Efficient Recovery of Neodymium in Acidic System by Free-Standing Dual-Template Docking Oriented Ionic Imprinted Mesoporous Films
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- 作者：Xudong ZhengFusheng Zhang ; Enli Liu ; Xuechao Xu ; Yongsheng Yan
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2017
- 出版时间：January 11, 2017
- 年：2017
- 卷：9
- 期：1
- 页码：730-739
- 全文大小：654K
- ISSN：1944-8252
文摘
Neodymium (Nd) is critical component of sintered neodymium magnets. Separation of Nd from consumer magnets has attracted a widespread attention. In this paper, we presented free-standing ionic imprinted mesoporous film materials for facile and highly efficient targeted separation of Nd from permanent magnets by dual-template docking oriented ionic imprinting (DTD-OII) method. DTD-OII is based on dual-template docking oriented molecular imprinting. Compared with conventional imprinting, this novel strategy does not need extra steps, but significantly advance imprinted efficiency. With optimization of functional monomer, our free-standing dual-template docking oriented ionic imprinted mesoporous films exhibit excellent adsorption of Nd by solid–liquid extraction. The Nd adsorption capacity for optimized films was 34.98 mg g<sup>–1sup> under pH = 3.0. The distribution coefficient of Nd was 636 mL g<sup>–1sup>, which indicates films possess significantly selectivity of Nd. In addition, efficient dual-template docking oriented ionic imprinting makes films demonstrating an outstanding of reusability by cycle test, which appreciating their potential for industrial application.