SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Xiaoyu Wang,Hanlin Shao,Zhihao Chen,Xiaoshuang Yin,Yun Chen,Ying Liu,Wenzhong Yang
Herein, we presented a facile method for enhanced boron removal based on PEI-grafted defective MOF-808 (D-MOF-808/PEI). The rich Zr OH bonds, amino-functionalized surface, and exposed metal defects of D-MOF-808/PEI endow it with the high adsorption capacity of boron. Due to the ligand exchange at metal defects and boron-imine/amine groups complexation, D-MOF-808/PEI exhibits exceptional selectivity for boron with the saturation adsorption of 95.30 mmol·g −1 at 45 °C. Additionally, negligible interference from other coexistent ions and excellent reusability promote the application of D-MOF-808/PEI practically for the rapid and high selectivity removal of boron from complex environmental samples. This work furnishes a promising strategy for boron contamination and expands the application potential of defective MOF-based adsorbents for environmental remediation.
研究领域:
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
ACS Applied Nano Materials
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2023
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IF 5.9
Zhen-Zhen Zhao,Tao Wang,Xi Zheng,Yongsheng Ren,Zhi-Ping Zhao
Metal–organic frameworks (MOFs) have attracted tremendous interest in preparing a thin-film nanocomposite (TFN) membrane. Especially, the membrane performance could be optimized by using MOFs as modifying agents, which takes advantage of their adjustable and regular pore structure, good compatibility with polymers, and superb functional designability. In this study, a tailored TFN polyamide membrane for nanofiltration was successfully fabricated via interfacial polymerization by incorporating MOF-808 into the selective layer on top of a poly(m-phenylene isophthalamide) (PMIA) substrate. An MOF-808 nanoparticle with a size of approximately 60 nm and a high specific surface area of 1666 m2·g–1 was synthesized using a two-step green method and embedded into the polyamide layer. The surface morphology of the resultant TFN membrane evolved from the nodular structure to a particle aggregation configuration with increased roughness and enhanced hydrophilicity when adding more MOF-808. In particular, the membrane prepared with 0.02 wt % MOF-808 exhibited exceptional water permeance with 17.63 LMH·bar–1 with a well-maintained Na2SO4 rejection of 97.67%, which is superior to commercial membranes and most TFN membranes reported in the literature. The molecular dynamics simulation results showed that the introduction of the MOF-808 filler can significantly enhance the mass transfer of water in the TFN membrane. In addition, the newly designed TFN membrane possessed excellent ion separation performance and superior long-time stability. The findings in this study demonstrate a strategy to regulate the membrane structure, which will provide an impetus for the MOF-based TFN membrane in water treatment and desalination applications.
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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产品关联
DOI
高影响因子
MATERIALS LETTERS
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2015
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IF 2.489
Zong-Qun Li,Ji-Chao Yang,Ke-Wen Sui,Na Yin
Metal-organic framework Zr 6 O 4 (OH) 4 (BTC) 2 (HCOO) 6 (MOF-808) nanoparticles were successfully synthesized with a household microwave oven in less than 5 min of irradiation time. The obtained MOF-808 nanoparticles exhibited high superacidity, making them excellent adsorbent for arsenic removal. The adsorption capacity of the as-synthesized MOF-808 nanoparticles for arsenic was 24.83 mg/g. Furthermore, the adsorbents still maintained 82.10% of the removal efficiency after five cycles, indicating that the MOF-808 nanoparticles can serve as a regenerable As(V) adsorbent.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2025
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IF 3.9
Han Dong,Pu Zhou,Fan Yang,Enhao Zhang,Yifan Liu,Yefei Tian,Hongye Yuan
The development of metal–organic framework (MOF)-based adsorbents with high uptake capacity and mild regeneration conditions represents a promising avenue for addressing environment-based issues. In this study, we present the successful synthesis of temperature-responsive composite aerogels comprising MOF-808 and poly(N-isopropylacrylamide) (PNIPAM), which forms interpenetrated networks with acrylamide (AM). The resulting thermally responsive PNIPAM/MOF-808 composite aerogels achieved an impressive maximum water capture exceeding 2267 wt % at room temperature, with reversible release observed above 32 °C due to the hydrophilicity–hydrophobicity transition of PNIPAM. Interestingly, the aerogels also exhibit an iodine (I2) capacity of 234 wt % based on the charge transfer mechanism. This study provides a novel strategy for the preparation of efficient and reusable porous adsorbent materials, and it also demonstrates broad application prospects in areas such as water resource management and waste reduction.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
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2023
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IF 5.9
Fan Liu,Wenbo Li,Junjie Yang,Dongxiao Ji,Yuan Liang,Hengtao Liang,Xiang Li,Pengju Han,Zupei Yuan,Jianxin He,Weili Shao
Highly efficient and reusable protective materials for chemical warfare agents (CWAs) are in high demand. Here, we used a surface modification technique to develop a material that provides chemical protection. Using an electrospun polyacrylonitrile (PAN) nanofiber membrane as the substrate, we modified the surface of the nanofiber with dopamine hydrochloride, which self-polymerized to form a polydopamine (PDA) surface layer, onto which we loaded metal–organic framework (MOF-808) particles. The presence of PDA on the surface of the PAN nanofibers significantly increased the breaking strength (2-fold increase) and elongation (9-fold increase) of the nanofiber membrane. Moreover, the PDA functionalities formed coordination sites to trigger the in situ growth of MOF-808 particles on the surface of the nanofiber membrane, thereby considerably increasing the growth rate and loading capacity. The surface of the nanofiber membrane was completely covered with MOF-808 particles following solvothermal treatment for 16 h. The MOF-808/PAN/PDA composite membrane could rapidly degrade 99.9% of dimethyl-4-nitrophenyl phosphate to p-nitrophenol within 8 min. After the membrane was used several times, the conversion rate stabilized at 95.9%, indicating that the MOF-808/PAN/PDA composite membrane has significant potential for application as protective clothing for CWAs.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL RESEARCH
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2022
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IF 1.097
Shaoxiong Wu,Lianyuan Wang,Haiyan Zhu,Jing Liang,Liang Ge,Cong Li,Ting Miao,Jian Li,Zhenxing Cheng
Chemical warfare agents, such as nerve agents (GD and VX) and blister agents (HD), have strong toxicities to mankind. In recent years, zirconium-based metal-organic frameworks have been found to be attractive materials for chemical warfare agent degradation. Among them, metal-organic framework-808 (MOF-808) and porous coordination network-222 (PCN-222) were the best. However, few papers pay attention to their practical application. In this work, we prepared MOF-808 and PCN-222 using water phase and organic solvothermal methods, respectively. Their performance for the catalytic degradation of chemical warfare agents under practical decontamination conditions was studied. The results showed that MOF-808 displayed a high potency for catalytic hydrolysis of VX (10,000 mg L−1) in unbuffered solution. PCN-222 exhibited weaker reactivity with a half-life (t1/2) of 28.8 min. Their different performances might stem from the different connectivity of the Zr6 nodes and framework structures. The results illustrated that the hydrolysis of high-concentration GD required a strong alkaline buffer to neutralize the hydrolysis product of hydrofluoric acid (HF) to avoid catalyst poisoning. When H2O2 was used as the oxidant instead of O2, both zirconium-based metal-organic frameworks performed with effective catalytic potency for HD degradation without any special lighting and so was suitable for practical application, whereas the products obtained from HD, such as HDO2 and V-HDO2, still possessed vesicant toxicity. Overall, MOF-808 prepared via a water-phase synthesis performed with effective catalysis for the degradation of high-concentration VX, GD, and HD with t1/2 of < 0.5, 3.1 and 2.2 min, respectively, exhibiting its potential for practical applications.
研究领域:
材料科学
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环境科学
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化学
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产品关联
DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2025
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IF 4.7
Songshan Jiang,Lin Xu,Fan Wu,Rui Wen,Meiling Yang,Bai He,Wei Xiong,Huan Yi
The development of stable and efficient MOF-based photocatalysts is essential for the treatment of high-strength dye wastewater. In this study, Ag/Ag 2 O@MOF-808 surface heterojunction photocatalysts were synthesized by a low-temperature impregnation calcination method. Comprehensive structural analyses (XRD, FT-IR, SEM, TEM, BET, H 2 -TPR, XPS) confirmed successful silver loading without damaging the MOF-808 framework. By adjusting the calcination temperature, both Ag 0 and Ag 2 O were introduced to form surface heterojunctions with MOF-808. UV–vis DRS and valence band XPS showed that Ag 2 O reduced the band gap and valence band position, improving light absorption and charge separation. The optimized catalyst (10 wt% Ag, 150 °C) achieved 98.1 % degradation of Rhodamine B (25 mg/L) under UV light within 60 min and maintained 88.8 % efficiency (within 180 min) at 100 mg/L. The catalyst exhibited excellent reusability with 0.417 % Ag + leaching and over 73 % activity retention after four cycles. Radical scavenging experiments identified superoxide radicals as the dominant reactive species. The enhanced performance is attributed to the synergistic effect of Ag 2 O as the active phase, Ag 0 as a conductive bridge, and MOF-808 as a stable support. This work offers a controllable, oxidant-free strategy for efficient photocatalytic degradation of hazardous dyes in wastewater.
研究领域:
材料科学
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环境化学
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光催化
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废水处理
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金属有机框架材料（MOFs）
✓ 已验证
产品关联
DOI
高影响因子
Gas Science and Engineering
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2024
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IF 0
Xuebi Du,Dawei Shao,Yinhua Wan
Metal-organic frameworks (MOFs) have shown potential as nanofillers for the selective capture of specific gases in mixed matrix membranes (MMMs). This study introduces an efficient method, utilizing a mild (100 °C) reaction condition and a short reaction time (20 min), for the synthesis of MOF-808(Ce) nanocrystals. The MOF-808(Ce) that is obtained exhibits porous characteristics, a notable affinity for CO 2 , and robust intermolecular interactions with PIM-1. Furthermore, this study pioneers the incorporation of MOF-808(Ce) as a filler into PIM-1, with varying loadings, to create PIM/MOF-808 MMMs for the purpose of CO 2 separation. Consequently, the MMMs containing 2 wt% MOF-808(Ce) demonstrate high CO 2 permeability of 6854 Barrer and CO 2 /N 2 selectivity of 23.2, which is far surpasses 2008 upper bound from Robeson and approaches the refined 2019 upper bound from MeKenow. A comparative analysis demonstrates the efficacy of MOF-808(Ce) as a filler in PIM-1 for the purpose of CO 2 separation.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
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2024
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IF 2.2
Mohan Chen,Yichao Wang,Ziwen Fan,Yue Wang,Zheng Niu,Jianping Lang
Graphical We prepared a series of fluorinated MOFs through the post- synthesis modification of the classic Zr-based MOF-808. The fluorinated alkane pores within MOFs can enhance the forces between the framework and C 2 H 2 , therefore, the difference in the adsorption capacity to C 2 H 2 and C 2 H 4 making it possible to effectively separate the C 2 H 2 /C 2 H 4 mixture at room temperature. The separation of ethylene (C 2 H 4 ) and acetylene (C 2 H 2 ) is challenging due to their similar molecular dimensions and boiling points, making conventional methods like cryogenic distillation and solvent extraction inefficient and environmentally harmful. Fluorinated metal-organic frameworks (MOFs) have been proven to be an effective material for the separation of C 2 H 4 and C 2 H 2. However, their direct synthesis is relatively expensive and challenging. In this study, we report a facile post-synthetic modification strategy to introduce fluorinated alkane pores into a zirconium-based MOF, MOF-808. The construction of fluorine-containing pores within the MOFs prefers adsorption for C 2 H 2 attributed to the interaction between the fluorine atoms and C 2 H 2 . This series of fluorinated MOFs demonstrates potential for gas separation processes, with the highest separation ratio reaching 2.67 (1 : 99) at 298 K. Breakthrough experiments for C 2 H 2 /C 2 H 4 mixtures confirmed that fluorinated MOF is capable of separating C 2 H 2 /C 2 H 4 , making it a potential candidate for industrial application. Moreover, the simplicity of the post-synthetic modification method suggests a viable strategy for the synthesis of fluorinated MOFs.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Ruipeng Chen,Xuexia Jia,Xingpeng Huang,Zefeng Mao,Hong Zhang,Huanying Zhou,Shuyue Ren,Zhixian Gao
Arsenic contamination in water poses significant health risks, necessitating effective detection methods to ensure public safety. In this study, a novel FeS x @MOF-808/Ti 3 C 2 T x composite sensor was introduced for the electrochemical detection of arsenite (As(III)), a highly toxic form of arsenic. Based on a straightforward synthetic approach, the composite enhances the sensitivity and selectivity for As(III) detection. The electrochemical performance in various buffer solutions was characterized through square wave anodic stripping voltammetry. The sensor demonstrated exceptional sensitivity with a detection limit of 0.02 ng/mL and a broad linear response range of 0.05–100 ng/mL, surpassing World Health Organization guidelines. Notably, the FeS x @MOF-808/Ti 3 C 2 T x composite exhibited minimal interference from common heavy metals. The superior adsorption properties, attributed to the high surface area and porosity of the composite, facilitated rapid arsenic ion capture. The developed FeS x @MOF-808/Ti 3 C 2 T x sensor offers a robust platform for reliable As(III) detection in diverse water matrices. This innovation contributes to environmental monitoring, providing a cost-effective and efficient method for arsenic detection, particularly in resource-limited regions. The findings underscore the potential of integrating advanced materials into electrochemical sensors, thereby paving the way for future developments in sustainable water quality management.
研究领域:
环境科学
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材料科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2024
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IF 8.3
Fan Liu,Wenbo Li,Yuan Liang,Xianhua Zhang,Dongxiao Ji,Hengtao Liang,Mengyu Yuan,Yanchao Zhao,Haozhe Tang,Xiang Li,Jianxin He,Weili Shao
Functional materials that can quickly absorb and degrade mustard gas are essential for chemical warfare emergency response kits. In this study, a fiber membrane with excellent adsorption and catalytic degradation activity was developed by solution blow spinning polystyrene (PS)/polyurethane (PU) and hydrothermal in situ growth of a zirconium-based MOF (MOF-808). The mechanical properties of the PS/PU fibers were improved by adding a trimethylolpropane tris (2-methyl-1-aziridine propionate) (TTMA) cross-linking agent. Moreover, the C═O bonds in TTMA provided abundant growth sites for MOF-808 in the hydrothermal process, thereby greatly increasing the loading capacity. The fiber surface was completely covered with the MOF-808 particles within 24 h. The PS/PU/TTMA/MOF-808 fiber membrane was used for the catalytic degradation of 2-chloroethyl ethyl sulfide (CEES). The degradation efficiency reached 97.7% after 72 h, indicating its great application potential in emergency wiping cloths for mustard gas adsorption and degradation.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Guangqin Shi,Ting He,Haian Li,Zhao Yang,Wu Lei,Mingzhu Xia,Yu Tao
In a water solution and with a low reaction temperature of 85 °C, the green preparation of lanthanum-modulated MOF-808 (Zr) was realized, the obtained La-MOF-808 have smaller grain size, larger specific surface area, higher pore volume and larger average pore diameter. When the molar ratio of La: Zr=1:1, 1L-MOF-808 had the best fluoride ion removal performance, and its maximum adsorption capacity for F - reached 101.4 mg/g, which was higher than that of the unmodulated MOF-808 and some other reported fluorine adsorbents. Meanwhile, the regeneration experiment demonstrated that even after five cycles, 1L-MOF-808 retained 73.8 % of its initial adsorption capacity, highlighting its commendable reusability. In addition, when 1L-MOF-808 was applied to actual fluorine-containing wastewater, with the fluoride ion concentration of 25.3 mg/L and an adsorbent dosage of 0.6 g/L, 1L-MOF-808 exhibited excellent resistance to anionic interference (SO 4 2- , Cl - ), the concentration of fluoride ions in effluent was lower than 10 mg/L, meeting the stipulations of fluoride ion discharge outlined in GB39371–2020. Further adsorption mechanism investigation revealed that 1L-MOF-808's affinity for F - was attributed to electrostatic interaction and ligand exchange. Overall, the as-synthesized 1L-MOF-808 not only presents an environmentally friendly approach to producing MOF materials without organic solvents but also develops a new strategy for the design of high-performance adsorbent for effectively removing fluoride ions from wastewater.
研究领域:
环境科学
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材料科学
✓ 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）