A freestanding, hierarchically porous poly(imine dioxime) membrane enabling selective gold recovery from e-waste with unprecedented capacity,EcoMat

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A freestanding, hierarchically porous poly(imine dioxime) membrane enabling selective gold recovery from e-waste with unprecedented capacity
EcoMat ( IF 10.7 ) Pub Date : 2022-06-29 , DOI: 10.1002/eom2.12248
Huaimeng Li _{1,

2} , Mengxiang Ye _{1,

2} , Zhen Fu ₁ , Haimin Zhang _{1,

2} , Guozhong Wang _{1,

2} , Yunxia Zhang _{1,

2}

Affiliation

The ever-growing depletion of precious metals in modern electronic industry necessitates unremitting exploitation of novel materials for gold recovery from e-waste. Herein, a freestanding poly(imine dioxime) (PIDO) membrane has been successfully fabricated for highly efficient recovery of gold from e-waste. The consummate integration of abundant binding sites and hierarchically porous architecture renders the resulting PIDO membrane with a record-breaking uptake capacity (9250 mg g⁻¹) toward gold, fast adsorption equilibrium time, as well as satisfactory regeneration and reusability. Furthermore, PIDO membrane is also well competent for selective gold recovery from waste central processing unit leachate with remarkable efficiency (>99%). Considering high recovery efficiency, outstanding selectivity, and simple/scalable production process, the proposed PIDO membrane will hold huge prospect in the sustainable recovery of gold from e-waste.

中文翻译：

一种独立的分级多孔聚（亚胺二肟）膜，能够以前所未有的能力从电子垃圾中选择性回收金

现代电子工业中贵金属的日益枯竭需要不懈地开发用于从电子垃圾中回收黄金的新型材料。在此，成功地制造了一种独立的聚（亚胺二肟）（PIDO）膜，用于从电子垃圾中高效回收金。丰富的结合位点和分层多孔结构的完美结合使所得 PIDO 膜具有破纪录的吸收能力（9250 mg g ^-1) 对金，快速吸附平衡时间，以及令人满意的再生和可重复使用性。此外，PIDO 膜还能够以显着的效率（>99%）从废弃的中央处理单元渗滤液中选择性回收金。考虑到高回收效率、突出的选择性和简单/可扩展的生产过程，所提出的 PIDO 膜将在从电子垃圾中可持续回收黄金方面具有巨大的前景。

更新日期：2022-06-29

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