In this section
@article{Li:2015:10.1038/srep15799,
author = {Li, K and Chong, JY and Aba, NFD and Wang, B and Mattevi, C},
doi = {10.1038/srep15799},
journal = {Scientific Reports},
title = {UV-enhanced sacrificial layer stabilised graphene oxide hollow fibre membranes for nanofiltration},
url = {http://dx.doi.org/10.1038/srep15799},
volume = {5},
year = {2015}
}
TY - JOUR
AB - Graphene oxide (GO) membranes have demonstrated great potential in gas separation and liquid filtration. For upscale applications, GO membranes in a hollow fibre geometry are of particular interest due to the high-efficiency and easy-assembly features at module level. However, GO membranes were found unstable in dry state on ceramic hollow fibre substrates, mainly due to the drying-related shrinkage, which has limited the applications and post-treatments of GO membranes. We demonstrate here that GO hollow fibre membranes can be stabilised by using a porous poly(methyl methacrylate) (PMMA) sacrificial layer, which creates a space between the hollow fibre substrate and the GO membrane thus allowing stress-free shrinkage. Defect-free GO hollow fibre membrane was successfully determined and the membrane was stable in a long term (1200 hours) gas-tight stability test. Post-treatment of the GO membranes with UV light was also successfully accomplished in air, which induced the creation of controlled microstructural defects in the membrane and increased the roughness factor of the membrane surface. The permeability of the UV-treated GO membranes was greatly enhanced from 0.07 to 2.8 L m-2 h-1 bar-1 for water, and 0.14 to 7.5 L m-2 h-1 bar-1 for acetone, with an unchanged low molecular weight cut off (~250 Da).
AU - Li,K
AU - Chong,JY
AU - Aba,NFD
AU - Wang,B
AU - Mattevi,C
DO - 10.1038/srep15799
PY - 2015///
SN - 2045-2322
TI - UV-enhanced sacrificial layer stabilised graphene oxide hollow fibre membranes for nanofiltration
T2 - Scientific Reports
UR - http://dx.doi.org/10.1038/srep15799
UR - http://hdl.handle.net/10044/1/27312
VL - 5
ER -
Lecturer and Royal Society University Research Fellow
Department of Materials
Imperial College London
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