Chemistry

Porous organic polycarbene nanotrap for efficient and selective gold stripping from electronic waste

X. Li, Y. Wang, et al.

Discover the groundbreaking research conducted by Xinghao Li, Yong-Lei Wang, and their team on a novel porous organic polycarbene adsorbent, achieving an astounding gold recovery capacity of 2.09 g/g with 99.8% efficiency from electronic waste solutions. This work paves the way for more sustainable precious metal recovery methods.

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Abstract

This paper reports the design and preparation of a poly(ionic liquid)-derived porous organic polycarbene adsorbent for efficient gold capture. The adsorbent, utilizing carbene sites as a "nanotrap," exhibits an ultrahigh gold recovery capacity of 2.09 g/g and a 99.8% recovery efficiency from electronic waste solutions. X-ray photoelectron spectroscopy and nuclear magnetic resonance spectroscopy reveal the formation of robust metal-carbene bonds and the reduction of gold ions into nanoparticles. Density functional theory calculations support the energetically favorable multinuclear Au binding. Life cycle assessment and cost analysis suggest potential for industrial-scale production. This research highlights porous organic polycarbenes as a promising material for precious metal recovery.

Publisher

Nature Communications

Published On

Jan 17, 2023

Authors

Xinghao Li, Yong-Lei Wang, Jin Wen, Linlin Zheng, Cheng Qian, Zhonghua Cheng, Hongyu Zuo, Mingqing Yu, Jiayin Yuan, Rong Li, Weiyi Zhang, Yaozu Liao

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