石墨烯
萃取(化学)
氧化物
铀
膜
阳极
材料科学
化学工程
化学
无机化学
核化学
纳米技术
冶金
电极
色谱法
物理化学
有机化学
生物化学
工程类
作者
Bing Yao,Fang Zhou,Yue Hu,Zhizhen Ye,Xinsheng Peng
出处
期刊:Langmuir
[American Chemical Society]
日期:2024-02-26
卷期号:40 (10): 5348-5359
标识
DOI:10.1021/acs.langmuir.3c03821
摘要
The challenge of removing trace levels of heavy metal ions, particularly uranium, from wastewater is a critical concern in environmental management. Uranium, a key element in long-term nuclear power generation, often poses significant extraction difficulties in wastewater due to its low concentration, interference from other ions, and the complexity of aquatic ecosystems. This study introduces an anodic electrodeposited hierarchical porous 2D metal–organic framework (MOF) Cu-BDC-NH2@graphene oxide (GO) membrane for effective uranium extraction by mimicking the function of the superb-uranyl-binding protein. This membrane is characterized by its hierarchical pillared-layer structures resulting from the controlled orientation of Cu-BDC-NH2 MOFs within the laminated GO layers during the electrodeposition process. The integration of amino groups from 2D Cu-BDC-NH2 and carboxylate groups from GO enables a high affinity to uranyl ions, achieving an unprecedented uranium adsorption capacity of 1078.4 mg/g and outstanding selectivity. Our findings not only demonstrate a breakthrough in uranium extraction technology but also pave the way for advancements in water purification and sustainable energy development, proposing a practical and efficient strategy for creating orientation-tunable 2D MOFs@GO membranes tailored for high-efficiency uranium extraction.
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