Polyethersulfone/Graphene Oxide Ultrafiltration Membranes from Solutions in Ionic Liquid
Name:
polyethersulfonegraphene_oxide_ultrafiltration_membranes_from_solutions_in_ionic_liquid.pdf
Size:
1.069Mb
Format:
PDF
Description:
Main article
Type
ArticleKAUST Department
Biological and Environmental Sciences and Engineering (BESE) DivisionEnvironmental Science and Engineering Program
Date
2017-07-18Online Publication Date
2017-07-18Print Publication Date
2017Permanent link to this record
http://hdl.handle.net/10754/625257
Metadata
Show full item recordAbstract
Novel high flux polyethersulfone (PES) ultrafiltration membranes were fabricated by incorporating different amounts of graphene oxide (GO) sheets to PES as nanofillers. The membranes were prepared from solutions in 50/50 1-ethyl-3-methylimidazolium-diethylphosphate/N,N-dimethyl formamide. It was observed that the water permeance increased from 550 to 800 L m-2h-1bar-1, with incorporation of 1 wt% GO, keeping a molecular weight cut-off (MWCO) of approximately 32-34 kg mol-1. Cross-sectional scanning electron microscopy images of GO/PES membranes showed the formation of ultrathin selective layer unlike pristine membranes. Contact angle measurements confirmed the increase of hydrophilicity, by increasing the GO concentration. The rejection of humic acid and bovine serum albumin was demonstrated. The mechanical properties were improved, compared with the pristine membranes. The performance was just above the trade-off relationship between permeance and separation factor for PES membranes reported in the literature.Citation
Mahalingam DK, Kim D, Nunes SP (2017) Polyethersulfone/Graphene Oxide Ultrafiltration Membranes from Solutions in Ionic Liquid. MRS Advances: 1–7. Available: http://dx.doi.org/10.1557/adv.2017.492.Sponsors
This work was sponsored by King Abdullah University of Science and Technology (KAUST). The authors thank Dr. Mahendra Kumar (KAUST) for his assistance in GO synthesis and Prof. Mainak Majumder for discussions in the early stage of this work.Publisher
Cambridge University Press (CUP)Journal
MRS Advancesae974a485f413a2113503eed53cd6c53
10.1557/adv.2017.492