离子印迹聚合物回收关键稀散金属的研究进展

Research Progress on Recovery of Critical Scattered Metals by Ion−imprinted Polymers

  • 摘要: 关键稀散金属对世界各国的高科技和未来能源的发展具有十分重要的作用,而且稀散金属的储量相对稀少且地域分布高度不均,因此关键稀散金属回收的战略意义不言而喻。传统的回收方法具有分离效率高、应用范围广、适应性强等优点,但存在环境污染大和工艺成本高的缺点。离子印迹回收法有传质阻力小、吸附量大、模板易去除、吸附速率快、重复使用性良好等优点,离子印迹聚合物吸附材料对模板离子具有强识别能力,对其可实现高选择吸附。从合成原理、反应原料、制备工艺方法等方面对离子印迹聚合物吸附材料近期研究进展进行了概述。重点从目标离子和载体材料这两方面,总结和分析了离子印迹聚合物吸附材料的最新进展和当前发展中所遇到的问题,并对离子印迹法回收关键稀散金属的发展趋势和前景进行了展望。

     

    Abstract: Critical scattered metals (CSMs) play vital roles in the development of high technology and energy to all countries in the future world. Moreover, the reserves of CSMs are relatively rare and the geographical distribution is unevenly high, so the recycling of key scarce metal is of great significance to our strategy. Traditional recovery methods feature high separation efficiency, wide application range and strong adaptability, while it has the disadvantages of high environmental pollution and high process cost. The ion imprinted recovery method possesses low mass transfer resistance, large adsorption capacity, easy removal of template, fast adsorption rate and good reusability. The ion imprinted polymers (IIPs) show strong recognition for template ions and adsorption performance with high selectivity. Recent advances on IIPs are reviewed from the aspects of synthetic principle, reaction raw materials and preparation process in this paper. The encountered problems with the development of IIPs are summarized and analyzed combined with target ions and carrier materials. In addition, the development trend and prospect of IIPs recovery of CSMs are prospected.

     

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