Fabrication of ZIF-300 membrane and its application for efficient removal of heavy metal ions from wastewater

IF 5.4 2区医学 Q2 MATERIALS SCIENCE, BIOMATERIALS ACS Biomaterials Science & Engineering Pub Date : 2019-02-15 DOI:10.1016/j.memsci.2018.10.080

Jianwei Yuan , Wei-Song Hung , Haipeng Zhu , Kecheng Guan , Yufan Ji , Yangyang Mao , Gongping Liu , Kueir-Rarn Lee , Wanqin Jin

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引用次数: 70

Abstract

Membrane technology is an energy-efficient approach for purification of wastewater. In this work, for the first time, a novel pure zeolite imidazolate framework-300 (ZIF-300) MOF membrane was fabricated and applied for removing heavy metal ions from wastewater. The fine structure of ZIF-300 layer was characterized by positron annihilation spectroscopy technique. Cross-flow and long-term operation test was also carried out to investigate the membrane stability. The obtained ZIF-300 membrane exhibited a high and stable performance with the water permeance of 39.2 L/m² h bar and rejection rate of 99.21% for CuSO₄. This high separation performance combined the extraordinary stability demonstrated that the as-prepared pure ZIF-300 MOF membrane could be a potential candidate for the water treatment.

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ZIF-300膜的制备及其在废水中重金属离子高效去除中的应用

膜技术是一种高效节能的污水净化方法。本文首次制备了一种新型纯咪唑酸分子筛骨架-300 (ZIF-300) MOF膜，并将其应用于废水中重金属离子的去除。利用正电子湮没光谱技术对ZIF-300层的精细结构进行了表征。对膜的稳定性进行了交叉流动和长期运行试验。所制得的ZIF-300膜性能稳定，水透率为39.2 L/m2 h bar，对CuSO4的去除率为99.21%。这种高分离性能加上非凡的稳定性表明，制备的纯ZIF-300 MOF膜可能是水处理的潜在候选者。

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来源期刊

ACS Biomaterials Science & Engineering Materials Science-Biomaterials

CiteScore

10.30

自引率

3.40%

发文量

413

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