Enhancement of the antifouling properties and filtration performance of poly(ethersulfone) ultrafiltration membranes by incorporation of nanoporous titania nanoparticles

Low, Ze-Xian, Wang, Zhouyou, Leong, Sookwan, Razmjou, Amir, Dumée, Ludovic F., Zhang, Xiwang and Wang, Huanting 2015, Enhancement of the antifouling properties and filtration performance of poly(ethersulfone) ultrafiltration membranes by incorporation of nanoporous titania nanoparticles, Industrial and engineering chemistry research, vol. 54, no. 44, pp. 11188-11198, doi: 10.1021/acs.iecr.5b03147.

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Title Enhancement of the antifouling properties and filtration performance of poly(ethersulfone) ultrafiltration membranes by incorporation of nanoporous titania nanoparticles
Author(s) Low, Ze-Xian
Wang, Zhouyou
Leong, Sookwan
Razmjou, Amir
Dumée, Ludovic F.ORCID iD for Dumée, Ludovic F. orcid.org/0000-0002-0264-4024
Zhang, Xiwang
Wang, Huanting
Journal name Industrial and engineering chemistry research
Volume number 54
Issue number 44
Start page 11188
End page 11198
Total pages 11
Publisher American Chemical Society
Place of publication Washington, D.C.
Publication date 2015
ISSN 0888-5885
1520-5045
Summary Nanoporous titania nanoparticles (NTNs) were synthesized and used as an additive at a low concentration of 0.1-1 wt % in the fabrication of poly(ethersulfone) (PES) ultrafiltration membranes via non-solvent-induced phase separation. The structure and properties of nanoparticles were characterized using nitrogen sorption, X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The NTNs have a size distribution with a particle size of mainly <100 nm and have a Brunauer, Emmett, and Teller surface area of ∼100 m2 g-1. The modified membranes were fabricated and investigated in terms of their pure water flux, solute rejection, and fouling resistance. The water permeability and molecular weight cutoffs (MWCOs) of membranes were determined under constant-pressure filtration in dead-end mode at 100 kPa. The membrane fouling resistance was characterized under constant flux operation using bovine serum albumin as a model foulant. The membranes were characterized in terms of morphology, porosity, pore size distribution, energy-dispersive X-ray spectroscopy, contact angle goniometry, surface free energy, and viscosity of the dope solution. Overall, the modified membrane showed increased wettability and reduced surface free energy and pore size. The modified UF membrane with 0.5 wt % NTN loading exhibited improved fouling resistance (fouling rate of 0.58 kPa/min compared to a rate of 0.70 kPa/min for the control membrane) with ∼80% water flux recovery. The same membrane showed an ∼20% increase in water flux, an improvement in MWCO, and a narrower pore size distribution.
Language hun
DOI 10.1021/acs.iecr.5b03147
Field of Research 030302 Nanochemistry and Supramolecular Chemistry
09 Engineering
03 Chemical Sciences
Socio Economic Objective 869999 Manufacturing not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, American Chemical Society
Persistent URL http://hdl.handle.net/10536/DRO/DU:30080086

Document type: Journal Article
Collection: Institute for Frontier Materials
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