Calix[4]arenes functionalized dual‐imprinted mesoporous film for the simultaneous selective recovery of lithium and rubidium. (10th August 2018)

• Record Type: Journal Article
• Authors: Wang, Yuanyuan; Xu, Jicheng; Yang, Dongya; Zhang, Tao; Qiu, Fengxian; Pan, Jianming
• Is Part Of: Applied organometallic chemistry. Volume 32:Number 10(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-08-10
• Subjects: calix[4]arenes -- ionic imprinting -- lithium and rubidium recovery -- mesoporous films; Organometallic chemistry -- Periodicals; Organometallic compounds -- Periodicals; 547.05
• DOI: 10.1002/aoc.4511
• Languages: English
• ISSNs: 0268-2605

Abstract

Abstract : Calixarenes have been drawing tremendous interest due to their special structure, superior properties and numerous applications. In this work, a novel adsorbent material, calix[4]arenes functionalized dual‐imprinted mesoporous film (DIMFs) for the simultaneous selective recovery of Li(I) and Rb(I), was prepared via surface ionic imprinting. Compared with ordinary adsorbent materials, the synthesis process of the films used a cheap bio‐template and did not require extra steps but significantly enhances adsorption properties. The morphology and structure of prepared DIMFs were characterized by scanning electron microscopy, transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT‐IR) and nitrogen adsorption–desorption measurements. Adsorption parameters (pH and temperature), adsorption kinetics and adsorption isotherms of the DIMFs were investigated by adsorption experiments. This novel adsorbent has inorganic–organic hybrid frameworks, high specific surface area and uniform pore size. The Langmuir and Freundlich isotherms, pseudo‐first‐order and pseudo‐second‐order kinetics of DIMFs were investigated; suggesting that the adsorption data well fits the Langmuir isotherm model, and the adsorption kinetics can be described by the pseudo‐second‐order kinetic model. In addition, dual‐imprinted mesoporous film exhibited superior selectivity for Li(I) and Rb(I). Cycle test demonstrated an outstanding of reusability, which appreciating their potential for industrial application. Abstract : A novel adsorbent material, calix[4]arenes functionalized dual‐imprinted mesoporous film (DIMFs) was prepared via surface ionic imprinting. The DIMFs exhibited superior simultaneous selectivity for Li(I) and Rb(I).