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

Authors: 
Zhang, R., State Power Investment Company Research Institute
LIU, D., State Power Investment Company Research Institute
Fu, J., State Power Investment Company Research Institute
Ma, N., State Power Investment Company Research Institute
Luo, T., State Power Investment Company Research Institute
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.