Scalable Hollow Fiber Adsorbents for Metal Ion Recovery via Selective In-Pore MOF-808 Growth under Aqueous Conditions.

ABSTRACT: Selective in situ growth of metal-organic frameworks (MOFs) within polymeric supports under mild, aqueous conditions remains a synthetic challenge due to interfacial instability, uncontrolled crystallization, and MOF leaching. Here, this study reports a binding-assisted strategy for the selective in-pore growth of MOF-808 within polyacrylonitrile (PAN)/polyvinyl pyrrolidone (PVP) hollow fibers at 30 °C. Alkaline hydrolysis of PAN introduces anchoring sites for zirconium clusters, while ethanol-assisted solvation promotes MOF crystallization under ambient conditions. The spatial distribution and surface charge of hydrolyzed PVP suppress MOF nucleation on the outer surface, enabling uniform in-pore growth with 34 wt.% loading and > 99% retention after ultrasonication. Post-synthetic function

SUBMITTER: Lee HJ 

PROVIDER: S-EPMC12850194 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature