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research article

A customized MOF-polymer composite for rapid gold extraction from water matrices

Xue, Tianwei
•
He, Tao
•
Peng, Li
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March 31, 2023
Science Advances

With the fast-growing accumulation of electronic waste and rising demand for rare metals, it is compelling to develop technologies that can promotionally recover targeted metals, like gold, from waste, a process referred to as urban mining. Thus, there is increasing interest in the design of materials to achieve rapid, selective gold capture while maintaining high adsorption capacity, especially in complex aqueous-based matrices. Here, a highly porous metal-organic framework (MOF)-polymer composite, BUT-33-poly(para-phenylenediamine) (PpPD), is assessed for gold extraction from several matrices including river water, seawater, and leaching so-lutions from CPUs. BUT-33-PpPD exhibits a record-breaking extraction rate, with high Au3+ removal efficiency (>99%) within seconds (less than 45 s), a competitive capacity (1600 mg/g), high selectivity, long-term stability, and recycling ability. Furthermore, the high porosity and redox adsorption mechanism were shown to be un-derlying reasons for the material's excellent performance. Given the accumulation of recovered metallic gold nanoparticles inside, the material was also efficiently applied as a catalyst.

  • Details
  • Metrics
Type
research article
DOI
10.1126/sciadv.adg4923
Web of Science ID

WOS:000969620700012

Author(s)
Xue, Tianwei
He, Tao
Peng, Li
Syzgantseva, Olga A.
Li, Ruiqing
Liu, Chengbin
Sun, Daniel T.
Xu, Guangkuo
Qiu, Rongxing
Wang, Yanliang
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Date Issued

2023-03-31

Publisher

AMER ASSOC ADVANCEMENT SCIENCE

Published in
Science Advances
Volume

9

Issue

13

Article Number

eadg4923

Subjects

Multidisciplinary Sciences

•

Science & Technology - Other Topics

•

metal-organic frameworks

•

selective recovery

•

in-situ

•

waste

•

adsorption

•

au(iii)

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

Available on Infoscience
May 22, 2023
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/197769
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