Ultrahigh water permeance of a reduced graphene oxide nanofiltration membrane for multivalent metal ion rejection

Chemical Communications : Chem Comm
Fangfang DaiLiang Chen

Abstract

We develop a kind of pure rGO membrane using amino-hydrothermal reduction that exhibits an ultrahigh water permeance of 142.5 L m-2 h-1 bar-1 while still maintaining a high rejection rate of 91.6% for multivalent metal ions. The prepared rGO membranes have two types of spacing: larger hydrophilic spacing and smaller hydrophobic spacing, resulting in superior filtration performance. This provides a new avenue for multivalent metal ion separation using pure rGO membranes.

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Methods Mentioned

BETA
X-ray
scanning electron microscopy

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