Pore-wall pyridine-N density regulation in quinoline-linked covalent organic frameworks (COFs) markedly enhances gold capture. COF-Q-Pz with the highest pyridine-N density achieves the highest adsorption capacity of 2512.2 mg g -1 and excellent selectivity to gold. It performs effectively in real CPU leachate, highlighting a practical strategy for gold recovery from e-waste.
J. Cao, M. Li, H. Wang, S. Wei, R. Li, J. Xiahou, J. Huang, J. Li and Y. Liu, Chem. Commun., 2026, Accepted Manuscript , DOI: 10.1039/D6CC01607C
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