Highly Water-Stable Zirconium Metal Organic Framework UiO-66 Membranes Supported on Alumina Hollow Fibers for Desalination
Highly Water-Stable Zirconium Metal Organic Framework UiO-66 Membranes Supported on Alumina Hollow Fibers for Desalination
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DOI：
10.1021/jacs.5b02276
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发表时间：
2015-06-10
影响因子：
15
通讯作者：
Li, Kang
中科院分区：
文献类型：
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作者：
Liu, Xinlei;Demir, Nilay Keser;Li, Kang
在这项研究中，连续锆（IV）基金属有机骨架（Zr-MOF）膜的制备。纯相Zr-MOF（即，采用原位溶剂热法在氧化铝中空纤维上制备了UiO-66）多晶膜。进行单一气体渗透和离子排斥测试以确认膜的完整性和功能性。该膜表现出优异的多价离子排斥（例如，Ca 2+为86.3%，Mg 2+为98.0%，Al 3+为99.3%），具有中等渗透性（0.14 L m（-2）h（-1）bar（-1））和良好渗透性（0.28 L m（-2）h（-1）bar（-1）μ m）。得益于UiO-66材料优异的化学稳定性，在各种测试中，对于各种盐溶液长达170小时，均未观察到膜性能下降。高分离性能结合其出色的水稳定性表明，开发的UiO-66膜作为一个有前途的候选人的水脱盐。
In this study, continuous zirconium(IV) based metal-organic framework (Zr-MOF) membranes were prepared. The pure-phase Zr-MOF (i.e.,, UiO-66) polycrystalline membranes were fabricated on alumina hollow fibers using an in situ solvothermal synthesis method. Single-gas permeation and ion rejection tests were carried out to confirm membrane integrity and functionality. The membrane exhibited excellent multivalent ion rejection (e.g., 86.3% for Ca2+, 98.0% for Mg2+, and 99.3% for Al3+) on the basis of size exclusion With moderate permeance (0.14 L m(-2) h(-1) bar(-1)) and good permeability (0.28 L m(-2) h(-1) bar(-1) mu m). Benefiting from the exceptional chemical stability Of the UiO-66 material, no degradation of membrane performance was observed for various tests up to 170 h toward a wide range of saline solutions. The high separation performance combined with its outstanding water stability suggests the developed UiO-66 membrane as a promising candidate for water desalination.