JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2021
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IF 8.128
Zhiliang Jin,Haiming Gong,Hongying Li
The morphology modification and the construction of heterojunction of the photocatalyst are considered as the main means to significantly improve the performance of photocatalytic hydrogen evolution. In this study, Mn 0.2 Cd 0.8 S nanorods are successfully assembled on the surface of Ni-MOF-74 with flake morphology. Specifically, the Ni-S bond is constructed between Ni-MOF-74 and Mn 0.2 Cd 0.8 S, which provides a unique transfer channel for photo-induced carriers. Meanwhile, the electrons in the conduction band of Mn 0.2 Cd 0.8 S can be injected into the conduction band of Ni-MOF-74 quickly due to the potential energy difference between the two. This shows that the recombination of photogenerated carriers in Mn 0.2 Cd 0.8 S can be greatly inhibited. Fluorescence spectroscopy and electrochemical characterization reveal that the composite catalyst has the longest carrier lifetime, the fastest charge transfer rate and the lowest overpotential compared with the Mn 0.2 Cd 0.8 S and Ni-MOF-74. The optimal hydrogen production rate of the composite can reach 7.104 mmol g −1 h −1 , which is 6.96 times that of Mn 0.2 Cd 0.8 S. This work provides a novel strategy for the modification of MnCdS-based photocatalysts by metal–organic framework materials.
研究领域:
材料科学
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能源化学
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催化科学
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DOI
PubMed
高影响因子
Materials Science & Engineering C-Materials for Biological Applications
·
2021
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IF 7.328
Yongmei Ge,Kui Wang,Huili Li,Ye Tian,Yutong Wu,Zhaowei Lin,Yangyang Lin,Yansong Wang,Jiarong Zhang,Bin Tang
Bone pain is the primary problem for patients with osteoporosis. Ketoprofen is clinically used to treat osteoporotic pain, while long-term oral administration of ketoprofen can cause some side effects. In addition, osteoporosis is also accompanied by bone mass loss and inflammation. In this study, we designed a multifunctional drug (Ket@Mg-MOF-74) adopted Mg-MOF-74 to load ketoprofen to treat osteoporotic pain, bone loss and inflammation comprehensively. Mg-MOF-74 was prepared, and the physicochemical characterization proved that it had excellent physical and chemical stability. Ket@Mg-MOF-74 was synthesized by post-synthetic modification method and a high loading rate of ketoprofen was confirmed. Drug release and ion release experiments indicated Ket@Mg-MOF-74 had a good controlled release of ketoprofen and Mg in solution. Cell experiments in vitro proved the compound drug could significantly reduce the expression of pain-related genes of cyclooxygenase 2 (COX2), obviously up-regulated the expression of osteogenic cytokines and remarkably down-regulated the secretion of pro-inflammatory factors. Therefore, Ket@Mg-MOF-74 is believed a promising painkiller for osteoporotic bone pain, with the function of anti-inflammatory and promoting bone formation.
研究领域:
药理学
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材料科学
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骨生物学
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DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 6
·2845-2854
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IF 10.733
Tianshu Zhang,Jing Wang,Wentao Zhang,Chengyuan Yang,Liang Zhang,Wenxin Zhu,Jing Sun,Guoliang Li,Tao Li,Jianlong Wang
Highly efficient decontamination of naturally occurring As(III) from aqueous media remains a rigorous task for public health and ecosystem protection. As its increasingly acute toxicity and mobile characteristics than those of As(V), it is imperative to exploit a technique for the simultaneous removal and detoxication of As(III). Herein, a novel strategy involving outer and inner structural engineering of an amorphous FeMn-MOF-74 adsorbent was developed via a facile temperature-controlled crystallization method, which integrated the inner amorphous structure with low-coordinated active centers and the outer optimized metal atomic ratio with homogeneous adsorption/oxidation sites for generating the synergistic effects of As(III) removal. An appropriate Fe/Mn ratio (∼1.96) with optimized temperature (denoted as aFMM-120) endows the synergic effect of iron and high-valence manganese nodes in the framework with the highest experimental adsorption capacity of 161.6 mg g−1 among MOF-based arsenic adsorbents. Detailed characterizations through X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy demonstrated the redox behavior of Mn species and surface coordination of oxygen molecules in FeO clusters toward As(III). All these results imply that amorphous aFMM-120 is an effective adsorptive oxidation material for efficient arsenic-contaminated water remediation.
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
Journal of Environmental Chemical Engineering
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2026
·Vol. 14
·期 5
·123848
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IF 7.5
Zhudi He,Yumeng Guo,Wenrui Jin,Haiying Lu,Wei Zhang,Yan Wang
High-entropy Metal-Organic Frameworks (HE-MOFs) have garnered considerable attention in the fields of gas adsorption and catalysis owing to their prominent multimetal synergistic effects. However, their large-scale fabrication remains a formidable challenge. In this study, a hierarchically porous HE-MOF-74 material incorporating Al, Mg, Zn, Ni, and Co was successfully synthesized via a combined strategy of mechanochemical ball milling and solvothermal treatment. This approach features a solvent-free process and exhibits great potential for industrial scale-up. Structural characterizations confirm that the as-synthesized material possesses a typical MOF-74 crystal structure, homogeneous distribution of the five metal elements, and distinct hierarchical porosity, with a Brunauer-Emmett-Teller (BET) specific surface area of 565 m 2 ·g −1 . Gas adsorption measurements reveal that the material achieves a CO 2 uptake of 52.4 cm 3 ·g −1 at 298.15 K and an excellent CO 2 /N 2 selectivity with a maximum value of 107.35. Such superior performance is attributed to the synergistic effects of multiple metal components and the enhanced contribution of exposed open metal sites. This work provides a novel and feasible strategy for the controllable synthesis and scalable production of hierarchically porous HE-MOFs.
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高影响因子
POLYHEDRON
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2024
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IF 2.4
Meng Zhao,Yun Yang,Xue-Song Gu,Lanlan Sun
The separation and purification of light hydrocarbons are performed by energy-intensive distillation processes. Microporous metal–organic framework based absorbents acting as alternative technology gains focus. Open metals sites (OMSs) enriched MOF-74 show great potential in light hydrocarbons but its separation selectivity is low and difficult to regenerate. To address this issue, we introduced N -donor ligands into open sites of Co-MOF-74 by post modification. Structure was determined by powder X-ray diffraction, element analysis, infrared spectroscopy and thermogravimetric analyses. As-synthesized modified Co-MOF-74 display potential in C 2 H 4 /C 2 H 6 , C 3 H 6 /C 3 H 8 , C 3 H 8 /CH 4 and C 2 H 6 /CH 4 separation for N -donor ligands placeholder.
研究领域:
材料科学
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化学工程
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2021
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IF 7.312
Chun-Ping Li,Ya-Qi Wu,Fei-Yang Zhang,Li-Xin Gao,Da-Quan Zhang,Zhong-Xun An
Carbon materials with suitable pore size distribution, high specific surface area and good wettability are crucial for the capacitive deionization (CDI) electrode. Herein, the Mg-MOF-74 derived carbon (MMCK) is prepared by solvothermal synthesis, carbonization, and potassium hydroxide (KOH) activation method. The MMCK has super hydrophilicity and rich hierarchical porous structure composed of micropores, mesopores and macropores. The capacitive deionization of MMCK is investigated in NaCl aqueous solution. The MMCK has high oxygen doping amount, and has a high electrosorption capacity (16.82 mg·g −1 ) for 500 mg·L −1 NaCl. This indicates that MMCK is novel and potential material for capacitive deionization.
研究领域:
材料科学
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环境工程
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DOI
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2025
·Vol. 39
·期 11
·e70403
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IF 0
Yingxue Zhang,Qiang Wang,Jingwen Cao,Xinhao Zhang,Yongze Zhang,Yali Chen
Gas tracer technology plays a crucial role in enhancing oil recovery during oil and gas field development. However, the limited storage capacity and detection efficiency of current gas tracers hinder their broader application. In this study, Ni-MOF-74 was successfully synthesized through a solvothermal method and subsequently modified by grafting perfluoroalkyl chains. The results demonstrated that the crystal structure and morphology of the material remained stable following fluorination, while its thermal stability was significantly improved. Notably, the specific surface area decreased with the increasing length of the grafted perfluoroalkyl chains, accompanied by a reduction in surface free energy. Additionally, the number of Lewis acidic sites increased, while the number of Lewis basic sites decreased. Adsorption performance tests revealed that the modified Ni-MOF-74 exhibited high adsorption capacities for difluorochloromethane (R22) and tetrafluoroethane (R134a), with values of 2.623 mmol·g −1 and 2.385 mmol·g −1 , respectively. These capacities were significantly higher than those of conventional activated carbon adsorption tubes. This study offers a novel approach to efficient gas tracer storage/detection and provides theoretical insights into the potential application of metal–organic frameworks (MOFs) in oil and gas field development.
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DOI
CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Hang-bo Zheng,Yuan-li Wang,Pei Zhang,Feng Ma,Peng-zhao Gao,Wen-ming Guo,Hang Qin,Xiao-pan Liu,Han-ning Xiao
The slow kinetics of Oxygen evolution reaction (OER) restricts the large-scale application of water electrolysis technology . It is reported that magnetic field can improve OER activity, but it is not clear how the AC magnetic field affects OER. Here, a series of NiCoFe-MOF-74 are reported, and it is found AC magnetic field can significantly enhance the alkaline OER activity at low current densities, but reduce the alkaline OER activity at high current densities, due to spin conservation, MHD effect, and induced electric field induced by AC magnetic field. In particular, when an AC magnetic field of 5.184 mT is applied, the overpotential at 10 mA cm −2 of NiCoFe-MOF-74 and carbon paper was reduced by 36.7% and 17.6%, respectively, but the overpotential at 40 mA cm −2 increased by 27.8% and 39.9%, respectively. This discovery provides a promising strategy for introducing an AC magnetic field to adjust the process of electrocatalytic reactions.
研究领域:
电化学
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材料科学
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催化反应
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DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2024
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IF 5.3
Xiaoyan Pei,Wangyue Song,Yunlei Shi,Yang Zhao,Zhiyong Li
Pickering emulsions with a stimulus response have been paid extensive concern due to their long-term stability and demulsification on-command. Metal-organic frameworks (MOFs) are expectable emulsifying agents to build Pickering emulsions based on their excellent properties such as high specific surface area, adjustable porosity and pore size. Herein, a novel kind of CO 2 -triggered Pickering emulsions formed by (3-aminopropyl)triethoxysilane (APTES)-functionalized M-MOF-74 (M-MOF-74-APTES, M = Zn, Cu or Mg) has been developed for the first time. It was found that even at the M-MOF-74-APTES amount of 0.5 wt%, the functionalized MOFs could still stabilize the n-hexane-water mixture to construct Pickering emulsions. The as-generated Pickering emulsions could be efficiently demulsified upon bubbling of CO 2 , resulting in complete separation of oil and water phases, but could be restored by subsequent N 2 bubbling under homogenization. Mechanism study indicated that the acid-base reaction of CO 2 with the amino group of M-MOF-74-APTES resulted in the creation of hydrophilic salts, which led to the lowering of particle wettability and broke the stability of the emulsion, causing demulsification of the Pickering emulsion. After removing CO 2 , the emulsion can be reconstructed by the reversible reaction. As an applied example, the Pickering emulsion has been availed as a micro-reaction system and M-MOF-74-APTES as a carrier of Pd(OAc) 2 catalyst to realize the efficient combination of Suzuki-Miyaura reaction, product isolation and reuse of catalysts via alternate bubbling or removing of CO 2 .
研究领域:
化学工程
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材料科学
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DOI
高影响因子
AICHE JOURNAL
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2020
·Vol. 66
·期 11
·e16645
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IF 3.519
Meng-Meng Jin,Yu-Xia Li,Chen Gu,Xiao-Qin Liu,Lin-Bing Sun
Due to the excellent adsorption capacity on CO 2 , Mg-MOF-74 is highly potential for carbon capture. However, the practical application is seriously hindered by the poor hydrolytic stability of Mg-MOF-74 even towards trace of moisture. Here we report a strategy by adjusting the microenvironment of Mg-MOF-74 from hydrophilic to superhydrophobic by coating polydimethylsiloxane (PDS, yielding M74@P), which markedly enhances the hydrolytic stability. Mg-MOF-74 is degraded obviously upon exposure to humid atmosphere (75% relative humidity) for 7 days, while M74@P retains its structure well even after 1 year. The dynamic breakthrough results show that the optimized M74@P sample can capture 6.65 mmol g −1 CO 2 from wet CO 2 /N 2 mixtures after 100 cycles, which is superior to Mg-MOF-74 (1.17 mmol g − 1 ) and most reported adsorbents under comparable conditions (continuous flow adsorption from wet gases). The excellent adsorption capacity and hydrolytic stability make the present adsorbents highly promising for practical applications in carbon capture.
研究领域:
化学工程
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材料科学
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环境科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Lin-Yuan Xiao,Chao-Yue Zhuo,Xiao-Nan Qin,Yue-Fei Zhang,Ziyi Li,Xiao Luo,Xiangjun Luo,Zhiwu Liang
Aminosilane concentration tunes Mg-MOF-74 structural evolution and porosity. • CO 2 adsorption exhibits high uptake at both ambient and high pressures. • The mechanism of how defects and amine groups synergistically enhance CO 2 capture capacity was studied. In this study, we report a rational design and synthesis of hierarchically porous 5/PA2-Mg-MOF-74@APTES with high CO 2 capacity through propionic acid (PA) modulation and amine functionalization (APTES). Characterization results confirmed that an optimized PA concentration effectively induced mesopore formation and exposed more unsaturated Mg 2+ sites, thereby generating hierarchical porosity, while subsequent grafting of APTES successfully introduced amino functional groups This combined strategy leverages both defect engineering and chemical functionalization, synergistically promoting CO 2 adsorption. Performance evaluations revealed that the optimal adsorbent 5/PA2-Mg-MOF-74@APTES(1:1), achieved a CO 2 uptake of 4.91 mmol·g −1 at atmospheric pressure (1 bar) and a remarkable uptake of 17.38 mmol·g −1 at high pressure (15 bar) with significantly improved CO 2 /CH 4 selectivity. This work explores a synergistic enhancement mechanism of CO 2 adsorption from the interplay of defect engineering and amine functionalization conducted by experimental characterization and theoretical calculations, which provides a novel strategy for the design and fabrication of high-efficiency CO 2 adsorbents suitable for diverse pressure applications.
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高影响因子
ELECTROCHIMICA ACTA
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2026
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IF 5.8
Yangchen Wang,Ran Fang,Simeng Qi,Guanghui Li,Yi Sun,Ziyi Li,Lizi Yang
Sulfur incorporation modulates the electronic structure of NiFe-MOF-74. • Enhanced OER kinetics with low overpotential and small Tafel slope. • Operando EIS and ATR-FTIR reveal facilitated intermediate evolution. • DFT reveals optimized adsorption energetics via d-band modulation. • Electronic inheritance effect persists after electrochemical reconstruction. Regulating the local chemical environment of transition metal-based electrocatalysts is important for improving oxygen evolution reaction (OER) kinetics, but the relationship among heteroatom modification, electrochemical reconstruction, and the resulting active phase remains difficult to establish unambiguously. Herein, a sulfur-modified low-crystalline NiFe MOF-74 precursor is developed to examine how sulfur-containing species influence the precursor coordination environment and subsequent OER behavior. Structural characterizations support the introduction of sulfur-containing species into the MOF-74-related precursor, accompanied by reduced crystallinity and a lower surface area. The optimized catalyst exhibits enhanced OER activity, delivering an overpotential of 257 mV at 10 mA cm⁻² with a Tafel slope of 63.4 mV dec⁻¹. Operando electrochemical impedance spectroscopy, methanol oxidation reaction probing, and operando ATR-FTIR measurements indicate that sulfur modification affects the electrochemical evolution process from precursor activation to oxygen-containing intermediate conversion. Post-OER XRD, XPS, and TEM mapping support reconstruction into a NiFe (oxy)hydroxide-like phase in which sulfur-containing species remain detectable after reconstruction. Density functional theory calculations based on representative reconstructed NiFeOOH/S-NiFeOOH models suggest that sulfur-associated local perturbation may induce electronic redistribution and reduce the maximum uphill free-energy change of the potential-determining step. These results are consistent with a possible sulfur-assisted evolution process in which sulfur-containing species modify the precursor and remain detectable after electrochemical reconstruction, while their exact role in the reconstructed active phase remains unresolved. Download: Download high-res image (292KB) Download: Download full-size image
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高影响因子
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