Journal of Computational and Theoretical Nanoscience
·
2017
·Vol. 14
·期 7
·3203-3208
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IF 0
Tang Zhuxing,Lu Guangming,Ai Meimei
With hydrothermal method synthesized Fe3O4@PDA@MOF-199 magnetic nano-materials and the materials were characterized through scanning electron microscopy, energy spectrum diagram, fourier infrared and vibrating sample magnetometer. Metal organic framework materials
has a large surface area and a good adsorption for heavy metal ions, and the magnetic nanomaterial was separated easily via a magnet from a solution. The optimal condition: material consumption of 5 mg, shock time for 1 h, pH = 5 and under the condition saturated adsorption amount of Fe3O4@PDA@MOF-199
magnetic nanomaterials to Pb2+ was 539 mg g−1. And using 0.1 mol L−1 EDTA solution as eluent to desorb the saturated Fe3O4@PDA@MOF-199 magnetic nanomaterials, the elution rate can reach 89.44%. In this paper, Fe3O4@PDA@MOF-199
magnetic nanomaterials were used to absord Pb2+ in actual sample.
研究领域:
材料科学
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环境科学
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DOI
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 7
·4528-4540
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IF 4.682
Chen Mingyan,Zhang Yao,Chen Jie,Liu Yucheng,Li Lingli,Du Guoyong
The porous material MOF-199 with a large specific surface area is widely used in the field of adsorption, but the single MOF material is not stable enough and the adsorption performance needs to be improved, so MOFs materials are often modified by combining with other materials. The composite material Fe 3 O 4 -ATP/MOF-199 (FAM) was prepared by solvothermal method combined with MOF-199, attapulgite (ATP) and Fe 3 O 4 . It was used in the static adsorption experiment of model oil to study the desulfurization performance, including the influence of external conditions such as adsorption time, temperature and the mass ratio of model oil to adsorbent on adsorption capacity. The structure and morphology of the adsorbent were characterized by XRD, FT-IR, SEM, VSM and BET. The experimental results show that the doping of attapulgite reduces the particle size of magnetic MOF-199 and makes the adsorbate closer to the active center of the adsorbent so as to improve the adsorption efficiency.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Dandan Hao,Ping Wang,Ju Liu,Huanhui Zhan,Tiantian Zhou,Bo Fu
MOF-199 is considered to be an excellent CO 2 adsorbent owing to its substantial specific surface area, suitable pore structure and abundant sorption sites. However, powdered MOF-199 is prone to agglomeration and has poor recyclability. Herein, we proposed a MOF-199-based adsorbent by combining the MOF synthesis process with traditional papermaking process. Through such a design, MOF-199 particles are adhered on the surface of wood pulp fiber. The sufficient hydroxyl groups and electrostatic forces of cellulose facilitates the homogeneous and tight adhesion of MOF crystals. The optimal MP-4 sample demonstrated a high CO 2 adsorption capacity (1.80 mmol·g ‐−1 at 25 °C) and good CO 2 /N 2 selectivity (30.06). Moreover, the composite sorbent can be easily regenerated. The adsorption mechanism was analyzed by the density functional theory approach. The simulation results showed that the carboxyl functional groups with a large number of oxygen atoms and active metal sites are the key to boost the CO 2 adsorption performance.
研究领域:
材料科学
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环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2023
·
IF 4.2
Xiaomi Meng,Zhongde Dai,Charles Q Jia,Lin Yang,Wenju Jiang,Lu Yao,Qiying Zhou,Bo Xu
In this study, FAULSP(n)/MOF-199 composites with hierarchical porous structures have been synthesized by zeolite-induced in situ growth of MOF-199 and applied for efficient adsorption of toluene and acetone. The results revealed that the presence of FAULSP triggered morphology evolution and developed new structural defects of MOF-199 due to the coordination of FAULSP and the linker, resulting in a hierarchical porous structure of FAULSP(n)/MOF-199. The SBET of FAULSP(n)/MOF-199 ranged from 1013 to 1344 cm2 g–1, comparable to or even superior to that of MOF-199 (1035 cm2 g–1). FAULSP(n)/MOF-199 had more developed mesoporous structures (Vmes), increased from 0.027 cm3 g–1 of MOF-199 to 0.354 cm3 g–1 of FAULSP(15)/MOF-199. The integrated surface chemistry coupled with the derived hierarchical porous structure provided FAULSP(n)/MOF-199 a good adsorption property of both weakly polar toluene and strongly polar acetone. The FAULSP(4)/MOF-199 showed the best adsorption performance with saturated adsorption capacities of 430.2 and 311.1 mg g–1 of toluene and acetone at 25 °C and 1000 mg m–3. The FAULSP(n)/MOF-199 also exhibited excellent adsorption–desorption stability, with only 4.55 and 8.05% capacity loss of toluene and acetone after five adsorption–desorption cycles. According to the characterization before and after adsorption, the kinetic and thermodynamic studies knew that the adsorption of toluene and acetone on FAULSP(n)/MOF-199 was mostly a physical-adsorption process, in which both monolayer and multilayer adsorption coexisted.
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
ANALYTICAL CHEMISTRY
·
2014
·
IF 5.825
Zhuomin Zhang,Yichun Huang,Weiwei Ding,Gongke Li
Ethylene, an important plant hormone, is of utmost importance during many developmental processes of plants. However, the efficient enrichment and analysis of trace ethylene still remains a challenge. A simple and mild multilayer interparticle linking strategy was proposed to fabricate a novel hybrid MOF-199 enrichment coating. Strong chemical interparticle linkages throughout the coating improved the durability and reproducibility of hybrid MOF-199 coating dramatically. This coating performed a significant extraction superiority of ethylene over commonly used commercial coatings, attributed to the multiple interactions including “molecular sieving effect”, hydrogen bonding, open metal site interaction, and π–π affinity. The hybridization of multiwalled carbon nanotubes (MWCNTs) with MOF-199 further improved the enrichment capability and also acted as a hydrophobic “shield” to prevent the open metal sites of MOF-199 from being occupied by water molecules, which effectively improved the moisture-resistant property of MOF-199/CNTs coating. Finally, this novel enrichment method was successfully applied for the noninvasive analysis of trace ethylene, methanol, and ethanol from fruit samples with relatively high humidity. The low detection limit was 0.016 μg/L for ethylene. It was satisfactory that trace ethylene could be actually detected from fruit samples by this noninvasive method. Good recoveries of spiked grape, wampee, blueberry, and durian husk samples were obtained in the range of 90.0–114%, 79.4–88.6%, 78.5–86.8%, and 85.2–105% with the corresponding relative standard deviations of 4.8–9.8%, 6.9–8.9%, 3.8–8.1%, and 9.3–10.5% (n = 3), respectively.
研究领域:
植物学
·
分析化学
✓ 已验证
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
·
IF 8.1
Mingxian Duan,Yeshuang Wang,Huiling Fan,Zhelin Su,Chao Yang,Jiawei Kou,Ju Shangguan
Thiophene (C 4 H 4 S) removal from coke oven gas is critical to its subsequent high valuable utilization but remains a challenge. MOF-199 was considered as a promising candidate for C 4 H 4 S adsorption removal owing to its nature of enriched opened Cu sites. However, the presence of mixed valence of Cu(II) and Cu(I) in MOF-199 makes it puzzling to their respective contribution to the removal of C 4 H 4 S. Herein, a series of MOF-199 with different Cu(I) contents were synthesized using different methods, including hydrothermal, solution diffusion, and ultrasonic, and their C 4 H 4 S adsorption performance were investigated. The respective contributions of Cu(II) and Cu(I) to the C 4 H 4 S removal was systematically discussed. The collected results indicated that although the samples prepared with different methods present a remarkable difference in textural characters, the latter was found to have a negligible influence on the C 4 H 4 S removal owing to MOF-199(H) affording an inferior surface area and pore volumes but performing the best C 4 H 4 S removal capacity of 53.7 mg S/g. The co-adsorption results of CH 3 SCH 3 and C 4 H 4 S indicated that the excellent performance of MOF-199(H) mainly attributed to the presence of Cu(I), which provides active sites for C 4 H 4 S adsorption through π complex coordination. Cu(II) species was also found to the C 4 H 4 S adsorption via soft-acid-base coordinated interaction, but its contribution is 8.3 mg S/g, only accounting for 15.5 %. Additionally, the adsorption of C 4 H 4 S on MOF-199(H) was found to follow the intra-particle diffusion model and the Langmuir models. Moreover, MOF-199(H) also exhibited an excellent regeneration performance due to the weak interaction between C 4 H 4 S and their opened Cu sites, the C 4 H 4 S adsorption capacity still reaches 50.6 mg S/g after three regeneration cycles, about 94 % of its initial value. The results collected in this study will provide new insights for the manipulation of performance of C 4 H 4 S adsorption on the MOF-199.
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
JOURNAL OF MATERIALS SCIENCE
·
2020
·Vol. 56
·期 4
·2979-2993
·
IF 3.553
Chen Mingyan,Wang Ziying,Liu Yucheng,Chen Jie,Liu Jie,Gan Dong
Abstract Preparation of magnetic functional MOF-199 composites with good adsorption performance and easy recovery by solvothermal method for removal of thiophene from model oil. Study focused on the desulfurization performance of composites under different adsorption time, adsorption temperature, oil to adsorbent ratio, competitive adsorption, reuse times conditions. The morphology and structure of the composites were characterized by XRD, FTIR, BET, VSM and EDS. And the experimental results show that the adsorbent achieved the best desulfurization effect under the condition of 30 °C and the oil to adsorbent ratio was 100 for 240 min. The adsorption effect was Fe 3 O 4 –COOH/MOF-199(FCM) > Fe 3 O 4 –NH 2 /MOF-199(FNM) > Fe 3 O 4 /MOF-199(FM), which due to FCM exhibited a more powerful interaction between –COOH and thiophene base. In addition, the desulfurization performance of the adsorbents was affected by addition of competitors toluene and cyclohexene in the model oil. Adsorbent showed excellent desulfurization performance after 5 reuses. Webber–Morris model and Freundlich model are suitable to describe the desulfurization process of adsorbents. Graphic abstract
研究领域:
化学工程
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2019
·
IF 3.131
Mingyan Chen,Jie Chen,Yucheng Liu,Jie Liu,Lingli Li,Bing Yang,Lili Ma
A new type of metal organic framework GO/Ni-MOF-199 was synthesized using the solvothermal method in combination with different amounts of graphene oxide (0%, 0.5%, 1.75% and 5%) in order to remove thiophene from model oil. The adsorption desulfurization performance was tested by removing thiophene from the n-octane/thiophene model oil. The thermal stability of composites is improved by modification. Adsorption capacity of MOF-199 was enhanced by doping Ni 2+ and graphene oxide (GO) with appropriate content. Bimetallic ions combine with the oxygen-containing function of GO to form a stronger synergistic effect. The synthesized samples are characterized using XRD , SEM, FTIR, BET, and TGA methods. By using the appropriate characterization methods, it is shown that an excessive GO content will damage the structures of the composites. The investigation’s results demonstrated that the maximum adsorption capacity of 1.75% GO/Ni-MOF-199 reached 50.38 mgS/g MOF at 35 ℃, and a v (oil) /m (absorbent) ratio of 150 ml/g occurred after 3.5 h of adsorption. Furthermore, the 1.75% GO/Ni-MOF-199 composites could be reused at least four times. The pseudo-second-order dynamic model and Langmuir model are more suitable to represent how the GO/Ni-MOF-199 materials adsorb thiophene from the model oil.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
RSC Advances
·
2014
·Vol. 4
·期 79
·41902-41909
·
IF 3.708
Tian Jin,Qiang Yang,Chun Meng,Jian Xu,Honglai Liu,Jun Hu,Hao Ling
The world is becoming more stringent on lowering the sulfur concentrations in fuels. To fulfill this expectation, a new type of magnetic desulfurization adsorbent, Fe3O4@PAA@MOF-199, was designed and fabricated using a facile two-step assembly approach, in which PAA inventively acted like a bridge to incorporate different amounts of magnetite Fe3O4 into a MOF-199 crystal matrix. Fe3O4@PAA@MOF-199s were demonstrated to be efficient adsorbents for the removal of S-compounds, such as thiophene, benzothiophene (BT) and dibenzothiophene (DBT), from a model fuel, and the sulfur saturated adsorption capacity followed the order of DBT > BT > thiophene. The magnetization of Fe3O4@PAA@MOF-199s ensured that the adsorbents had good performance in magnetic separation. The relative high adsorption capacity, the separation efficiency, as well as the stable recyclability indicated that magnetic Fe3O4@PAA@MOF-199 would be a promising adsorbent in adsorptive desulfurization.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2023
·
IF 7.4
Yibo Zhang,Wei Wang,Chunlai Liu,Peihang Shen,Zelong Liu,Jianglei Hu,Fengwei Shi
In this work, we successfully synthesized a novel composite (HPW@MOF-199/SBA-15C, PMS-15C) in which MOF-199 encapsulated HPW catalyst (named HPW@MOF-199) was confined in SBA-15C, which is the carboxy-functionalized SBA-15. Physicochemical properties of the composites PMS-15C were systemically characterized by N 2 adsorption–desorption isotherms, wide-angle and low-angle XRD, XPS, FT-IR, SEM, and TEM. The results exhibited that HPW@MOF-199 had been successfully synthesized and embedded into the SBA-15C pores by COOH on the surface of SBA-15C. Meanwhile, the composites PMS-15C exhibited high activity and excellent reuse properties in the esterification reaction of acetic acid and ethanol, and no evidence of aggregation, leaching, or inactivation of HPW@MOF-199 during repeated use. The good dispersion of HPW within the MOF-199 cage and the interaction between HPW@MOF-199 and SBA-15C may be responsible for the good catalytic activity as well as the high stability of PMS-15C.
研究领域:
化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Hong-Yan Zhang,Chao Yang,Qiang Geng,Hui-Ling Fan,Bao-Jun Wang,Meng-Meng Wu,Zhen Tian
A series of amine modified MOF-199 adsorbents were prepared by impregnation method for using H 2 S room temperature removal. The parent and functionalized materials were characterized by XRD , FT-IR, SEM, N 2 adsorption/desorption isotherms, and XPS . It was indicated that the structure of MOF-199 can be maintained after modification by appropriate tertiary amine triethanolamine (TEA), while primary amine monoethanolamine (MEA) and secondary amine diethanolamine (DEA) modification can destroy its structure due to the strong interaction with MOF-199. Breakthrough results showed that MOF-199 functionalized by TEA presented an improved H 2 S adsorption capacity of 2.74 mmol/g, higher than that of parent MOF-199 (1.67 mmol/g). Whereas, grafting of MEA and DEA into MOF-199 led to the sulfur capacity decrease to 0.83 mmol/g and 0.58 mmol/g, respectively. Calculation by density functional theory revealed that the binding energies of H 2 S adsorption on the TEA/MOF-199 were larger than that on bare MOF-199, which was considered to contribute to the improved adsorption. The enhanced binding energy of H 2 S on the TEA/MOF-199 was attributed to the hydroxyl in TEA.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2018
·
IF 6.434
Yan Gao,Ziyan Lv,Ruimin Gao,Gai Zhang,Ying Zheng,Jianshe Zhao
Fuel desulfurization as a crucial subject has aroused people's attention with the environmental problems becoming more and more important. Oxidative desulfurization (ODS) is one of the most promising methods due to its high efficiency, low cost, easy operation and mild reaction condition. With the loading of polyoxometalate (POM), a hybrid material (CNTs@MOF-199) supported catalysts (CNTs@MOF-199-POM) are designed and prepared using one-pot procedure. The novel catalysts are investigated by FT-IR, XRD, XPS, SEM and BET. Factors affecting the desulfurization, such as catalyst dosage, loading amount of POM, reaction temperature, agitation rate and reaction time, are evaluated, and the optimum reaction conditions are determined. The test results indicate that the catalyst CNTs@MOF-199-Mo 16 V 2 possesses superior catalytic activity, with a desulfurization efficiency of up to 98.30%. In addition, CNTs@MOF-199-Mo 16 V 2 exhibits an excellent reusability, and the catalytic efficiency is only slightly reduced after recycling for 7 times. Besides, the kinetic studies indicate that the desulfurization process belongs to apparent first-order kinetic reaction. And the apparent activation energy is 12.89 kJ/mol.
研究领域:
环境科学
·
催化化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）