Polyoxometalate Clusters Confined in Reduced Graphene Oxide Membranes for Effective Ion Sieving and Desalination.

ABSTRACT: Efficient 2D membranes play a critical role in water purification and desalination. However, most 2D membranes, such as graphene oxide (GO) membranes, tend to swell or disintegrate in liquid, making precise ionic sieving a tough challenge. Herein, the fabrication of the polyoxometalate clusters (PW₁₂) intercalated reduced graphene oxide (rGO) membrane (rGO-PW₁₂) is reported through a polyoxometalate-assisted in situ photoreduction strategy. The intercalated PW₁₂ result in the interlayer spacing in the sub-nanometer scale and induce a nanoconfinement effect to repel the ions in various salt solutions. The permeation rate of rGO-PW₁₂ membranes are about two orders of magnitude lower than those through the GO membrane. The confinement of nanochannel

SUBMITTER: Yang Y 

PROVIDER: S-EPMC11422814 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature