Facile Fabrication of a Continuous ZIF‐67 Membrane for Efficient Azeotropic Organic Solvent Mixture Separation

Sun, Hongqi; Wang, Fengkai; Li, Xiaoting; Caro, Jürgen; Meng, Hong; Wang, Naixin; An, Quan‐Fu

doi:10.1002/ange.202300262

Cited by 2 publications

(1 citation statement)

References 37 publications

(20 reference statements)

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“…3a). The characteristic peaks of Co-MOF at 7.33°, 10.38°, 12.70°, 18.01°, represented Co-MOF (001), ( 002), ( 112) and ( 222) peak of Co-MOF, respectively, con rming the successful synthesis of Co-MOF 10 .…”

Section: Characterization Of Cu-mof@co-mofmentioning

confidence: 72%

Cu-Co bimetallic organic framework as effective adsorbents for enhanced adsorptive removal of tetracycline antibiotics

Yue,

Ding,

Yin

et al. 2024

Preprint

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In this study, the removal effect of a new MOF-on MOF adsorbent based on Cu-Co bimetallic organic frameworks on tetracycline antibiotics (TCs) in water system was studied. The adsorbent (Cu-MOF@Co-MOF) were synthesized by solvothermal and self-assembly method at different concentrations of Co2+/ Cu2+. The characterization results of SEM, XRD, XPS, FTIR and BET indicated that Cu-MOF@Co-MOF had the best physicochemical properties with the molar ratio of Co2+: Cu2+ at 5:1. In addition, the Cu-MOF@Co-MOF have a high specific surface area and bimetallic clusters, which can achieve multi-target synergistic adsorption of TCs. Based on above advantages, Cu-MOF@Co-MOF provided a strong affinity and can efficiently adsorb more than 80% of pollutants in just 5 to 15 minutes using only 10 mg of the adsorbent. The adsorption capacity of tetracycline and doxycycline was 434.78 and 476.19 mg/g, respectively, showing satisfactory adsorption performance. The fitting results of the experimental data are more consistent with the Langmuir isotherm model and pseudo-second-order kinetic model. Thermodynamic experiments showed that Cu-MOF@Co-MOF was thermodynamically advantageous for the removal of TCs, and the whole process was spontaneous. The excellent adsorption capacity and rapid adsorption kinetics indicate the prepared MOF-on MOF adsorbent can adsorb TCs economically and quickly, and have satisfactory application prospects for removing TCs in practical environments. The results of the study pave a new way for preparing novel MOFs-based water treatment materials with great potential for efficient removal.

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Section: Characterization Of Cu-mof@co-mofmentioning

confidence: 72%

Cu-Co bimetallic organic framework as effective adsorbents for enhanced adsorptive removal of tetracycline antibiotics

Yue,

Ding,

Yin

et al. 2024

Preprint

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Induced Synthesis of an Al-Based CAU-10 Tubular Membrane for the Highly Efficient Separation of MeOH/MTBE by Pervaporation

Zhao,

Gao,

Zhu

et al. 2023

Ind. Eng. Chem. Res.

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The preparation of stable metal−organic framework tubular membranes for liquid mixture separation has always been a tough problem. Herein, a flexibly prepared, continuous, and stable Al-based CAU-10 membrane with ceramic tubes as support was developed by a thin γ-Al 2 O 3 layer induction method and employed for the first time in the separation of MeOH/MTBE azeotropic mixtures through pervaporation. The γ-Al 2 O 3 layer introduced on the tube by the dip-coating technique not only facilitated the crystal nucleation and continuous growth of CAU-10 membranes but also reinforced the membrane stability by acting as anchoring sites between the membrane and the substrate. The as-prepared CAU-10 tubular membrane exhibited excellent separation performance for MeOH/MTBE mixtures owing to its suitable pore size and good hydrophilicity. For the separation of 14.3 wt % MeOH/MTBE azeotropic mixtures, the membrane displayed a permeation flux of 1.76 kg/(m 2 h) and a high separation factor of 2041 at 50 °C, which is better than most of the membranes reported for the pervaporation separation of MeOH/MTBE mixtures. More excitedly, the CAU-10 tubular membrane continued to be tested for more than 7 days without any obvious change in pervaporation performance, demonstrating its outstanding operational and hydrothermal stability. Accordingly, the CAU-10 tubular membrane would be a promising alternative to separate the MeOH/MTBE azeotropic mixtures due to its easy preparation, high performance, and excellent stability.

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Facile Fabrication of a Continuous ZIF‐67 Membrane for Efficient Azeotropic Organic Solvent Mixture Separation

Cited by 2 publications

References 37 publications

Cu-Co bimetallic organic framework as effective adsorbents for enhanced adsorptive removal of tetracycline antibiotics

Cu-Co bimetallic organic framework as effective adsorbents for enhanced adsorptive removal of tetracycline antibiotics

Induced Synthesis of an Al-Based CAU-10 Tubular Membrane for the Highly Efficient Separation of MeOH/MTBE by Pervaporation

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