title: Efficient Recovery of Neodymium in Acidic System by Free-Standing Dual-Template Docking Oriented Ionic Imprinted Mesoporous Films.
abstract: 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-1under pH = 3.0. The distribution coefficient of Nd was 636 mL g-1, 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.
authors.affiliation: School of Chemistry & Chemical Engineering, Jiangsu University , Zhenjiang 212013, PR China.
authors.forename: Xudong
authors.identifier: http://orcid.org/0000-0003-2688-4855
authors.initials: X
authors.lastname: Zheng
authors.affiliation: School of Chemistry & Chemical Engineering, Jiangsu University , Zhenjiang 212013, PR China.
authors.forename: Fusheng
authors.initials: F
authors.lastname: Zhang
authors.affiliation: School of Chemistry & Chemical Engineering, Jiangsu University , Zhenjiang 212013, PR China.
authors.forename: Enli
authors.initials: E
authors.lastname: Liu
authors.affiliation: School of Chemistry & Chemical Engineering, Jiangsu University , Zhenjiang 212013, PR China.
authors.forename: Xuechao
authors.initials: X
authors.lastname: Xu
authors.affiliation: School of Chemistry & Chemical Engineering, Jiangsu University , Zhenjiang 212013, PR China.
authors.forename: Yongsheng
authors.initials: Y
authors.lastname: Yan
keywords: biotemplate; dual-template docking orienting; imprinted mesoporous films; neodymium recovery; selective separation