Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Xuzhao Gao,Yueyang Xu,Yan Yin,Ning Gu,Yongping Zeng
The adsorption desulfurization technology presents remarkable advantages and is a promising method because of its affordability, gentle operating conditions. Metal-organic frameworks (MOFs) have garnered significant attention owing to their remarkable features, including large specific surface areas, pore volume and the designable structure. The hierarchical porous CuBTC-DMA was successfully synthesized by adding salicylic acid and using the hydrothermal method. Subsequently, Ni ions were introduced into the structure using ion-exchange method. It was found that the doping of salicylic acid and Ni ions did not significant alter the structure of the material. The new type of π-complexed adsorbent, Ni@HP-CuBTC-DMA, was prepared. The results of adsorption desulfurization experiments showed that Ni@HP-CuBTC-DMA-1.5(0.2 M) had the highest adsorption capacity, with the maximum adsorption amounts of 25.63 mg S/g and 41.06 mg S/g for thiophene and benzothiophene , respectively. In the toluene competition experiment, the adsorption amount of thiophene could still reach 19.25 mg S/g. The results of regeneration experiments demonstrate that Ni@HP-CuBTC-DMA-1.5(0.2 M) still has excellent adsorption capacity after four cycles.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
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
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
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IF 9.965
Shasha Zheng,Huijie Zhou,Huaiguo Xue,Pierre Braunstein,Huan Pang
The poor conductivity, unsatisfactory stability and easy aggregation of metal–organic framework (MOF) nanomaterials have been recognized as the main reasons that prevent their practical application. Here, we report the highly conductive and cyclic-stable Ti 3 C 2 MXene@pillared-layer [Ni(thiophene-2,5-dicarboxylate)(4,4′-bipyridine)] n MOF composites (MXene@Ni-MOF). Based on the hard-soft-acid-base principle, the pillared-layer Ni-MOF porous structure with Ni-N coordination bonds confer better structural stability. The Ni-MOF nanosheets are immobilized by the MXene , leading to fast charge transfer between the Ni-MOF and MXene, solving the problem of poor conductivity of Ni-MOF, while avoiding the agglomeration of Ni-MOF nanosheets. Moreover, the strong interaction between the organic ligands of Ni-MOF and surface functional groups of MXene plays a key role: it reduces the exposure of surface groups of MXene, limits the oxidation of MXene, and increases its layer spacing, thus facilitating the rapid ion transport. The MXene@Ni-MOF exhibits a high specific capacitance (979 F g −1 at 0.5 A g −1 ) and the new aqueous asymmetric supercapacitor device displays an excellent cycling property with only 2% decay after 5000 cycles.
研究领域:
材料科学
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能源存储
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产品关联
DOI
PubMed
高影响因子
MATERIALS LETTERS
·
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
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2021
·Vol. 32
·期 14
·19284-19296
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IF 2.478
Li Sirui,Zhao Hongwei,Wang He,Zhu Hang,Zhang Hehan,Yu Haitao,Yang Tianye
At present, functional materials such as metal sulfides, metal oxides and so on synthesized with metal–organic frameworks (MOFs) as the general templates or precursors in the field of gas sensing have been a new strategy to improve gas-sensing performance. In this work, a unique MOF-5-derived ZnO nanochains (NCs) sample is synthesized through a conventional solvothermal method with subsequent annealing process. The ZnO NCs-based sensor exhibits outstanding sensing performance such as fast response time (< 1 s) and high response value 34.7 toward 20 ppm triethylamine (TEA). The ZnO NCs sample was characterized by a series of methods (XRD, SEM, XPS and so on). The excellent TEA-sensing properties can be ascribed to the unique nanochain morphology and a plenty of oxygen vacancies of the ZnO crystal through the analysis of the morphology and composition of the sample. In addition, a possible growth mechanism comes up and the sensing mechanism is discussed. The superior TEA sensing performance makes the as-synthesized MOF-5 derived ZnO NCs sample a potential candidate for TEA fast detection.
研究领域:
材料科学
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化学传感器
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纳米材料合成
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DOI
高影响因子
ChemNanoMat
·
2021
·Vol. 7
·期 8
·906-909
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IF 3.154
Jin Yu,Yang Cao,Qian Liu,Yonglan Luo,Yang Liu,Xifeng Shi,Abdullah M. Asiri,Tingshuai Li,Xuping Sun
It's highly desirable to devise and develop non-precious metal catalysts for efficient water oxidation catalysis in alkaline solution. Herein, we report Co-MOF nanosheet arrays grown on the three dimensional conductive nickel foam (Co-MOF/NF) through a hydro-thermal process for efficient alkaline oxygen evolution electrocatalysis. Such catalyst displays an excellent electrochemical performance by achieving an overpotential of 290 mV at 20 mA cm −2 in 1.0 M KOH. Besides, it possesses both a good electrochemical stability and a high turnover frequency of 0.14 s −1 at the overpotential of 400 mV.
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
Food Bioscience
·
2024
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IF 4.8
Jiaxin Wen,Yuxin Guo,Xiangyu Li,Bingyang Wang,Huifang Wang,Xianghua Gao,Baolong Niu,Wenfeng Li
Antimicrobial packaging films are an effective means to avoid food infections. PVA has good film-forming and mechanical properties, but its water resistance and antimicrobial properties are insufficient. In this study, a rod-shaped Ag-MOF with photocatalytic properties was synthesized as an antimicrobial agent by a hydrothermal method using citrate esterified PVA as a film-forming substrate. The MICs of Ag-MOF against Escherichia coli and Staphylococcus aureus were 16 μg/mL and 32 μg/mL, respectively, and it had good biocompatibility. Under blue light irradiation, Ag-MOF induced the production of ROS, which increased the inhibition rate by more than 83.78%. The antimicrobial mechanism experiments showed that it caused irreversible damage to the bacterial cell membrane through the synergistic effect of Ag + and ROS. The best mechanical properties of the films were obtained at 3% citric acid content, with the water vapor transmission rate, water solubility and swelling rate reduced by 0.19 g·mm·m −2 ·h −1 ·kPa −1 , 65.33% and 11.26%, respectively. The antimicrobial rate of the composite film could reach more than 98% by adding only 1 MIC of Ag-MOF. In conclusion, photocatalytic antimicrobial agents have great potential for application in food packaging.
研究领域:
食品科学
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材料科学
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微生物学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Li Xu,Qiye Ju,Haiyan Jiang,Na Geng,Jianze Xiao,Ziqian Xue,Tingyu Zhu,Yangyang Guo
Heavy water (D 2 O) electrolysis is the primary technology for D 2 production, playing an irreplaceable role in fields such as nuclear fusion research and isotope tracing. However, the inherent similarity in chemical properties between H 2 O and D 2 O (with only a 1.4 °C difference in boiling points) poses significant challenges to their separation. Furthermore, the extremely low natural abundance of D 2 O (0.015 %) increases the difficulty and cost of separation, while traditional electrolysis and distillation techniques are highly energy intensive. Therefore, there is an urgent need to develop novel adsorbents for efficient and environmentally sustainable H 2 O/D 2 O separation. Herein, we used polydentate ligand 2, 5-dihydroxyterephthalic acid (DOBDC) and its derivatives 4,4́-(anthracene-9,10-diyl) bis (2-hydroxybenzoic acid (ABHB) as raw materials to prepare two novel high coordination Sr-MOFs namely IPE-1 and IPE-2, respectively. These MOFs were applied for efficient separation of H 2 O and D 2 O at room temperature. X-ray diffraction results reveal that one Sr atom in IPE-1 is coordinated with 9 oxygen atoms. This high coordination number results in the formation of ultra-small rectangular pores of approximately 2.5 Å. Adsorption isotherms of N 2 , CO 2 , H 2 O, and D 2 O indicate that the ultramicroporous structure of IPE-1 precludes efficient diffusion of CO 2 and H 2 O molecules into the MOF channels. In contrast, the activated IPE-2 exhibits good CO 2 , H 2 O, and D 2 O uptake capacities of 3 mmol/g, 8.38 mmol/g, and 6.51 mmol/g at 298 K, respectively. The Q st values and K sap values of H 2 O and D 2 O indicate that the adsorption rates of H 2 O were much higher than D 2 O under 0.2 < P/P 0 < 0.7, with a calculated ratio of approximately 1.26. This study not only provides appealing MOFs materials for efficient H 2 O/D 2 O separation at room temperature but also provides a new avenue for preparing adsorbents with high stability and high separation performance.
研究领域:
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
CRYSTENGCOMM
·
2019
·Vol. 21
·期 41
·6186-6195
·
IF 3.382
Qian-Qian Liu,Ke-Fen Yue,Xian-Jun Weng,Yao-Yu Wang
A novel two-dimensional Cd-based metal–organic framework, {[Cd(Hcpnc)(DMF)]·DMF·2H2O}n (Cd-MOF) has been synthesized successfully under solvothermal conditions by utilizing a multifunctional N,O-building block ligand, 2-(2,5-dicarboxylphenyl)nicotinic acid (H3cpnc), which is a new and virtually unexplored multifunctional pyridine-tricarboxylic building block. The product was isolated as a stable crystalline solid and was fully characterized by IR spectroscopy, elemental analyses, thermogravimetry and differential scanning calorimetry, powder X-ray diffraction, single-crystal X-ray diffraction analyses, and X-ray photoelectron spectroscopy. The solid-state luminescence properties of the Cd-MOF were studied at ambient temperature. The compound shows high selectivity and sensitivity for Cu2+ ions and nitrobenzene by the luminescence quenching behavior with excellent repeatability. Additionally, the Cd-MOF exhibits an excellent specific capacitance of 321 F g−1 at 0.5 A g−1 and it still retains 95.2% of the original capacitance after 1000 cycles. Therefore, the Cd-MOF as a kind of bifunctional material will have broad application prospects in luminescence detection and supercapacitors.
研究领域:
材料科学
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化学
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产品关联
DOI
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 45
·29177-29186
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IF 4.036
Zhao Qin,Yanqin Xu,Lin Liu,Min Liu,Hanjun Zhou,Liyue Xiao,Yuan Cao,Changguo Chen
Electrodes for supercapacitors made from metal–organic frameworks (MOFs) are still hindered by electron transfer properties. Therefore, an electrode composite material Ni-MOF@PPy was synthesized from a Ni-based metal–organic framework (Ni-MOF) doped with poly-pyrrole (PPy) using a simple chemical oxidation method to improve its electron transfer property. After introducing the electrochemically active substance K4Fe(CN)6 into the electrolyte, the composite material had a specific capacitance of 1815.4 F g−1 at a current density of 1 A g−1. Ni-MOF@PPy and active carbon (AC) as the positive and negative electrodes have been used, respectively, to assemble asymmetric supercapacitors (ASCs) in the KOH and K4Fe(CN)6 mixed electrolyte. This novel Ni-MOF@PPy//AC ASC energy storage device can provide 38.5 W h kg−1 energy density, 7001 W kg−1 power density, and 90.2% capacitance retention after 3000 cycles. Therefore, Ni-MOF@PPy//AC ASC is an excellent energy storage device with practical and economic value. The synergistic effect strategy proposed in this work can be easily applied to develop other MOFs with unique crystal structures as well as other redox active additives, providing new avenues and research ideas for exploring novel energy storage devices.
研究领域:
材料科学
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电化学
·
能源存储技术
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产品关联
DOI
PubMed
高影响因子
Frontiers in Chemistry
·
2021
·
IF 5.221
Hu Qin,Qin Jie,Wang Xiao-Feng,Ran Guang-Ying,Wang Qiang,Liu Guang-Xiang,Ma Jian-Ping,Ge Jing-Yuan,Wang Hai-Ying
A non-enzymatic electrochemical sensor for glucose detection is executed by using a conductive metal–organic framework (MOF) Cu-MOF, which is built from the 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) ligand and copper acetate by hydrothermal reaction. The Cu-MOF demonstrates superior electrocatalytic activity for glucose oxidation under alkaline pH conditions. As an excellent non-enzymatic sensor, the Cu-MOF grown on Cu foam (Cu-MOF/CF) displays an ultra-low detection limit of 0.076 μM through a wide concentration range (0.001–0.95 mM) and a strong sensitivity of 30,030 mA μM−1 cm−2. Overall, the Cu-MOF/CF exhibits a low detection limit, high selectivity, excellent stability, fast response time, and good practical application feasibility for glucose detection and can promote the development of MOF materials in the field of electrochemical sensors.
研究领域:
材料科学
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电化学传感器
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
Sustainability
·
2025
·Vol. 17
·期 7
·3060
·
IF 3.3
Junwei Feng,Gang Zhi,Xianjin Qi,Mengmeng Geng
Removing arsenic from industrial wastewater remains a crucial task. To protect public health and safety and address environmental pollution, there is an urgent need for a material that can efficiently remove arsenic from wastewater. In this study, a simple and highly efficient adsorbent, namely, a Co/Mn bimetallic-based organic framework (CoMn-MOF-74) adsorbent, was prepared by a hydrothermal synthesis method. Experimental results demonstrate that CoMn-MOF-74 exhibits excellent adsorption capacity for arsenic ions in wastewater. It was found that the optimal Co/Mn molar ratio of the adsorbent is 1:1. The CoMn-MOF-74 adsorbent compensates for the deficiencies in the adsorption performance of Co-MOF-74 and Mn-MOF-74, increasing the adsorption rate and the highest adsorption capacity. The maximum adsorption rate of CoMn-MOF-74 is 93.4%, and the highest adsorption capacity is 531 mg/g. Fitting CoMn-MOF-74 according to two categories of models, specifically, the adsorption isotherm and adsorption kinetics models, indicated that CoMn-MOF-74 adheres to the Langmuir model and pseudo-second-order kinetic model. The adsorption process is mainly chemical adsorption and monolayer adsorption. Analysis by XPS revealed that metal–oxygen groups and hydroxyl groups play important roles in the adsorption process. In conclusion, the CoMn-MOF-74 adsorbent shows excellent prospects in the field of arsenic adsorption from wastewater and is a promising arsenic-removing adsorbent.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
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