{"title":"Synergistic Nanoarchitectonics: Precision Membrane Engineering for Rare Earth Selective Separation","authors":"Zixiao Lv, Xin Zhang, Qifeng Gao, Chuanxi Wen, Yuqi He, HongXin Tan, Lijuan Qian, Wei Qi, Ximeng Chen, Zhan Li","doi":"10.1002/adfm.202409274","DOIUrl":null,"url":null,"abstract":"<p>Rare earth elements (REEs) are vital in high-tech industries and defense due to their strategic significance. Crafting an efficient membranes channel for REE separation poses a significant challenge. Employing 2-methylimidazole-hydrolyzed OH<sup>−</sup>, dopamine polymerization is initiated and then Zn<sup>2+</sup> coordinates with 2-methylimidazole on PDA surfaces. The confined symbiotic reaction yields 2D vertical heterojunctions of GO/ZIF-8/PDA (G/Z/P). During separation, partially dehydrated smaller hydrated lanthanide ions preferentially access interlayers, expanding and stabilizing the interlayer space by coordinating with PDA, thus excluding larger hydrated scandium ions from the membranes. Some scandium ions entering interlayer channels are sequestered by N in size-matched ZIF-8 pores. This distinctive mechanism facilitates selective scandium separation from other REEs (other REEs/Sc selectivity ≈68.73), achieving nearly complete Sc<sup>3+</sup> rejection in a single step. The methodology offers unprecedented insights into precise nano-space material synthesis, indicating promising strides in advancing scandium production.</p>","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":null,"pages":null},"PeriodicalIF":18.5000,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Functional Materials","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/adfm.202409274","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Rare earth elements (REEs) are vital in high-tech industries and defense due to their strategic significance. Crafting an efficient membranes channel for REE separation poses a significant challenge. Employing 2-methylimidazole-hydrolyzed OH−, dopamine polymerization is initiated and then Zn2+ coordinates with 2-methylimidazole on PDA surfaces. The confined symbiotic reaction yields 2D vertical heterojunctions of GO/ZIF-8/PDA (G/Z/P). During separation, partially dehydrated smaller hydrated lanthanide ions preferentially access interlayers, expanding and stabilizing the interlayer space by coordinating with PDA, thus excluding larger hydrated scandium ions from the membranes. Some scandium ions entering interlayer channels are sequestered by N in size-matched ZIF-8 pores. This distinctive mechanism facilitates selective scandium separation from other REEs (other REEs/Sc selectivity ≈68.73), achieving nearly complete Sc3+ rejection in a single step. The methodology offers unprecedented insights into precise nano-space material synthesis, indicating promising strides in advancing scandium production.
期刊介绍:
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