Scalable Synthesis of Carbon Nanomembranes from Amorphous Molecular Layers.

ABSTRACT: Nanoporous carbon nanomembranes (CNMs) created by self-assembled monolayers ideally combine a high water flux and precise ion selectivity for molecular separation and water desalination. However, their practical implementation is often challenged by the availability of large epitaxial substrates, limiting the membrane up-scaling. Here, we report a scalable synthesis of CNMs from poly(4-vinylbiphenyl) (PVBP) spin-coated on SiO₂/Si wafers. Electron irradiation of the amorphous PVBP molecular layers induces the formation of a continuous membrane with a thickness of 15 nm and a high density of subnanometer pores, providing a water permeance as high as 530 L m^-2 h^-1 bar^-1, while repelling ions and molecules larger than 1 nm in size. A further introduc

SUBMITTER: Yao Z 

PROVIDER: S-EPMC11571106 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature