(583x) Ceramic Tubular MOF Hybrid Membrane Fabricated Through in situ Layer-By-Layer Self-Assembly for Nanofiltration

Nanofiltration has been playing an important role in water purification, in which the developments of novel membrane
materials and modules are among significant. Herein, a metal-organic framework (MOFs) hybrid membrane, ZIF-8/PSS
was fabricated on a tubular alumina substrate through a layer-by-layer self-assembly technique. ZIF-8 particles in situ
grow into PSS layers to improve their compatibility and dispersion, thereby getting high quality membrane, which was
loaded into a steel tubular module for nano-filtrating dyes from water. Under optimized conditions, it shows outstanding
nanofiltration properties toward methyl blue, with the flux of 210 Lm22 h21 MPa21 and the rejection of 98.6%. Furthermore,
the good pressure resistance ability and running stability of the membrane were revealed, which can be attributed
to use the ceramic substrate and the inherent stability of ZIF-8. This work thus illustrates a simple approach for fabricating
MOFs hybrid membranes on tubular ceramic substrates, having great potential for industrial applications.