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为高效的黄金开采而构建阴离子共价有机框架

Yequan Jiang¹, Jie Liu¹, Zhengcheng Huang¹

¹National Key Laboratory of Uranium Resources Exploration-Mining and Nuclear Remote Sensing, East China University of Technology, Nanchang, Jiangxi 344000, China. ecitluofeng@163.com.

Chemical communications (Cambridge, England)

|October 25, 2024

概括

一个新的离子共价有机框架 (ECUT-iCOF-5) 证明了特殊的黄金开采能力. 这种材料具有高容量,选择性和可回收性,可有效回收贵金属.

科学领域:

材料科学材料科学材料科学
无机化学无机化学有机化学
环境化学环境化学

背景情况:

联有机框架 (COF) 是具有可调节性质的晶体多孔聚合物.
离子液体为材料合成提供独特的化学和物理特性.
开发高效和选择性的黄金开采方法仍然是一个重大挑战.

研究的目的:

使用离子液体单体合成一种新的离子共价有机框架 (ECUT-iCOF-5).
评估ECUT-iCOF-5在黄金开采方面的潜力.
评估合成材料的提取能力,选择性和可回收性.

主要方法:

通过使用离子液体单体的Knoevenagel反应合成ECUT-iCOF-5.
从水溶液中提取黄金的效率的实验评估.
提取能力的特征,对各种离子的选择性,以及可重复使用性.

主要成果:

成功合成了一种罕见的离子共价有机框架,ECUT-iCOF-5.
证明了3260毫克的高黄金提取能力.
在竞争中的离子和离子上对黄金表现出极好的选择性,在至少六个循环中具有良好的可回收性.

结论:

ECUT-iCOF-5是一种高效的黄金开采材料.
单体的离子性质有助于框架的独特特性.
这一框架为贵金属回收技术带来了有前途的进展.

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