facilitating electrochemical performance. The obtained NiCo-S-2 showed higher specific capacitance (1790.4 F g −1 ) than its precursor NiCo-MOF-2 and other molar ratios of counterparts. Using it as an positive electrode and activated carbon (AC) as negative electrode, the assembled asymmetric supercapacitor NiCo-S-2//AC also delivered a high specific capacitance of 114.4 F g −1 and big specific energy of 35.5 Wh kg −1 at 799.99 W kg −1 .
研究领域:
材料科学
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电化学
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
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IF 5.1
Zhen Song,Huina Zhou,Zhenzhen Liu,Mengying Xia,Qianqian Lv,Yi Yuan,Minghua Lu
Advanced fiber coating materials are pivotal for achieving good performance in solid-phase microextraction (SPME). To enhance the adsorption capacity of metal-organic framework (MOF)-derived carbon materials, we developed a novel two-dimensional/three-dimensional (2D/3D) MOF co-growth strategy. This approach synthesizes a core-shell structured 2D ZIF-L@ZIF-67 hybrid framework through controlled crystallization of 3D ZIF-67 (Co) on 2D ZIF-L (Zn) substrates. Subsequent pyrolysis converts this material into nitrogen-doped carbon-graphite carbon/carbon nanotube heterostructures (NC@GC/CNTs) with hierarchical porosity. The NC@GC/CNTs were utilized as fiber coating material of SPME to enrich trace polychlorinated biphenyls (PCBs) in jasmine tea, barrel drinking water, and green tea beverages. The adsorption performance of the fiber toward PCBs were significantly improved, which can be attributed to cation-π interaction, π-π interaction, and strong hydrophobic effect between fiber coating and analytes. Using NC@GC/CNTs as fiber coating material, a headspace SPME (HS-SPME) coupling with gas chromatography-flame ionization detector (GC-FID) was developed to quantitative analysis of PCBs. Under the optimal conditions, the HS-SPME-GC-FID method exhibited a wide linear range (0.005–30 ng·mL −1 ) with a good linear correlation coefficient (R 2 ≥ 0.9947), low limits of detection (0.001–0.003 ng·mL −1 ), and high enrichment factors (11077–14,447). The recoveries of method to PCBs were obtained in the range of 83.2–119.6 % in real samples.
研究领域:
分析化学
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材料科学
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环境科学
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纳米技术
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DOI
高影响因子
AICHE JOURNAL
·
2021
·Vol. 68
·期 3
·e17528
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IF 3.993
Meng Zhao,Yujie Ban,Ze Chang,Yingwu Zhou,Kun Yang,Yuecheng Wang,Na Cao,Weishen Yang
A series of pyrazine-interior-embodied metal–organic framework-74 composites (py-MOF-74) were successfully synthesized by a post-synthetic vapor modification method. Here, pyrazine molecules occupy the cavity to block the wide pores of MOF-74, which accentuates the difference in adsorption of a pair of gases on MOFs and consequently reinforces the adsorption selectivity. Different from the “physical confinement” of occupants, the pyrazine molecule with dual “para-nitrogen” atoms donates one N atom to bond with the open metal ion of MOF-74 for stability and the other N atom for potential CO 2 trapping. Typically, py-MOF-74c with the highest pyrazine insertion ratio displays selectivity greatly superior to that of MOF-74 in equimolar CO 2 /CH 4 (598 vs. 35) and in simulated CO 2 /N 2 flue gas (471 vs. 49). Py-MOF-74 entities are long-lived adsorbents, and their CO 2 capacity can be maintained even after storage for 1 year in air. Py-MOF-74 also showed a sharp molecular sieve property in fixed-bed cycle adsorption tests, which implies its great potential in real applications.
研究领域:
材料科学
·
环境科学
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DOI
高影响因子
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