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

被引：14
作者：
Li, Huaimeng [1 ,2 ]
Ye, Mengxiang [1 ,2 ]
Fu, Zhen [1 ]
Zhang, Haimin [1 ,2 ]
Wang, Guozhong [1 ,2 ]
Zhang, Yunxia [1 ,2 ]
机构：
[1] Chinese Acad Sci, Hefei Inst Phys Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
[2] Univ Sci & Technol China, Hefei, Peoples R China
来源：
ECOMAT | 2022年 / 4卷 / 06期
基金：
中国国家自然科学基金;
关键词：
gold; poly(imine dioxime) membrane; recovery; regeneration; selective; URANIUM EXTRACTION; EFFICIENT EXTRACTION; PRECIOUS METALS; CIRCUIT BOARDS; ADSORPTION; AMIDOXIME; SEAWATER; AU(III); WATER; ADSORBENTS;
D O I：
10.1002/eom2.12248
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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.
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页数：17
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